http://git-wip-us.apache.org/repos/asf/hbase-site/blob/2e694a8e/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html index bb24e1f..de5c849 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html @@ -35,1192 +35,1193 @@ <span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a> <span class="sourceLineNo">028</span>import java.util.Map;<a name="line.28"></a> <span class="sourceLineNo">029</span>import java.util.Set;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.concurrent.locks.ReadWriteLock;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.util.concurrent.locks.ReentrantReadWriteLock;<a name="line.32"></a> -<span class="sourceLineNo">033</span><a name="line.33"></a> -<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configuration;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.hadoop.fs.FileStatus;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.hadoop.fs.FileSystem;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import org.apache.hadoop.fs.Path;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HConstants;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.Stoppable;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.TableName;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.errorhandling.ForeignException;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.executor.ExecutorService;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.ipc.RpcServer;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.MasterCoprocessorHost;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.MasterFileSystem;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.MetricsMaster;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.SnapshotSentinel;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.cleaner.HFileCleaner;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.cleaner.HFileLinkCleaner;<a name="line.56"></a> -<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.procedure.CloneSnapshotProcedure;<a name="line.57"></a> -<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.58"></a> -<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.procedure.RestoreSnapshotProcedure;<a name="line.59"></a> -<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.procedure.MasterProcedureManager;<a name="line.60"></a> -<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.procedure.Procedure;<a name="line.61"></a> -<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.procedure.ProcedureCoordinator;<a name="line.62"></a> -<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.procedure.ProcedureCoordinatorRpcs;<a name="line.63"></a> -<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.procedure.ZKProcedureCoordinator;<a name="line.64"></a> -<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;<a name="line.65"></a> -<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.security.AccessDeniedException;<a name="line.66"></a> -<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.security.User;<a name="line.67"></a> -<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.security.access.AccessChecker;<a name="line.68"></a> -<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;<a name="line.69"></a> -<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.snapshot.HBaseSnapshotException;<a name="line.70"></a> -<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.snapshot.RestoreSnapshotException;<a name="line.71"></a> -<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.snapshot.SnapshotCreationException;<a name="line.72"></a> -<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;<a name="line.73"></a> -<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.snapshot.SnapshotDoesNotExistException;<a name="line.74"></a> -<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.snapshot.SnapshotExistsException;<a name="line.75"></a> -<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.snapshot.SnapshotManifest;<a name="line.76"></a> -<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.snapshot.SnapshotReferenceUtil;<a name="line.77"></a> -<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.snapshot.TablePartiallyOpenException;<a name="line.78"></a> -<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.snapshot.UnknownSnapshotException;<a name="line.79"></a> -<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.80"></a> -<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.81"></a> -<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.util.NonceKey;<a name="line.82"></a> -<span class="sourceLineNo">083</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.83"></a> -<span class="sourceLineNo">084</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.84"></a> -<span class="sourceLineNo">085</span>import org.apache.zookeeper.KeeperException;<a name="line.85"></a> -<span class="sourceLineNo">086</span>import org.slf4j.Logger;<a name="line.86"></a> -<span class="sourceLineNo">087</span>import org.slf4j.LoggerFactory;<a name="line.87"></a> -<span class="sourceLineNo">088</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.88"></a> -<span class="sourceLineNo">089</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.NameStringPair;<a name="line.89"></a> -<span class="sourceLineNo">090</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.ProcedureDescription;<a name="line.90"></a> -<span class="sourceLineNo">091</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.91"></a> -<span class="sourceLineNo">092</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription.Type;<a name="line.92"></a> -<span class="sourceLineNo">093</span><a name="line.93"></a> -<span class="sourceLineNo">094</span>/**<a name="line.94"></a> -<span class="sourceLineNo">095</span> * This class manages the procedure of taking and restoring snapshots. There is only one<a name="line.95"></a> -<span class="sourceLineNo">096</span> * SnapshotManager for the master.<a name="line.96"></a> -<span class="sourceLineNo">097</span> * <p><a name="line.97"></a> -<span class="sourceLineNo">098</span> * The class provides methods for monitoring in-progress snapshot actions.<a name="line.98"></a> -<span class="sourceLineNo">099</span> * <p><a name="line.99"></a> -<span class="sourceLineNo">100</span> * Note: Currently there can only be one snapshot being taken at a time over the cluster. This is a<a name="line.100"></a> -<span class="sourceLineNo">101</span> * simplification in the current implementation.<a name="line.101"></a> -<span class="sourceLineNo">102</span> */<a name="line.102"></a> -<span class="sourceLineNo">103</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)<a name="line.103"></a> -<span class="sourceLineNo">104</span>@InterfaceStability.Unstable<a name="line.104"></a> -<span class="sourceLineNo">105</span>public class SnapshotManager extends MasterProcedureManager implements Stoppable {<a name="line.105"></a> -<span class="sourceLineNo">106</span> private static final Logger LOG = LoggerFactory.getLogger(SnapshotManager.class);<a name="line.106"></a> -<span class="sourceLineNo">107</span><a name="line.107"></a> -<span class="sourceLineNo">108</span> /** By default, check to see if the snapshot is complete every WAKE MILLIS (ms) */<a name="line.108"></a> -<span class="sourceLineNo">109</span> private static final int SNAPSHOT_WAKE_MILLIS_DEFAULT = 500;<a name="line.109"></a> -<span class="sourceLineNo">110</span><a name="line.110"></a> -<span class="sourceLineNo">111</span> /**<a name="line.111"></a> -<span class="sourceLineNo">112</span> * Wait time before removing a finished sentinel from the in-progress map<a name="line.112"></a> -<span class="sourceLineNo">113</span> *<a name="line.113"></a> -<span class="sourceLineNo">114</span> * NOTE: This is used as a safety auto cleanup.<a name="line.114"></a> -<span class="sourceLineNo">115</span> * The snapshot and restore handlers map entries are removed when a user asks if a snapshot or<a name="line.115"></a> -<span class="sourceLineNo">116</span> * restore is completed. This operation is part of the HBaseAdmin snapshot/restore API flow.<a name="line.116"></a> -<span class="sourceLineNo">117</span> * In case something fails on the client side and the snapshot/restore state is not reclaimed<a name="line.117"></a> -<span class="sourceLineNo">118</span> * after a default timeout, the entry is removed from the in-progress map.<a name="line.118"></a> -<span class="sourceLineNo">119</span> * At this point, if the user asks for the snapshot/restore status, the result will be<a name="line.119"></a> -<span class="sourceLineNo">120</span> * snapshot done if exists or failed if it doesn't exists.<a name="line.120"></a> -<span class="sourceLineNo">121</span> */<a name="line.121"></a> -<span class="sourceLineNo">122</span> private static final int SNAPSHOT_SENTINELS_CLEANUP_TIMEOUT = 60 * 1000;<a name="line.122"></a> -<span class="sourceLineNo">123</span><a name="line.123"></a> -<span class="sourceLineNo">124</span> /** Enable or disable snapshot support */<a name="line.124"></a> -<span class="sourceLineNo">125</span> public static final String HBASE_SNAPSHOT_ENABLED = "hbase.snapshot.enabled";<a name="line.125"></a> -<span class="sourceLineNo">126</span><a name="line.126"></a> -<span class="sourceLineNo">127</span> /**<a name="line.127"></a> -<span class="sourceLineNo">128</span> * Conf key for # of ms elapsed between checks for snapshot errors while waiting for<a name="line.128"></a> -<span class="sourceLineNo">129</span> * completion.<a name="line.129"></a> -<span class="sourceLineNo">130</span> */<a name="line.130"></a> -<span class="sourceLineNo">131</span> private static final String SNAPSHOT_WAKE_MILLIS_KEY = "hbase.snapshot.master.wakeMillis";<a name="line.131"></a> -<span class="sourceLineNo">132</span><a name="line.132"></a> -<span class="sourceLineNo">133</span> /** Name of the operation to use in the controller */<a name="line.133"></a> -<span class="sourceLineNo">134</span> public static final String ONLINE_SNAPSHOT_CONTROLLER_DESCRIPTION = "online-snapshot";<a name="line.134"></a> -<span class="sourceLineNo">135</span><a name="line.135"></a> -<span class="sourceLineNo">136</span> /** Conf key for # of threads used by the SnapshotManager thread pool */<a name="line.136"></a> -<span class="sourceLineNo">137</span> private static final String SNAPSHOT_POOL_THREADS_KEY = "hbase.snapshot.master.threads";<a name="line.137"></a> -<span class="sourceLineNo">138</span><a name="line.138"></a> -<span class="sourceLineNo">139</span> /** number of current operations running on the master */<a name="line.139"></a> -<span class="sourceLineNo">140</span> private static final int SNAPSHOT_POOL_THREADS_DEFAULT = 1;<a name="line.140"></a> -<span class="sourceLineNo">141</span><a name="line.141"></a> -<span class="sourceLineNo">142</span> private boolean stopped;<a name="line.142"></a> -<span class="sourceLineNo">143</span> private MasterServices master; // Needed by TableEventHandlers<a name="line.143"></a> -<span class="sourceLineNo">144</span> private ProcedureCoordinator coordinator;<a name="line.144"></a> -<span class="sourceLineNo">145</span><a name="line.145"></a> -<span class="sourceLineNo">146</span> // Is snapshot feature enabled?<a name="line.146"></a> -<span class="sourceLineNo">147</span> private boolean isSnapshotSupported = false;<a name="line.147"></a> -<span class="sourceLineNo">148</span><a name="line.148"></a> -<span class="sourceLineNo">149</span> // Snapshot handlers map, with table name as key.<a name="line.149"></a> -<span class="sourceLineNo">150</span> // The map is always accessed and modified under the object lock using synchronized.<a name="line.150"></a> -<span class="sourceLineNo">151</span> // snapshotTable() will insert an Handler in the table.<a name="line.151"></a> -<span class="sourceLineNo">152</span> // isSnapshotDone() will remove the handler requested if the operation is finished.<a name="line.152"></a> -<span class="sourceLineNo">153</span> private Map<TableName, SnapshotSentinel> snapshotHandlers = new HashMap<>();<a name="line.153"></a> -<span class="sourceLineNo">154</span><a name="line.154"></a> -<span class="sourceLineNo">155</span> // Restore map, with table name as key, procedure ID as value.<a name="line.155"></a> -<span class="sourceLineNo">156</span> // The map is always accessed and modified under the object lock using synchronized.<a name="line.156"></a> -<span class="sourceLineNo">157</span> // restoreSnapshot()/cloneSnapshot() will insert a procedure ID in the map.<a name="line.157"></a> -<span class="sourceLineNo">158</span> //<a name="line.158"></a> -<span class="sourceLineNo">159</span> // TODO: just as the Apache HBase 1.x implementation, this map would not survive master<a name="line.159"></a> -<span class="sourceLineNo">160</span> // restart/failover. This is just a stopgap implementation until implementation of taking<a name="line.160"></a> -<span class="sourceLineNo">161</span> // snapshot using Procedure-V2.<a name="line.161"></a> -<span class="sourceLineNo">162</span> private Map<TableName, Long> restoreTableToProcIdMap = new HashMap<>();<a name="line.162"></a> -<span class="sourceLineNo">163</span><a name="line.163"></a> -<span class="sourceLineNo">164</span> private Path rootDir;<a name="line.164"></a> -<span class="sourceLineNo">165</span> private ExecutorService executorService;<a name="line.165"></a> -<span class="sourceLineNo">166</span><a name="line.166"></a> -<span class="sourceLineNo">167</span> /**<a name="line.167"></a> -<span class="sourceLineNo">168</span> * Read write lock between taking snapshot and snapshot HFile cleaner. The cleaner should skip to<a name="line.168"></a> -<span class="sourceLineNo">169</span> * check the HFiles if any snapshot is in progress, otherwise it may clean a HFile which would<a name="line.169"></a> -<span class="sourceLineNo">170</span> * belongs to the newly creating snapshot. So we should grab the write lock first when cleaner<a name="line.170"></a> -<span class="sourceLineNo">171</span> * start to work. (See HBASE-21387)<a name="line.171"></a> -<span class="sourceLineNo">172</span> */<a name="line.172"></a> -<span class="sourceLineNo">173</span> private ReentrantReadWriteLock takingSnapshotLock = new ReentrantReadWriteLock(true);<a name="line.173"></a> -<span class="sourceLineNo">174</span><a name="line.174"></a> -<span class="sourceLineNo">175</span> public SnapshotManager() {}<a name="line.175"></a> -<span class="sourceLineNo">176</span><a name="line.176"></a> -<span class="sourceLineNo">177</span> /**<a name="line.177"></a> -<span class="sourceLineNo">178</span> * Fully specify all necessary components of a snapshot manager. Exposed for testing.<a name="line.178"></a> -<span class="sourceLineNo">179</span> * @param master services for the master where the manager is running<a name="line.179"></a> -<span class="sourceLineNo">180</span> * @param coordinator procedure coordinator instance. exposed for testing.<a name="line.180"></a> -<span class="sourceLineNo">181</span> * @param pool HBase ExecutorServcie instance, exposed for testing.<a name="line.181"></a> -<span class="sourceLineNo">182</span> */<a name="line.182"></a> -<span class="sourceLineNo">183</span> public SnapshotManager(final MasterServices master, final MetricsMaster metricsMaster,<a name="line.183"></a> -<span class="sourceLineNo">184</span> ProcedureCoordinator coordinator, ExecutorService pool)<a name="line.184"></a> -<span class="sourceLineNo">185</span> throws IOException, UnsupportedOperationException {<a name="line.185"></a> -<span class="sourceLineNo">186</span> this.master = master;<a name="line.186"></a> -<span class="sourceLineNo">187</span><a name="line.187"></a> -<span class="sourceLineNo">188</span> this.rootDir = master.getMasterFileSystem().getRootDir();<a name="line.188"></a> -<span class="sourceLineNo">189</span> checkSnapshotSupport(master.getConfiguration(), master.getMasterFileSystem());<a name="line.189"></a> -<span class="sourceLineNo">190</span><a name="line.190"></a> -<span class="sourceLineNo">191</span> this.coordinator = coordinator;<a name="line.191"></a> -<span class="sourceLineNo">192</span> this.executorService = pool;<a name="line.192"></a> -<span class="sourceLineNo">193</span> resetTempDir();<a name="line.193"></a> -<span class="sourceLineNo">194</span> }<a name="line.194"></a> -<span class="sourceLineNo">195</span><a name="line.195"></a> -<span class="sourceLineNo">196</span> /**<a name="line.196"></a> -<span class="sourceLineNo">197</span> * Gets the list of all completed snapshots.<a name="line.197"></a> -<span class="sourceLineNo">198</span> * @return list of SnapshotDescriptions<a name="line.198"></a> -<span class="sourceLineNo">199</span> * @throws IOException File system exception<a name="line.199"></a> -<span class="sourceLineNo">200</span> */<a name="line.200"></a> -<span class="sourceLineNo">201</span> public List<SnapshotDescription> getCompletedSnapshots() throws IOException {<a name="line.201"></a> -<span class="sourceLineNo">202</span> return getCompletedSnapshots(SnapshotDescriptionUtils.getSnapshotsDir(rootDir), true);<a name="line.202"></a> -<span class="sourceLineNo">203</span> }<a name="line.203"></a> -<span class="sourceLineNo">204</span><a name="line.204"></a> -<span class="sourceLineNo">205</span> /**<a name="line.205"></a> -<span class="sourceLineNo">206</span> * Gets the list of all completed snapshots.<a name="line.206"></a> -<span class="sourceLineNo">207</span> * @param snapshotDir snapshot directory<a name="line.207"></a> -<span class="sourceLineNo">208</span> * @param withCpCall Whether to call CP hooks<a name="line.208"></a> -<span class="sourceLineNo">209</span> * @return list of SnapshotDescriptions<a name="line.209"></a> -<span class="sourceLineNo">210</span> * @throws IOException File system exception<a name="line.210"></a> -<span class="sourceLineNo">211</span> */<a name="line.211"></a> -<span class="sourceLineNo">212</span> private List<SnapshotDescription> getCompletedSnapshots(Path snapshotDir, boolean withCpCall)<a name="line.212"></a> -<span class="sourceLineNo">213</span> throws IOException {<a name="line.213"></a> -<span class="sourceLineNo">214</span> List<SnapshotDescription> snapshotDescs = new ArrayList<>();<a name="line.214"></a> -<span class="sourceLineNo">215</span> // first create the snapshot root path and check to see if it exists<a name="line.215"></a> -<span class="sourceLineNo">216</span> FileSystem fs = master.getMasterFileSystem().getFileSystem();<a name="line.216"></a> -<span class="sourceLineNo">217</span> if (snapshotDir == null) snapshotDir = SnapshotDescriptionUtils.getSnapshotsDir(rootDir);<a name="line.217"></a> -<span class="sourceLineNo">218</span><a name="line.218"></a> -<span class="sourceLineNo">219</span> // if there are no snapshots, return an empty list<a name="line.219"></a> -<span class="sourceLineNo">220</span> if (!fs.exists(snapshotDir)) {<a name="line.220"></a> -<span class="sourceLineNo">221</span> return snapshotDescs;<a name="line.221"></a> -<span class="sourceLineNo">222</span> }<a name="line.222"></a> -<span class="sourceLineNo">223</span><a name="line.223"></a> -<span class="sourceLineNo">224</span> // ignore all the snapshots in progress<a name="line.224"></a> -<span class="sourceLineNo">225</span> FileStatus[] snapshots = fs.listStatus(snapshotDir,<a name="line.225"></a> -<span class="sourceLineNo">226</span> new SnapshotDescriptionUtils.CompletedSnaphotDirectoriesFilter(fs));<a name="line.226"></a> -<span class="sourceLineNo">227</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.227"></a> -<span class="sourceLineNo">228</span> withCpCall = withCpCall && cpHost != null;<a name="line.228"></a> -<span class="sourceLineNo">229</span> // loop through all the completed snapshots<a name="line.229"></a> -<span class="sourceLineNo">230</span> for (FileStatus snapshot : snapshots) {<a name="line.230"></a> -<span class="sourceLineNo">231</span> Path info = new Path(snapshot.getPath(), SnapshotDescriptionUtils.SNAPSHOTINFO_FILE);<a name="line.231"></a> -<span class="sourceLineNo">232</span> // if the snapshot is bad<a name="line.232"></a> -<span class="sourceLineNo">233</span> if (!fs.exists(info)) {<a name="line.233"></a> -<span class="sourceLineNo">234</span> LOG.error("Snapshot information for " + snapshot.getPath() + " doesn't exist");<a name="line.234"></a> -<span class="sourceLineNo">235</span> continue;<a name="line.235"></a> -<span class="sourceLineNo">236</span> }<a name="line.236"></a> -<span class="sourceLineNo">237</span> FSDataInputStream in = null;<a name="line.237"></a> -<span class="sourceLineNo">238</span> try {<a name="line.238"></a> -<span class="sourceLineNo">239</span> in = fs.open(info);<a name="line.239"></a> -<span class="sourceLineNo">240</span> SnapshotDescription desc = SnapshotDescription.parseFrom(in);<a name="line.240"></a> -<span class="sourceLineNo">241</span> org.apache.hadoop.hbase.client.SnapshotDescription descPOJO = (withCpCall)<a name="line.241"></a> -<span class="sourceLineNo">242</span> ? ProtobufUtil.createSnapshotDesc(desc) : null;<a name="line.242"></a> -<span class="sourceLineNo">243</span> if (withCpCall) {<a name="line.243"></a> -<span class="sourceLineNo">244</span> try {<a name="line.244"></a> -<span class="sourceLineNo">245</span> cpHost.preListSnapshot(descPOJO);<a name="line.245"></a> -<span class="sourceLineNo">246</span> } catch (AccessDeniedException e) {<a name="line.246"></a> -<span class="sourceLineNo">247</span> LOG.warn("Current user does not have access to " + desc.getName() + " snapshot. "<a name="line.247"></a> -<span class="sourceLineNo">248</span> + "Either you should be owner of this snapshot or admin user.");<a name="line.248"></a> -<span class="sourceLineNo">249</span> // Skip this and try for next snapshot<a name="line.249"></a> -<span class="sourceLineNo">250</span> continue;<a name="line.250"></a> -<span class="sourceLineNo">251</span> }<a name="line.251"></a> -<span class="sourceLineNo">252</span> }<a name="line.252"></a> -<span class="sourceLineNo">253</span> snapshotDescs.add(desc);<a name="line.253"></a> -<span class="sourceLineNo">254</span><a name="line.254"></a> -<span class="sourceLineNo">255</span> // call coproc post hook<a name="line.255"></a> -<span class="sourceLineNo">256</span> if (withCpCall) {<a name="line.256"></a> -<span class="sourceLineNo">257</span> cpHost.postListSnapshot(descPOJO);<a name="line.257"></a> -<span class="sourceLineNo">258</span> }<a name="line.258"></a> -<span class="sourceLineNo">259</span> } catch (IOException e) {<a name="line.259"></a> -<span class="sourceLineNo">260</span> LOG.warn("Found a corrupted snapshot " + snapshot.getPath(), e);<a name="line.260"></a> -<span class="sourceLineNo">261</span> } finally {<a name="line.261"></a> -<span class="sourceLineNo">262</span> if (in != null) {<a name="line.262"></a> -<span class="sourceLineNo">263</span> in.close();<a name="line.263"></a> -<span class="sourceLineNo">264</span> }<a name="line.264"></a> -<span class="sourceLineNo">265</span> }<a name="line.265"></a> -<span class="sourceLineNo">266</span> }<a name="line.266"></a> -<span class="sourceLineNo">267</span> return snapshotDescs;<a name="line.267"></a> -<span class="sourceLineNo">268</span> }<a name="line.268"></a> -<span class="sourceLineNo">269</span><a name="line.269"></a> -<span class="sourceLineNo">270</span> /**<a name="line.270"></a> -<span class="sourceLineNo">271</span> * Cleans up any snapshots in the snapshot/.tmp directory that were left from failed<a name="line.271"></a> -<span class="sourceLineNo">272</span> * snapshot attempts.<a name="line.272"></a> -<span class="sourceLineNo">273</span> *<a name="line.273"></a> -<span class="sourceLineNo">274</span> * @throws IOException if we can't reach the filesystem<a name="line.274"></a> -<span class="sourceLineNo">275</span> */<a name="line.275"></a> -<span class="sourceLineNo">276</span> void resetTempDir() throws IOException {<a name="line.276"></a> -<span class="sourceLineNo">277</span> // cleanup any existing snapshots.<a name="line.277"></a> -<span class="sourceLineNo">278</span> Path tmpdir = SnapshotDescriptionUtils.getWorkingSnapshotDir(rootDir,<a name="line.278"></a> -<span class="sourceLineNo">279</span> master.getConfiguration());<a name="line.279"></a> -<span class="sourceLineNo">280</span> FileSystem tmpFs = tmpdir.getFileSystem(master.getConfiguration());<a name="line.280"></a> -<span class="sourceLineNo">281</span> if (!tmpFs.delete(tmpdir, true)) {<a name="line.281"></a> -<span class="sourceLineNo">282</span> LOG.warn("Couldn't delete working snapshot directory: " + tmpdir);<a name="line.282"></a> -<span class="sourceLineNo">283</span> }<a name="line.283"></a> -<span class="sourceLineNo">284</span> }<a name="line.284"></a> -<span class="sourceLineNo">285</span><a name="line.285"></a> -<span class="sourceLineNo">286</span> /**<a name="line.286"></a> -<span class="sourceLineNo">287</span> * Delete the specified snapshot<a name="line.287"></a> -<span class="sourceLineNo">288</span> * @param snapshot<a name="line.288"></a> -<span class="sourceLineNo">289</span> * @throws SnapshotDoesNotExistException If the specified snapshot does not exist.<a name="line.289"></a> -<span class="sourceLineNo">290</span> * @throws IOException For filesystem IOExceptions<a name="line.290"></a> -<span class="sourceLineNo">291</span> */<a name="line.291"></a> -<span class="sourceLineNo">292</span> public void deleteSnapshot(SnapshotDescription snapshot) throws SnapshotDoesNotExistException, IOException {<a name="line.292"></a> -<span class="sourceLineNo">293</span> // check to see if it is completed<a name="line.293"></a> -<span class="sourceLineNo">294</span> if (!isSnapshotCompleted(snapshot)) {<a name="line.294"></a> -<span class="sourceLineNo">295</span> throw new SnapshotDoesNotExistException(ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.295"></a> -<span class="sourceLineNo">296</span> }<a name="line.296"></a> -<span class="sourceLineNo">297</span><a name="line.297"></a> -<span class="sourceLineNo">298</span> String snapshotName = snapshot.getName();<a name="line.298"></a> -<span class="sourceLineNo">299</span> // first create the snapshot description and check to see if it exists<a name="line.299"></a> -<span class="sourceLineNo">300</span> FileSystem fs = master.getMasterFileSystem().getFileSystem();<a name="line.300"></a> -<span class="sourceLineNo">301</span> Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotName, rootDir);<a name="line.301"></a> -<span class="sourceLineNo">302</span> // Get snapshot info from file system. The one passed as parameter is a "fake" snapshotInfo with<a name="line.302"></a> -<span class="sourceLineNo">303</span> // just the "name" and it does not contains the "real" snapshot information<a name="line.303"></a> -<span class="sourceLineNo">304</span> snapshot = SnapshotDescriptionUtils.readSnapshotInfo(fs, snapshotDir);<a name="line.304"></a> -<span class="sourceLineNo">305</span><a name="line.305"></a> -<span class="sourceLineNo">306</span> // call coproc pre hook<a name="line.306"></a> -<span class="sourceLineNo">307</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.307"></a> -<span class="sourceLineNo">308</span> org.apache.hadoop.hbase.client.SnapshotDescription snapshotPOJO = null;<a name="line.308"></a> -<span class="sourceLineNo">309</span> if (cpHost != null) {<a name="line.309"></a> -<span class="sourceLineNo">310</span> snapshotPOJO = ProtobufUtil.createSnapshotDesc(snapshot);<a name="line.310"></a> -<span class="sourceLineNo">311</span> cpHost.preDeleteSnapshot(snapshotPOJO);<a name="line.311"></a> -<span class="sourceLineNo">312</span> }<a name="line.312"></a> -<span class="sourceLineNo">313</span><a name="line.313"></a> -<span class="sourceLineNo">314</span> LOG.debug("Deleting snapshot: " + snapshotName);<a name="line.314"></a> -<span class="sourceLineNo">315</span> // delete the existing snapshot<a name="line.315"></a> -<span class="sourceLineNo">316</span> if (!fs.delete(snapshotDir, true)) {<a name="line.316"></a> -<span class="sourceLineNo">317</span> throw new HBaseSnapshotException("Failed to delete snapshot directory: " + snapshotDir);<a name="line.317"></a> -<span class="sourceLineNo">318</span> }<a name="line.318"></a> -<span class="sourceLineNo">319</span><a name="line.319"></a> -<span class="sourceLineNo">320</span> // call coproc post hook<a name="line.320"></a> -<span class="sourceLineNo">321</span> if (cpHost != null) {<a name="line.321"></a> -<span class="sourceLineNo">322</span> cpHost.postDeleteSnapshot(snapshotPOJO);<a name="line.322"></a> -<span class="sourceLineNo">323</span> }<a name="line.323"></a> -<span class="sourceLineNo">324</span><a name="line.324"></a> -<span class="sourceLineNo">325</span> }<a name="line.325"></a> -<span class="sourceLineNo">326</span><a name="line.326"></a> -<span class="sourceLineNo">327</span> /**<a name="line.327"></a> -<span class="sourceLineNo">328</span> * Check if the specified snapshot is done<a name="line.328"></a> -<span class="sourceLineNo">329</span> *<a name="line.329"></a> -<span class="sourceLineNo">330</span> * @param expected<a name="line.330"></a> -<span class="sourceLineNo">331</span> * @return true if snapshot is ready to be restored, false if it is still being taken.<a name="line.331"></a> -<span class="sourceLineNo">332</span> * @throws IOException IOException if error from HDFS or RPC<a name="line.332"></a> -<span class="sourceLineNo">333</span> * @throws UnknownSnapshotException if snapshot is invalid or does not exist.<a name="line.333"></a> -<span class="sourceLineNo">334</span> */<a name="line.334"></a> -<span class="sourceLineNo">335</span> public boolean isSnapshotDone(SnapshotDescription expected) throws IOException {<a name="line.335"></a> -<span class="sourceLineNo">336</span> // check the request to make sure it has a snapshot<a name="line.336"></a> -<span class="sourceLineNo">337</span> if (expected == null) {<a name="line.337"></a> -<span class="sourceLineNo">338</span> throw new UnknownSnapshotException(<a name="line.338"></a> -<span class="sourceLineNo">339</span> "No snapshot name passed in request, can't figure out which snapshot you want to check.");<a name="line.339"></a> -<span class="sourceLineNo">340</span> }<a name="line.340"></a> -<span class="sourceLineNo">341</span><a name="line.341"></a> -<span class="sourceLineNo">342</span> String ssString = ClientSnapshotDescriptionUtils.toString(expected);<a name="line.342"></a> -<span class="sourceLineNo">343</span><a name="line.343"></a> -<span class="sourceLineNo">344</span> // check to see if the sentinel exists,<a name="line.344"></a> -<span class="sourceLineNo">345</span> // and if the task is complete removes it from the in-progress snapshots map.<a name="line.345"></a> -<span class="sourceLineNo">346</span> SnapshotSentinel handler = removeSentinelIfFinished(this.snapshotHandlers, expected);<a name="line.346"></a> -<span class="sourceLineNo">347</span><a name="line.347"></a> -<span class="sourceLineNo">348</span> // stop tracking "abandoned" handlers<a name="line.348"></a> -<span class="sourceLineNo">349</span> cleanupSentinels();<a name="line.349"></a> -<span class="sourceLineNo">350</span><a name="line.350"></a> -<span class="sourceLineNo">351</span> if (handler == null) {<a name="line.351"></a> -<span class="sourceLineNo">352</span> // If there's no handler in the in-progress map, it means one of the following:<a name="line.352"></a> -<span class="sourceLineNo">353</span> // - someone has already requested the snapshot state<a name="line.353"></a> -<span class="sourceLineNo">354</span> // - the requested snapshot was completed long time ago (cleanupSentinels() timeout)<a name="line.354"></a> -<span class="sourceLineNo">355</span> // - the snapshot was never requested<a name="line.355"></a> -<span class="sourceLineNo">356</span> // In those cases returns to the user the "done state" if the snapshots exists on disk,<a name="line.356"></a> -<span class="sourceLineNo">357</span> // otherwise raise an exception saying that the snapshot is not running and doesn't exist.<a name="line.357"></a> -<span class="sourceLineNo">358</span> if (!isSnapshotCompleted(expected)) {<a name="line.358"></a> -<span class="sourceLineNo">359</span> throw new UnknownSnapshotException("Snapshot " + ssString<a name="line.359"></a> -<span class="sourceLineNo">360</span> + " is not currently running or one of the known completed snapshots.");<a name="line.360"></a> -<span class="sourceLineNo">361</span> }<a name="line.361"></a> -<span class="sourceLineNo">362</span> // was done, return true;<a name="line.362"></a> -<span class="sourceLineNo">363</span> return true;<a name="line.363"></a> -<span class="sourceLineNo">364</span> }<a name="line.364"></a> -<span class="sourceLineNo">365</span><a name="line.365"></a> -<span class="sourceLineNo">366</span> // pass on any failure we find in the sentinel<a name="line.366"></a> -<span class="sourceLineNo">367</span> try {<a name="line.367"></a> -<span class="sourceLineNo">368</span> handler.rethrowExceptionIfFailed();<a name="line.368"></a> -<span class="sourceLineNo">369</span> } catch (ForeignException e) {<a name="line.369"></a> -<span class="sourceLineNo">370</span> // Give some procedure info on an exception.<a name="line.370"></a> -<span class="sourceLineNo">371</span> String status;<a name="line.371"></a> -<span class="sourceLineNo">372</span> Procedure p = coordinator.getProcedure(expected.getName());<a name="line.372"></a> -<span class="sourceLineNo">373</span> if (p != null) {<a name="line.373"></a> -<span class="sourceLineNo">374</span> status = p.getStatus();<a name="line.374"></a> -<span class="sourceLineNo">375</span> } else {<a name="line.375"></a> -<span class="sourceLineNo">376</span> status = expected.getName() + " not found in proclist " + coordinator.getProcedureNames();<a name="line.376"></a> -<span class="sourceLineNo">377</span> }<a name="line.377"></a> -<span class="sourceLineNo">378</span> throw new HBaseSnapshotException("Snapshot " + ssString + " had an error. " + status, e,<a name="line.378"></a> -<span class="sourceLineNo">379</span> ProtobufUtil.createSnapshotDesc(expected));<a name="line.379"></a> -<span class="sourceLineNo">380</span> }<a name="line.380"></a> -<span class="sourceLineNo">381</span><a name="line.381"></a> -<span class="sourceLineNo">382</span> // check to see if we are done<a name="line.382"></a> -<span class="sourceLineNo">383</span> if (handler.isFinished()) {<a name="line.383"></a> -<span class="sourceLineNo">384</span> LOG.debug("Snapshot '" + ssString + "' has completed, notifying client.");<a name="line.384"></a> -<span class="sourceLineNo">385</span> return true;<a name="line.385"></a> -<span class="sourceLineNo">386</span> } else if (LOG.isDebugEnabled()) {<a name="line.386"></a> -<span class="sourceLineNo">387</span> LOG.debug("Snapshoting '" + ssString + "' is still in progress!");<a name="line.387"></a> -<span class="sourceLineNo">388</span> }<a name="line.388"></a> -<span class="sourceLineNo">389</span> return false;<a name="line.389"></a> -<span class="sourceLineNo">390</span> }<a name="line.390"></a> -<span class="sourceLineNo">391</span><a name="line.391"></a> -<span class="sourceLineNo">392</span> /**<a name="line.392"></a> -<span class="sourceLineNo">393</span> * Check to see if there is a snapshot in progress with the same name or on the same table.<a name="line.393"></a> -<span class="sourceLineNo">394</span> * Currently we have a limitation only allowing a single snapshot per table at a time. Also we<a name="line.394"></a> -<span class="sourceLineNo">395</span> * don't allow snapshot with the same name.<a name="line.395"></a> -<span class="sourceLineNo">396</span> * @param snapshot description of the snapshot being checked.<a name="line.396"></a> -<span class="sourceLineNo">397</span> * @return <tt>true</tt> if there is a snapshot in progress with the same name or on the same<a name="line.397"></a> -<span class="sourceLineNo">398</span> * table.<a name="line.398"></a> -<span class="sourceLineNo">399</span> */<a name="line.399"></a> -<span class="sourceLineNo">400</span> synchronized boolean isTakingSnapshot(final SnapshotDescription snapshot) {<a name="line.400"></a> -<span class="sourceLineNo">401</span> TableName snapshotTable = TableName.valueOf(snapshot.getTable());<a name="line.401"></a> -<span class="sourceLineNo">402</span> if (isTakingSnapshot(snapshotTable)) {<a name="line.402"></a> -<span class="sourceLineNo">403</span> return true;<a name="line.403"></a> -<span class="sourceLineNo">404</span> }<a name="line.404"></a> -<span class="sourceLineNo">405</span> Iterator<Map.Entry<TableName, SnapshotSentinel>> it = this.snapshotHandlers.entrySet().iterator();<a name="line.405"></a> -<span class="sourceLineNo">406</span> while (it.hasNext()) {<a name="line.406"></a> -<span class="sourceLineNo">407</span> Map.Entry<TableName, SnapshotSentinel> entry = it.next();<a name="line.407"></a> -<span class="sourceLineNo">408</span> SnapshotSentinel sentinel = entry.getValue();<a name="line.408"></a> -<span class="sourceLineNo">409</span> if (snapshot.getName().equals(sentinel.getSnapshot().getName()) && !sentinel.isFinished()) {<a name="line.409"></a> -<span class="sourceLineNo">410</span> return true;<a name="line.410"></a> -<span class="sourceLineNo">411</span> }<a name="line.411"></a> -<span class="sourceLineNo">412</span> }<a name="line.412"></a> -<span class="sourceLineNo">413</span> return false;<a name="line.413"></a> -<span class="sourceLineNo">414</span> }<a name="line.414"></a> -<span class="sourceLineNo">415</span><a name="line.415"></a> -<span class="sourceLineNo">416</span> /**<a name="line.416"></a> -<span class="sourceLineNo">417</span> * Check to see if the specified table has a snapshot in progress. Currently we have a<a name="line.417"></a> -<span class="sourceLineNo">418</span> * limitation only allowing a single snapshot per table at a time.<a name="line.418"></a> -<span class="sourceLineNo">419</span> * @param tableName name of the table being snapshotted.<a name="line.419"></a> -<span class="sourceLineNo">420</span> * @return <tt>true</tt> if there is a snapshot in progress on the specified table.<a name="line.420"></a> -<span class="sourceLineNo">421</span> */<a name="line.421"></a> -<span class="sourceLineNo">422</span> public synchronized boolean isTakingSnapshot(final TableName tableName) {<a name="line.422"></a> -<span class="sourceLineNo">423</span> SnapshotSentinel handler = this.snapshotHandlers.get(tableName);<a name="line.423"></a> -<span class="sourceLineNo">424</span> return handler != null && !handler.isFinished();<a name="line.424"></a> -<span class="sourceLineNo">425</span> }<a name="line.425"></a> -<span class="sourceLineNo">426</span><a name="line.426"></a> -<span class="sourceLineNo">427</span> /**<a name="line.427"></a> -<span class="sourceLineNo">428</span> * Check to make sure that we are OK to run the passed snapshot. Checks to make sure that we<a name="line.428"></a> -<span class="sourceLineNo">429</span> * aren't already running a snapshot or restore on the requested table.<a name="line.429"></a> -<span class="sourceLineNo">430</span> * @param snapshot description of the snapshot we want to start<a name="line.430"></a> -<span class="sourceLineNo">431</span> * @throws HBaseSnapshotException if the filesystem could not be prepared to start the snapshot<a name="line.431"></a> -<span class="sourceLineNo">432</span> */<a name="line.432"></a> -<span class="sourceLineNo">433</span> private synchronized void prepareToTakeSnapshot(SnapshotDescription snapshot)<a name="line.433"></a> -<span class="sourceLineNo">434</span> throws HBaseSnapshotException {<a name="line.434"></a> -<span class="sourceLineNo">435</span> Path workingDir = SnapshotDescriptionUtils.getWorkingSnapshotDir(snapshot, rootDir,<a name="line.435"></a> -<span class="sourceLineNo">436</span> master.getConfiguration());<a name="line.436"></a> -<span class="sourceLineNo">437</span> TableName snapshotTable =<a name="line.437"></a> -<span class="sourceLineNo">438</span> TableName.valueOf(snapshot.getTable());<a name="line.438"></a> -<span class="sourceLineNo">439</span><a name="line.439"></a> -<span class="sourceLineNo">440</span> // make sure we aren't already running a snapshot<a name="line.440"></a> -<span class="sourceLineNo">441</span> if (isTakingSnapshot(snapshot)) {<a name="line.441"></a> -<span class="sourceLineNo">442</span> SnapshotSentinel handler = this.snapshotHandlers.get(snapshotTable);<a name="line.442"></a> -<span class="sourceLineNo">443</span> throw new SnapshotCreationException("Rejected taking "<a name="line.443"></a> -<span class="sourceLineNo">444</span> + ClientSnapshotDescriptionUtils.toString(snapshot)<a name="line.444"></a> -<span class="sourceLineNo">445</span> + " because we are already running another snapshot "<a name="line.445"></a> -<span class="sourceLineNo">446</span> + (handler != null ? ("on the same table " +<a name="line.446"></a> -<span class="sourceLineNo">447</span> ClientSnapshotDescriptionUtils.toString(handler.getSnapshot()))<a name="line.447"></a> -<span class="sourceLineNo">448</span> : "with the same name"), ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.448"></a> -<span class="sourceLineNo">449</span> }<a name="line.449"></a> -<span class="sourceLineNo">450</span><a name="line.450"></a> -<span class="sourceLineNo">451</span> // make sure we aren't running a restore on the same table<a name="line.451"></a> -<span class="sourceLineNo">452</span> if (isRestoringTable(snapshotTable)) {<a name="line.452"></a> -<span class="sourceLineNo">453</span> throw new SnapshotCreationException("Rejected taking "<a name="line.453"></a> -<span class="sourceLineNo">454</span> + ClientSnapshotDescriptionUtils.toString(snapshot)<a name="line.454"></a> -<span class="sourceLineNo">455</span> + " because we are already have a restore in progress on the same snapshot.");<a name="line.455"></a> -<span class="sourceLineNo">456</span> }<a name="line.456"></a> -<span class="sourceLineNo">457</span><a name="line.457"></a> -<span class="sourceLineNo">458</span> try {<a name="line.458"></a> -<span class="sourceLineNo">459</span> FileSystem workingDirFS = workingDir.getFileSystem(master.getConfiguration());<a name="line.459"></a> -<span class="sourceLineNo">460</span> // delete the working directory, since we aren't running the snapshot. Likely leftovers<a name="line.460"></a> -<span class="sourceLineNo">461</span> // from a failed attempt.<a name="line.461"></a> -<span class="sourceLineNo">462</span> workingDirFS.delete(workingDir, true);<a name="line.462"></a> -<span class="sourceLineNo">463</span><a name="line.463"></a> -<span class="sourceLineNo">464</span> // recreate the working directory for the snapshot<a name="line.464"></a> -<span class="sourceLineNo">465</span> if (!workingDirFS.mkdirs(workingDir)) {<a name="line.465"></a> -<span class="sourceLineNo">466</span> throw new SnapshotCreationException("Couldn't create working directory (" + workingDir<a name="line.466"></a> -<span class="sourceLineNo">467</span> + ") for snapshot" , ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.467"></a> -<span class="sourceLineNo">468</span> }<a name="line.468"></a> -<span class="sourceLineNo">469</span> } catch (HBaseSnapshotException e) {<a name="line.469"></a> -<span class="sourceLineNo">470</span> throw e;<a name="line.470"></a> -<span class="sourceLineNo">471</span> } catch (IOException e) {<a name="line.471"></a> -<span class="sourceLineNo">472</span> throw new SnapshotCreationException(<a name="line.472"></a> -<span class="sourceLineNo">473</span> "Exception while checking to see if snapshot could be started.", e,<a name="line.473"></a> -<span class="sourceLineNo">474</span> ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.474"></a> -<span class="sourceLineNo">475</span> }<a name="line.475"></a> -<span class="sourceLineNo">476</span> }<a name="line.476"></a> -<span class="sourceLineNo">477</span><a name="line.477"></a> -<span class="sourceLineNo">478</span> /**<a name="line.478"></a> -<span class="sourceLineNo">479</span> * Take a snapshot of a disabled table.<a name="line.479"></a> -<span class="sourceLineNo">480</span> * @param snapshot description of the snapshot to take. Modified to be {@link Type#DISABLED}.<a name="line.480"></a> -<span class="sourceLineNo">481</span> * @throws IOException if the snapshot could not be started or filesystem for snapshot<a name="line.481"></a> -<span class="sourceLineNo">482</span> * temporary directory could not be determined<a name="line.482"></a> -<span class="sourceLineNo">483</span> */<a name="line.483"></a> -<span class="sourceLineNo">484</span> private synchronized void snapshotDisabledTable(SnapshotDescription snapshot)<a name="line.484"></a> -<span class="sourceLineNo">485</span> throws IOException {<a name="line.485"></a> -<span class="sourceLineNo">486</span> // setup the snapshot<a name="line.486"></a> -<span class="sourceLineNo">487</span> prepareToTakeSnapshot(snapshot);<a name="line.487"></a> -<span class="sourceLineNo">488</span><a name="line.488"></a> -<span class="sourceLineNo">489</span> // set the snapshot to be a disabled snapshot, since the client doesn't know about that<a name="line.489"></a> -<span class="sourceLineNo">490</span> snapshot = snapshot.toBuilder().setType(Type.DISABLED).build();<a name="line.490"></a> -<span class="sourceLineNo">491</span><a name="line.491"></a> -<span class="sourceLineNo">492</span> // Take the snapshot of the disabled table<a name="line.492"></a> -<span class="sourceLineNo">493</span> DisabledTableSnapshotHandler handler =<a name="line.493"></a> -<span class="sourceLineNo">494</span> new DisabledTableSnapshotHandler(snapshot, master, this);<a name="line.494"></a> -<span class="sourceLineNo">495</span> snapshotTable(snapshot, handler);<a name="line.495"></a> -<span class="sourceLineNo">496</span> }<a name="line.496"></a> -<span class="sourceLineNo">497</span><a name="line.497"></a> -<span class="sourceLineNo">498</span> /**<a name="line.498"></a> -<span class="sourceLineNo">499</span> * Take a snapshot of an enabled table.<a name="line.499"></a> -<span class="sourceLineNo">500</span> * @param snapshot description of the snapshot to take.<a name="line.500"></a> -<span class="sourceLineNo">501</span> * @throws IOException if the snapshot could not be started or filesystem for snapshot<a name="line.501"></a> -<span class="sourceLineNo">502</span> * temporary directory could not be determined<a name="line.502"></a> -<span class="sourceLineNo">503</span> */<a name="line.503"></a> -<span class="sourceLineNo">504</span> private synchronized void snapshotEnabledTable(SnapshotDescription snapshot)<a name="line.504"></a> -<span class="sourceLineNo">505</span> throws IOException {<a name="line.505"></a> -<span class="sourceLineNo">506</span> // setup the snapshot<a name="line.506"></a> -<span class="sourceLineNo">507</span> prepareToTakeSnapshot(snapshot);<a name="line.507"></a> -<span class="sourceLineNo">508</span><a name="line.508"></a> -<span class="sourceLineNo">509</span> // Take the snapshot of the enabled table<a name="line.509"></a> -<span class="sourceLineNo">510</span> EnabledTableSnapshotHandler handler =<a name="line.510"></a> -<span class="sourceLineNo">511</span> new EnabledTableSnapshotHandler(snapshot, master, this);<a name="line.511"></a> -<span class="sourceLineNo">512</span> snapshotTable(snapshot, handler);<a name="line.512"></a> -<span class="sourceLineNo">513</span> }<a name="line.513"></a> -<span class="sourceLineNo">514</span><a name="line.514"></a> -<span class="sourceLineNo">515</span> /**<a name="line.515"></a> -<span class="sourceLineNo">516</span> * Take a snapshot using the specified handler.<a name="line.516"></a> -<span class="sourceLineNo">517</span> * On failure the snapshot temporary working directory is removed.<a name="line.517"></a> -<span class="sourceLineNo">518</span> * NOTE: prepareToTakeSnapshot() called before this one takes care of the rejecting the<a name="line.518"></a> -<span class="sourceLineNo">519</span> * snapshot request if the table is busy with another snapshot/restore operation.<a name="line.519"></a> -<span class="sourceLineNo">520</span> * @param snapshot the snapshot description<a name="line.520"></a> -<span class="sourceLineNo">521</span> * @param handler the snapshot handler<a name="line.521"></a> -<span class="sourceLineNo">522</span> */<a name="line.522"></a> -<span class="sourceLineNo">523</span> private synchronized void snapshotTable(SnapshotDescription snapshot,<a name="line.523"></a> -<span class="sourceLineNo">524</span> final TakeSnapshotHandler handler) throws IOException {<a name="line.524"></a> -<span class="sourceLineNo">525</span> try {<a name="line.525"></a> -<span class="sourceLineNo">526</span> handler.prepare();<a name="line.526"></a> -<span class="sourceLineNo">527</span> this.executorService.submit(handler);<a name="line.527"></a> -<span class="sourceLineNo">528</span> this.snapshotHandlers.put(TableName.valueOf(snapshot.getTable()), handler);<a name="line.528"></a> -<span class="sourceLineNo">529</span> } catch (Exception e) {<a name="line.529"></a> -<span class="sourceLineNo">530</span> // cleanup the working directory by trying to delete it from the fs.<a name="line.530"></a> -<span class="sourceLineNo">531</span> Path workingDir = SnapshotDescriptionUtils.getWorkingSnapshotDir(snapshot, rootDir,<a name="line.531"></a> -<span class="sourceLineNo">532</span> master.getConfiguration());<a name="line.532"></a> -<span class="sourceLineNo">533</span> FileSystem workingDirFs = workingDir.getFileSystem(master.getConfiguration());<a name="line.533"></a> -<span class="sourceLineNo">534</span> try {<a name="line.534"></a> -<span class="sourceLineNo">535</span> if (!workingDirFs.delete(workingDir, true)) {<a name="line.535"></a> -<span class="sourceLineNo">536</span> LOG.error("Couldn't delete working directory (" + workingDir + " for snapshot:" +<a name="line.536"></a> -<span class="sourceLineNo">537</span> ClientSnapshotDescriptionUtils.toString(snapshot));<a name="line.537"></a> -<span class="sourceLineNo">538</span> }<a name="line.538"></a> -<span class="sourceLineNo">539</span> } catch (IOException e1) {<a name="line.539"></a> -<span class="sourceLineNo">540</span> LOG.error("Couldn't delete working directory (" + workingDir + " for snapshot:" +<a name="line.540"></a> -<span class="sourceLineNo">541</span> ClientSnapshotDescriptionUtils.toString(snapshot));<a name="line.541"></a> -<span class="sourceLineNo">542</span> }<a name="line.542"></a> -<span class="sourceLineNo">543</span> // fail the snapshot<a name="line.543"></a> -<span class="sourceLineNo">544</span> throw new SnapshotCreationException("Could not build snapshot handler", e,<a name="line.544"></a> -<span class="sourceLineNo">545</span> ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.545"></a> -<span class="sourceLineNo">546</span> }<a name="line.546"></a> -<span class="sourceLineNo">547</span> }<a name="line.547"></a> -<span class="sourceLineNo">548</span><a name="line.548"></a> -<span class="sourceLineNo">549</span> public ReadWriteLock getTakingSnapshotLock() {<a name="line.549"></a> -<span class="sourceLineNo">550</span> return this.takingSnapshotLock;<a name="line.550"></a> -<span class="sourceLineNo">551</span> }<a name="line.551"></a> -<span class="sourceLineNo">552</span><a name="line.552"></a> -<span class="sourceLineNo">553</span> /**<a name="line.553"></a> -<span class="sourceLineNo">554</span> * The snapshot operation processing as following: <br><a name="line.554"></a> -<span class="sourceLineNo">555</span> * 1. Create a Snapshot Handler, and do some initialization; <br><a name="line.555"></a> -<span class="sourceLineNo">556</span> * 2. Put the handler into snapshotHandlers <br><a name="line.556"></a> -<span class="sourceLineNo">557</span> * So when we consider if any snapshot is taking, we should consider both the takingSnapshotLock<a name="line.557"></a> -<span class="sourceLineNo">558</span> * and snapshotHandlers;<a name="line.558"></a> -<span class="sourceLineNo">559</span> * @return true to indicate that there're some running snapshots.<a name="line.559"></a> -<span class="sourceLineNo">560</span> */<a name="line.560"></a> -<span class="sourceLineNo">561</span> public synchronized boolean isTakingAnySnapshot() {<a name="line.561"></a> -<span class="sourceLineNo">562</span> return this.takingSnapshotLock.getReadHoldCount() > 0 || this.snapshotHandlers.size() > 0;<a name="line.562"></a> -<span class="sourceLineNo">563</span> }<a name="line.563"></a> -<span class="sourceLineNo">564</span><a name="line.564"></a> -<span class="sourceLineNo">565</span> /**<a name="line.565"></a> -<span class="sourceLineNo">566</span> * Take a snapshot based on the enabled/disabled state of the table.<a name="line.566"></a> -<span class="sourceLineNo">567</span> * @param snapshot<a name="line.567"></a> -<span class="sourceLineNo">568</span> * @throws HBaseSnapshotException when a snapshot specific exception occurs.<a name="line.568"></a> -<span class="sourceLineNo">569</span> * @throws IOException when some sort of generic IO exception occurs.<a name="line.569"></a> -<span class="sourceLineNo">570</span> */<a name="line.570"></a> -<span class="sourceLineNo">571</span> public void takeSnapshot(SnapshotDescription snapshot) throws IOException {<a name="line.571"></a> -<span class="sourceLineNo">572</span> this.takingSnapshotLock.readLock().lock();<a name="line.572"></a> -<span class="sourceLineNo">573</span> try {<a name="line.573"></a> -<span class="sourceLineNo">574</span> takeSnapshotInternal(snapshot);<a name="line.574"></a> -<span class="sourceLineNo">575</span> } finally {<a name="line.575"></a> -<span class="sourceLineNo">576</span> this.takingSnapshotLock.readLock().unlock();<a name="line.576"></a> -<span class="sourceLineNo">577</span> }<a name="line.577"></a> -<span class="sourceLineNo">578</span> }<a name="line.578"></a> -<span class="sourceLineNo">579</span><a name="line.579"></a> -<span class="sourceLineNo">580</span> private void takeSnapshotInternal(SnapshotDescription snapshot) throws IOException {<a name="line.580"></a> -<span class="sourceLineNo">581</span> // check to see if we already completed the snapshot<a name="line.581"></a> -<span class="sourceLineNo">582</span> if (isSnapshotCompleted(snapshot)) {<a name="line.582"></a> -<span class="sourceLineNo">583</span> throw new SnapshotExistsException(<a name="line.583"></a> -<span class="sourceLineNo">584</span> "Snapshot '" + snapshot.getName() + "' already stored on the filesystem.",<a name="line.584"></a> -<span class="sourceLineNo">585</span> ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.585"></a> -<span class="sourceLineNo">586</span> }<a name="line.586"></a> -<span class="sourceLineNo">587</span><a name="line.587"></a> -<span class="sourceLineNo">588</span> LOG.debug("No existing snapshot, attempting snapshot...");<a name="line.588"></a> -<span class="sourceLineNo">589</span><a name="line.589"></a> -<span class="sourceLineNo">590</span> // stop tracking "abandoned" handlers<a name="line.590"></a> -<span class="sourceLineNo">591</span> cleanupSentinels();<a name="line.591"></a> -<span class="sourceLineNo">592</span><a name="line.592"></a> -<span class="sourceLineNo">593</span> // check to see if the table exists<a name="line.593"></a> -<span class="sourceLineNo">594</span> TableDescriptor desc = null;<a name="line.594"></a> -<span class="sourceLineNo">595</span> try {<a name="line.595"></a> -<span class="sourceLineNo">596</span> desc = master.getTableDescriptors().get(<a name="line.596"></a> -<span class="sourceLineNo">597</span> TableName.valueOf(snapshot.getTable()));<a name="line.597"></a> -<span class="sourceLineNo">598</span> } catch (FileNotFoundException e) {<a name="line.598"></a> -<span class="sourceLineNo">599</span> String msg = "Table:" + snapshot.getTable() + " info doesn't exist!";<a name="line.599"></a> -<span class="sourceLineNo">600</span> LOG.error(msg);<a name="line.600"></a> -<span class="sourceLineNo">601</span> throw new SnapshotCreationException(msg, e, ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.601"></a> -<span class="sourceLineNo">602</span> } catch (IOException e) {<a name="line.602"></a> -<span class="sourceLineNo">603</span> throw new SnapshotCreationException(<a name="line.603"></a> -<span class="sourceLineNo">604</span> "Error while geting table description for table " + snapshot.getTable(), e,<a name="line.604"></a> -<span class="sourceLineNo">605</span> ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.605"></a> -<span class="sourceLineNo">606</span> }<a name="line.606"></a> -<span class="sourceLineNo">607</span> if (desc == null) {<a name="line.607"></a> -<span class="sourceLineNo">608</span> throw new SnapshotCreationException(<a name="line.608"></a> -<span class="sourceLineNo">609</span> "Table '" + snapshot.getTable() + "' doesn't exist, can't take snapshot.",<a name="line.609"></a> -<span class="sourceLineNo">610</span> ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.610"></a> -<span class="sourceLineNo">611</span> }<a name="line.611"></a> -<span class="sourceLineNo">612</span> SnapshotDescription.Builder builder = snapshot.toBuilder();<a name="line.612"></a> -<span class="sourceLineNo">613</span> // if not specified, set the snapshot format<a name="line.613"></a> -<span class="sourceLineNo">614</span> if (!snapshot.hasVersion()) {<a name="line.614"></a> -<span class="sourceLineNo">615</span> builder.setVersion(SnapshotDescriptionUtils.SNAPSHOT_LAYOUT_VERSION);<a name="line.615"></a> -<span class="sourceLineNo">616</span> }<a name="line.616"></a> -<span class="sourceLineNo">617</span> RpcServer.getRequestUser().ifPresent(user -> {<a name="line.617"></a> -<span class="sourceLineNo">618</span> if (User.isHBaseSecurityEnabled(master.getConfiguration())) {<a name="line.618"></a> -<span class="sourceLineNo">619</span> builder.setOwner(user.getShortName());<a name="line.619"></a> -<span class="sourceLineNo">620</span> }<a name="line.620"></a> -<span class="sourceLineNo">621</span> });<a name="line.621"></a> -<span class="sourceLineNo">622</span> snapshot = builder.build();<a name="line.622"></a> -<span class="sourceLineNo">623</span><a name="line.623"></a> -<span class="sourceLineNo">624</span> // call pre coproc hook<a name="line.624"></a> -<span class="sourceLineNo">625</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.625"></a> -<span class="sourceLineNo">626</span> org.apache.hadoop.hbase.client.SnapshotDescription snapshotPOJO = null;<a name="line.626"></a> -<span class="sourceLineNo">627</span> if (cpHost != null) {<a name="line.627"></a> -<span class="sourceLineNo">628</span> snapshotPOJO = ProtobufUtil.createSnapshotDesc(snapshot);<a name="line.628"></a> -<span class="sourceLineNo">629</span> cpHost.preSnapshot(snapshotPOJO, desc);<a name="line.629"></a> -<span class="sourceLineNo">630</span> }<a name="line.630"></a> -<span class="sourceLineNo">631</span><a name="line.631"></a> -<span class="sourceLineNo">632</span> // if the table is enabled, then have the RS run actually the snapshot work<a name="line.632"></a> -<span class="sourceLineNo">633</span> TableName snapshotTable = TableName.valueOf(snapshot.getTable());<a name="line.633"></a> -<span class="sourceLineNo">634</span> if (master.getTableStateManager().isTableState(snapshotTable,<a name="line.634"></a> -<span class="sourceLineNo">635</span> TableState.State.ENABLED)) {<a name="line.635"></a> -<span class="sourceLineNo">636</span> LOG.debug("Table enabled, starting distributed snapshot.");<a name="line.636"></a> -<span class="sourceLineNo">637</span> snapshotEnabledTable(snapshot);<a name="line.637"></a> -<span class="sourceLineNo">638</span> LOG.debug("Started snapshot: " + ClientSnapshotDescriptionUtils.toString(snapshot));<a name="line.638"></a> -<span class="sourceLineNo">639</span> }<a name="line.639"></a> -<span class="sourceLineNo">640</span> // For disabled table, snapshot is created by the master<a name="line.640"></a> -<span class="sourceLineNo">641</span> else if (master.getTableStateManager().isTableState(snapshotTable,<a name="line.641"></a> -<span class="sourceLineNo">642</span> TableState.State.DISABLED)) {<a name="line.642"></a> -<span class="sourceLineNo">643</span> LOG.debug("Table is disabled, running snapshot entirely on master.");<a name="line.643"></a> -<span class="sourceLineNo">644</span> snapshotDisabledTable(snapshot);<a name="line.644"></a> -<span class="sourceLineNo">645</span> LOG.debug("Started snapshot: " + ClientSnapshotDescriptionUtils.toString(snapshot));<a name="line.645"></a> -<span class="sourceLineNo">646</span> } else {<a name="line.646"></a> -<span class="sourceLineNo">647</span> LOG.error("Can't snapshot table '" + snapshot.getTable()<a name="line.647"></a> -<span class="sourceLineNo">648</span> + "', isn't open or closed, we don't know what to do!");<a name="line.648"></a> -<span class="sourceLineNo">649</span> TablePartiallyOpenException tpoe = new TablePartiallyOpenException(snapshot.getTable()<a name="line.649"></a> -<span class="sourceLineNo">650</span> + " isn't fully open.");<a name="line.650"></a> -<span class="sourceLineNo">651</span> throw new SnapshotCreationException("Table is not entirely open or closed", tpoe,<a name="line.651"></a> -<span class="sourceLineNo">652</span> ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.652"></a> -<span class="sourceLineNo">653</span> }<a name="line.653"></a> -<span class="sourceLineNo">654</span><a name="line.654"></a> -<span class="sourceLineNo">655</span> // call post coproc hook<a name="line.655"></a> -<span class="sourceLineNo">656</span> if (cpHost != null) {<a name="line.656"></a> -<span class="sourceLineNo">657</span> cpHost.postSnapshot(snapshotPOJO, desc);<a name="line.657"></a> -<span class="sourceLineNo">658</span> }<a name="line.658"></a> -<span class="sourceLineNo">659</span> }<a name="line.659"></a> -<span class="sourceLineNo">660</span><a name="line.660"></a> -<span class="sourceLineNo">661</span> /**<a name="line.661"></a> -<span class="sourceLineNo">662</span> * Set the handler for the current snapshot<a name="line.662"></a> -<span class="sourceLineNo">663</span> * <p><a name="line.663"></a> -<span class="sourceLineNo">664</span> * Exposed for TESTING<a name="line.664"></a> -<span class="sourceLineNo">665</span> * @param tableName<a name="line.665"></a> -<span class="sourceLineNo">666</span> * @param handler handler the master should use<a name="line.666"></a> -<span class="sourceLineNo">667</span> *<a name="line.667"></a> -<span class="sourceLineNo">668</span> * TODO get rid of this if possible, repackaging, modify tests.<a name="line.668"></a> -<span class="sourceLineNo">669</span> */<a name="line.669"></a> -<span class="sourceLineNo">670</span> public synchronized void setSnapshotHandlerForTesting(<a name="line.670"></a> -<span class="sourceLineNo">671</span> final TableName tableName,<a name="line.671"></a> -<span class="sourceLineNo">672</span> final SnapshotSentinel handler) {<a name="line.672"></a> -<span class="sourceLineNo">673</span> if (handler != null) {<a name="line.673"></a> -<span class="sourceLineNo">674</span> this.snapshotHandlers.put(tableName, handler);<a name="line.674"></a> -<span class="sourceLineNo">675</span> } else {<a name="line.675"></a> -<span class="sourceLineNo">676</span> this.snapshotHandlers.remove(tableName);<a name="line.676"></a> -<span class="sourceLineNo">677</span> }<a name="line.677"></a> -<span class="sourceLineNo">678</span> }<a name="line.678"></a> -<span class="sourceLineNo">679</span><a name="line.679"></a> -<span class="sourceLineNo">680</span> /**<a name="line.680"></a> -<span class="sourceLineNo">681</span> * @return distributed commit coordinator for all running snapshots<a name="line.681"></a> -<span class="sourceLineNo">682</span> */<a name="line.682"></a> -<span class="sourceLineNo">683</span> ProcedureCoordinator getCoordinator() {<a name="line.683"></a> -<span class="sourceLineNo">684</span> return coordinator;<a name="line.684"></a> -<span class="sourceLineNo">685</span> }<a name="line.685"></a> -<span class="sourceLineNo">686</span><a name="line.686"></a> -<span class="sourceLineNo">687</span> /**<a name="line.687"></a> -<span class="sourceLineNo">688</span> * Check to see if the snapshot is one of the currently completed snapshots<a name="line.688"></a> -<span class="sourceLineNo">689</span> * Returns true if the snapshot exists in the "completed snapshots folder".<a name="line.689"></a> -<span class="sourceLineNo">690</span> *<a name="line.690"></a> -<span class="sourceLineNo">691</span> * @param snapshot expected snapshot to check<a name="line.691"></a> -<span class="sourceLineNo">692</span> * @return <tt>true</tt> if the snapshot is stored on the {@link FileSystem}, <tt>false</tt> if is<a name="line.692"></a> -<span class="sourceLineNo">693</span> * not stored<a name="line.693"></a> -<span class="sourceLineNo">694</span> * @throws IOException if the filesystem throws an unexpected exception,<a name="line.694"></a> -<span class="sourceLineNo">695</span> * @throws IllegalArgumentException if snapshot name is invalid.<a name="line.695"></a> -<span class="sourceLineNo">696</span> */<a name="line.696"></a> -<span class="sourceLineNo">697</span> private boolean isSnapshotCompleted(SnapshotDescription snapshot) throws IOException {<a name="line.697"></a> -<span class="sourceLineNo">698</span> try {<a name="line.698"></a> -<span class="sourceLineNo">699</span> final Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshot, rootDir);<a name="line.699"></a> -<span class="sourceLineNo">700</span> FileSystem fs = master.getMasterFileSystem().getFileSystem();<a name="line.700"></a> -<span class="sourceLineNo">701</span> // check to see if the snapshot already exists<a name="line.701"></a> -<span class="sourceLineNo">702</span> return fs.exists(snapshotDir);<a name="line.702"></a> -<span class="sourceLineNo">703</span> } catch (IllegalArgumentException iae) {<a name="line.703"></a> -<span class="sourceLineNo">704</span> throw new UnknownSnapshotException("Unexpected exception thrown", iae);<a name="line.704"></a> -<span class="sourceLineNo">705</span> }<a name="line.705"></a> -<span class="sourceLineNo">706</span> }<a name="line.706"></a> -<span class="sourceLineNo">707</span><a name="line.707"></a> -<span class="sourceLineNo">708</span> /**<a name="line.708"></a> -<span class="sourceLineNo">709</span> * Clone the specified snapshot.<a name="line.709"></a> -<span class="sourceLineNo">710</span> * The clone will fail if the destination table has a snapshot or restore in progress.<a name="line.710"></a> -<span class="sourceLineNo">711</span> *<a name="line.711"></a> -<span class="sourceLineNo">712</span> * @param reqSnapshot Snapshot Descriptor from request<a name="line.712"></a> -<span class="sourceLineNo">713</span> * @param tableName table to clone<a name="line.713"></a> -<span class="sourceLineNo">714</span> * @param snapshot Snapshot Descriptor<a name="line.714"></a> -<span class="sourceLineNo">715</span> * @param snapshotTableDesc Table Descriptor<a name="line.715"></a> -<span class="sourceLineNo">716</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.716"></a> -<span class="sourceLineNo">717</span> * @return procId the ID of the clone snapshot procedure<a name="line.717"></a> -<span class="sourceLineNo">718</span> * @throws IOException<a name="line.718"></a> -<span class="sourceLineNo">719</span> */<a name="line.719"></a> -<span class="sourceLineNo">720</span> private long cloneSnapshot(final SnapshotDescription reqSnapshot, final TableName tableName,<a name="line.720"></a> -<span class="sourceLineNo">721</span> final SnapshotDescription snapshot, final TableDescriptor snapshotTableDesc,<a name="line.721"></a> -<span class="sourceLineNo">722</span> final NonceKey nonceKey, final boolean restoreAcl) throws IOException {<a name="line.722"></a> -<span class="sourceLineNo">723</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.723"></a> -<span class="sourceLineNo">724</span> TableDescriptor htd = TableDescriptorBuilder.copy(tableName, snapshotTableDesc);<a name="line.724"></a> -<span class="sourceLineNo">725</span> org.apache.hadoop.hbase.client.SnapshotDescription snapshotPOJO = null;<a name="line.725"></a> -<span class="sourceLineNo">726</span> if (cpHost != null) {<a name="line.726"></a> -<span class="sourceLineNo">727</span> snapshotPOJO = ProtobufUtil.createSnapshotDesc(snapshot);<a name="line.727"></a> -<span class="sourceLineNo">728</span> cpHost.preCloneSnapshot(snapshotPOJO, htd);<a name="line.728"></a> -<span class="sourceLineNo">729</span> }<a name="line.729"></a> -<span class="sourceLineNo">730</span> long procId;<a name="line.730"></a> -<span class="sourceLineNo">731</span> try {<a name="line.731"></a> -<span class="sourceLineNo">732</span> procId = cloneSnapshot(snapshot, htd, nonceKey, restoreAcl);<a name="line.732"></a> -<span class="sourceLineNo">733</span> } catch (IOException e) {<a name="line.733"></a> -<span class="sourceLineNo">734</span> LOG.error("Exception occurred while cloning the snapshot " + snapshot.getName()<a name="line.734"></a> -<span class="sourceLineNo">735</span> + " as table " + tableName.getNameAsString(), e);<a name="line.735"></a> -<span class="sourceLineNo">736</span> throw e;<a name="line.736"></a> -<span class="sourceLineNo">737</span> }<a name="line.737"></a> -<span class="sourceLineNo">738</span> LOG.info("Clone snapshot=" + snapshot.getName() + " as table=" + tableName);<a name="line.738"></a> -<span class="sourceLineNo">739</span><a name="line.739"></a> -<span class="sourceLineNo">740</span> if (cpHost != null) {<a name="line.740"></a> -<span class="sourceLineNo">741</span> cpHost.postCloneSnapshot(snapshotPOJO, htd);<a name="line.741"></a> -<span class="sourceLineNo">742</span> }<a name="line.742"></a> -<span class="sourceLineNo">743</span> return procId;<a name="line.743"></a> -<span class="sourceLineNo">744</span> }<a name="line.744"></a> -<span class="sourceLineNo">745</span><a name="line.745"></a> -<span class="sourceLineNo">746</span> /**<a name="line.746"></a> -<span class="sourceLineNo">747</span> * Clone the specified snapshot into a new table.<a name="line.747"></a> -<span class="sourceLineNo">748</span> * The operation will fail if the destination table has a snapshot or restore in progress.<a name="line.748"></a> -<span class="sourceLineNo">749</span> *<a name="line.749"></a> -<span class="sourceLineNo">750</span> * @param snapshot Snapshot Descriptor<a name="line.750"></a> -<span class="sourceLineNo">751</span> * @param tableDescriptor Table Descriptor of the table to create<a name="line.751"></a> -<span class="sourceLineNo">752</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.752"></a> -<span class="sourceLineNo">753</span> * @return procId the ID of the clone snapshot procedure<a name="line.753"></a> -<span class="sourceLineNo">754</span> */<a name="line.754"></a> -<span class="sourceLineNo">755</span> synchronized long cloneSnapshot(final SnapshotDescription snapshot,<a name="line.755"></a> -<span class="sourceLineNo">756</span> final TableDescriptor tableDescriptor, final NonceKey nonceKey, final boolean restoreAcl)<a name="line.756"></a> -<span class="sourceLineNo">757</span> throws HBaseSnapshotException {<a name="line.757"></a> -<span class="sourceLineNo">758</span> TableName tableName = tableDescriptor.getTableName();<a name="line.758"></a> -<span class="sourceLineNo">759</span><a name="line.759"></a> -<span class="sourceLineNo">760</span> // make sure we aren't running a snapshot on the same table<a name="line.760"></a> -<span class="sourceLineNo">761</span> if (isTakingSnapshot(tableName)) {<a name="line.761"></a> -<span class="sourceLineNo">762</span> throw new RestoreSnapshotException("Snapshot in progress on the restore table=" + tableName);<a name="line.762"></a> -<span class="sourceLineNo">763</span> }<a name="line.763"></a> -<span class="sourceLineNo">764</span><a name="line.764"></a> -<span class="sourceLineNo">765</span> // make sure we aren't running a restore on the same table<a name="line.765"></a> -<span class="sourceLineNo">766</span> if (isRestoringTable(tableName)) {<a name="line.766"></a> -<span class="sourceLineNo">767</span> throw new RestoreSnapshotException("Restore already in progress on the table=" + tableName);<a name="line.767"></a> -<span class="sourceLineNo">768</span> }<a name="line.768"></a> -<span class="sourceLineNo">769</span><a name="line.769"></a> -<span class="sourceLineNo">770</span> try {<a name="line.770"></a> -<span class="sourceLineNo">771</span> long procId = master.getMasterProcedureExecutor().submitProcedure(<a name="line.771"></a> -<span class="sourceLineNo">772</span> new CloneSnapshotProcedure(master.getMasterProcedureExecutor().getEnvironment(),<a name="line.772"></a> -<span class="sourceLineNo">773</span> tableDescriptor, snapshot, restoreAcl),<a name="line.773"></a> -<span class="sourceLineNo">774</span> nonceKey);<a name="line.774"></a> -<span class="sourceLineNo">775</span> this.restoreTableToProcIdMap.put(tableName, procId);<a name="line.775"></a> -<span class="sourceLineNo">776</span> return procId;<a name="line.776"></a> -<span class="sourceLineNo">777</span> } catch (Exception e) {<a name="line.777"></a> -<span class="sourceLineNo">778</span> String msg = "Couldn't clone the snapshot="<a name="line.778"></a> -<span class="sourceLineNo">779</span> + ClientSnapshotDescriptionUtils.toString(snapshot) + " on table=" + tableName;<a name="line.779"></a> -<span class="sourceLineNo">780</span> LOG.error(msg, e);<a name="line.780"></a> -<span class="sourceLineNo">781</span> throw new RestoreSnapshotException(msg, e);<a name="line.781"></a> -<span class="sourceLineNo">782</span> }<a name="line.782"></a> -<span class="sourceLineNo">783</span> }<a name="line.783"></a> -<span class="sourceLineNo">784</span><a name="line.784"></a> -<span class="sourceLineNo">785</span> /**<a name="line.785"></a> -<span class="sourceLineNo">786</span> * Restore or Clone the specified snapshot<a name="line.786"></a> -<span class="sourceLineNo">787</span> * @param reqSnapshot<a name="line.787"></a> -<span class="sourceLineNo">788</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.788"></a> -<span class="sourceLineNo">789</span> * @throws IOException<a name="line.789"></a> -<span class="sourceLineNo">790</span> */<a name="line.790"></a> -<span class="sourceLineNo">791</span> public long restoreOrCloneSnapshot(final SnapshotDescription reqSnapshot, final NonceKey nonceKey,<a name="line.791"></a> -<span class="sourceLineNo">792</span> final boolean restoreAcl) throws IOException {<a name="line.792"></a> -<span class="sourceLineNo">793</span> FileSystem fs = master.getMasterFileSystem().getFileSystem();<a name="line.793"></a> -<span class="sourceLineNo">794</span> Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(reqSnapshot, rootDir);<a name="line.794"></a> -<span class="sourceLineNo">795</span><a name="line.795"></a> -<span class="sourceLineNo">796</span> // check if the snapshot exists<a name="line.796"></a> -<span class="sourceLineNo">797</span> if (!fs.exists(snapshotDir)) {<a name="line.797"></a> -<span class="sourceLineNo">798</span> LOG.error("A Snapshot named '" + reqSnapshot.getName() + "' does not exist.");<a name="line.798"></a> -<span class="sourceLineNo">799</span> throw new SnapshotDoesNotExistException(<a name="line.799"></a> -<span class="sourceLineNo">800</span> ProtobufUtil.createSnapshotDesc(reqSnapshot));<a name="line.800"></a> -<span class="sourceLineNo">801</span> }<a name="line.801"></a> -<span class="sourceLineNo">802</span><a name="line.802"></a> -<span class="sourceLineNo">803</span> // Get snapshot info from file system. The reqSnapshot is a "fake" snapshotInfo with<a name="line.803"></a> -<span class="sourceLineNo">804</span> // just the snapshot "name" and table name to restore. It does not contains the "real" snapshot<a name="line.804"></a> -<span class="sourceLineNo">805</span> // information.<a name="line.805"></a> -<span class="sourceLineNo">806</span> SnapshotDescription snapshot = SnapshotDescriptionUtils.readSnapshotInfo(fs, snapshotDir);<a name="line.806"></a> -<span class="sourceLineNo">807</span> SnapshotManifest manifest = SnapshotManifest.open(master.getConfiguration(), fs,<a name="line.807"></a> -<span class="sourceLineNo">808</span> snapshotDir, snapshot);<a name="line.808"></a> -<span class="sourceLineNo">809</span> TableDescriptor snapshotTableDesc = manifest.getTableDescriptor();<a name="line.809"></a> -<span class="sourceLineNo">810</span> TableName tableName = TableName.valueOf(reqSnapshot.getTable());<a name="line.810"></a> -<span class="sourceLineNo">811</span><a name="line.811"></a> -<span class="sourceLineNo">812</span> // stop tracking "abandoned" handlers<a name="line.812"></a> -<span class="sourceLineNo">813</span> cleanupSentinels();<a name="line.813"></a> -<span class="sourceLineNo">814</span><a name="line.814"></a> -<span class="sourceLineNo">815</span> // Verify snapshot validity<a name="line.815"></a> -<span class="sourceLineNo">816</span> SnapshotReferenceUtil.verifySnapshot(master.getConfiguration(), fs, manifest);<a name="line.816"></a> -<span class="sourceLineNo">817</span><a name="line.817"></a> -<span class="sourceLineNo">818</span> // Execute the restore/clone operation<a name="line.818"></a> -<span class="sourceLineNo">819</span> long procId;<a name="line.819"></a> -<span class="sourceLineNo">820</span> if (MetaTableAccessor.tableExists(master.getConnection(), tableName)) {<a name="line.820"></a> -<span class="sourceLineNo">821</span> procId = restoreSnapshot(reqSnapshot, tableName, snapshot, snapshotTableDesc, nonceKey,<a name="line.821"></a> -<span class="sourceLineNo">822</span> restoreAcl);<a name="line.822"></a> -<span class="sourceLineNo">823</span> } else {<a name="line.823"></a> -<span class="sourceLineNo">824</span> procId =<a name="line.824"></a> -<span class="sourceLineNo">825</span> cloneSnapshot(reqSnapshot, tableName, snapshot, snapshotTableDesc, nonceKey, restoreAcl);<a name="line.825"></a> -<span class="sourceLineNo">826</span> }<a name="line.826"></a> -<span class="sourceLineNo">827</span> return procId;<a name="line.827"></a> -<span class="sourceLineNo">828</span> }<a name="line.828"></a> -<span class="sourceLineNo">829</span><a name="line.829"></a> -<span class="sourceLineNo">830</span> /**<a name="line.830"></a> -<span class="sourceLineNo">831</span> * Restore the specified snapshot. The restore will fail if the destination table has a snapshot<a name="line.831"></a> -<span class="sourceLineNo">832</span> * or restore in progress.<a name="line.832"></a> -<span class="sourceLineNo">833</span> * @param reqSnapshot Snapshot Descriptor from request<a name="line.833"></a> -<span class="sourceLineNo">834</span> * @param tableName table to restore<a name="line.834"></a> -<span class="sourceLineNo">835</span> * @param snapshot Snapshot Descriptor<a name="line.835"></a> -<span class="sourceLineNo">836</span> * @param snapshotTableDesc Table Descriptor<a name="line.836"></a> -<span class="sourceLineNo">837</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.837"></a> -<span class="sourceLineNo">838</span> * @param restoreAcl true to restore acl of snapshot<a name="line.838"></a> -<span class="sourceLineNo">839</span> * @return procId the ID of the restore snapshot procedure<a name="line.839"></a> -<span class="sourceLineNo">840</span> * @throws IOException<a name="line.840"></a> -<span class="sourceLineNo">841</span> */<a name="line.841"></a> -<span class="sourceLineNo">842</span> private long restoreSnapshot(final SnapshotDescription reqSnapshot, final TableName tableName,<a name="line.842"></a> -<span class="sourceLineNo">843</span> final SnapshotDescription snapshot, final TableDescriptor snapshotTableDesc,<a name="line.843"></a> -<span class="sourceLineNo">844</span> final NonceKey nonceKey, final boolean restoreAcl) throws IOException {<a name="line.844"></a> -<span class="sourceLineNo">845</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.845"></a> -<span class="sourceLineNo">846</span><a name="line.846"></a> -<span class="sourceLineNo">847</span> if (master.getTableStateManager().isTableState(<a name="line.847"></a> -<span class="sourceLineNo">848</span> TableName.valueOf(snapshot.getTable()), TableState.State.ENABLED)) {<a name="line.848"></a> -<span class="sourceLineNo">849</span> throw new UnsupportedOperationException("Table '" +<a name="line.849"></a> -<span class="sourceLineNo">850</span> TableName.valueOf(snapshot.getTable()) + "' must be disabled in order to " +<a name="line.850"></a> -<span class="sourceLineNo">851</span> "perform a restore operation.");<a name="line.851"></a> -<span class="sourceLineNo">852</span> }<a name="line.852"></a> -<span class="sourceLineNo">853</span><a name="line.853"></a> -<span class="sourceLineNo">854</span> // call Coprocessor pre hook<a name="line.854"></a> -<span class="sourceLineNo">855</span> org.apache.hadoop.hbase.client.SnapshotDescription snapshotPOJO = null;<a name="line.855"></a> -<span class="sourceLineNo">856</span> if (cpHost != null) {<a name="line.856"></a> -<span class="sourceLineNo">857</span> snapshotPOJO = ProtobufUtil.createSnapshotDesc(snapshot);<a name="line.857"></a> -<span class="sourceLineNo">858</span> cpHost.preRestoreSnapshot(snapshotPOJO, snapshotTableDesc);<a name="line.858"></a> -<span class="sourceLineNo">859</span> }<a name="line.859"></a> -<span class="sourceLineNo">860</span><a name="line.860"></a> -<span class="sourceLineNo">861</span> long procId;<a name="line.861"></a> -<span class="sourceLineNo">862</span> try {<a name="line.862"></a> -<span class="sourceLineNo">863</span> procId = restoreSnapshot(snapshot, snapshotTableDesc, nonceKey, restoreAcl);<a name="line.863"></a> -<span class="sourceLineNo">864</span> } catch (IOException e) {<a name="line.864"></a> -<span class="sourceLineNo">865</span> LOG.error("Exception occurred while restoring the snapshot " + snapshot.getName()<a name="line.865"></a> -<span class="sourceLineNo">866</span> + " as table " + tableName.getNameAsString(), e);<a name="line.866"></a> -<span class="sourceLineNo">867</span> throw e;<a name="line.867"></a> -<span class="sourceLineNo">868</span> }<a name="line.868"></a> -<span class="sourceLineNo">869</span> LOG.info("Restore snapshot=" + snapshot.getName() + " as table=" + tableName);<a name="line.869"></a> -<span class="sourceLineNo">870</span><a name="line.870"></a> -<span class="sourceLineNo">871</span> if (cpHost != null) {<a name="line.871"></a> -<span class="sourceLineNo">872</span> cpHost.postRestoreSnapshot(snapshotPOJO, snapshotTableDesc);<a name="line.872"></a> -<span class="sourceLineNo">873</span> }<a name="line.873"></a> -<span class="sourceLineNo">874</span><a name="line.874"></a> -<span class="sourceLineNo">875</span> return procId;<a name="line.875"></a> -<span class="sourceLineNo">876</span> }<a name="line.876"></a> -<span class="sourceLineNo">877</span><a name="line.877"></a> -<span class="sourceLineNo">878</span> /**<a name="line.878"></a> -<span class="sourceLineNo">879</span> * Restore the specified snapshot. The restore will fail if the destination table has a snapshot<a name="line.879"></a> -<span class="sourceLineNo">880</span> * or restore in progress.<a name="l
<TRUNCATED>