http://git-wip-us.apache.org/repos/asf/hbase-site/blob/e0fb1fde/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupManager.html index d0d6f47..45e4c6c 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupManager.html @@ -40,499 +40,505 @@ <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HConstants;<a name="line.32"></a> <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HTableDescriptor;<a name="line.33"></a> <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.TableName;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.backup.BackupInfo;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.backup.BackupInfo.BackupState;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.backup.BackupObserver;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.backup.BackupRestoreConstants;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.backup.BackupType;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.backup.HBackupFileSystem;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.backup.impl.BackupManifest.BackupImage;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.backup.master.BackupLogCleaner;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.backup.master.LogRollMasterProcedureManager;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.backup.regionserver.LogRollRegionServerProcedureManager;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.procedure.ProcedureManagerHost;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.slf4j.Logger;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.slf4j.LoggerFactory;<a name="line.53"></a> -<span class="sourceLineNo">054</span><a name="line.54"></a> -<span class="sourceLineNo">055</span>/**<a name="line.55"></a> -<span class="sourceLineNo">056</span> * Handles backup requests, creates backup info records in backup system table to keep track of<a name="line.56"></a> -<span class="sourceLineNo">057</span> * backup sessions, dispatches backup request.<a name="line.57"></a> -<span class="sourceLineNo">058</span> */<a name="line.58"></a> -<span class="sourceLineNo">059</span>@InterfaceAudience.Private<a name="line.59"></a> -<span class="sourceLineNo">060</span>public class BackupManager implements Closeable {<a name="line.60"></a> -<span class="sourceLineNo">061</span> // in seconds<a name="line.61"></a> -<span class="sourceLineNo">062</span> public final static String BACKUP_EXCLUSIVE_OPERATION_TIMEOUT_SECONDS_KEY =<a name="line.62"></a> -<span class="sourceLineNo">063</span> "hbase.backup.exclusive.op.timeout.seconds";<a name="line.63"></a> -<span class="sourceLineNo">064</span> // In seconds<a name="line.64"></a> -<span class="sourceLineNo">065</span> private final static int DEFAULT_BACKUP_EXCLUSIVE_OPERATION_TIMEOUT = 3600;<a name="line.65"></a> -<span class="sourceLineNo">066</span> private static final Logger LOG = LoggerFactory.getLogger(BackupManager.class);<a name="line.66"></a> -<span class="sourceLineNo">067</span><a name="line.67"></a> -<span class="sourceLineNo">068</span> protected Configuration conf = null;<a name="line.68"></a> -<span class="sourceLineNo">069</span> protected BackupInfo backupInfo = null;<a name="line.69"></a> -<span class="sourceLineNo">070</span> protected BackupSystemTable systemTable;<a name="line.70"></a> -<span class="sourceLineNo">071</span> protected final Connection conn;<a name="line.71"></a> -<span class="sourceLineNo">072</span><a name="line.72"></a> -<span class="sourceLineNo">073</span> /**<a name="line.73"></a> -<span class="sourceLineNo">074</span> * Backup manager constructor.<a name="line.74"></a> -<span class="sourceLineNo">075</span> * @param conn connection<a name="line.75"></a> -<span class="sourceLineNo">076</span> * @param conf configuration<a name="line.76"></a> -<span class="sourceLineNo">077</span> * @throws IOException exception<a name="line.77"></a> -<span class="sourceLineNo">078</span> */<a name="line.78"></a> -<span class="sourceLineNo">079</span> public BackupManager(Connection conn, Configuration conf) throws IOException {<a name="line.79"></a> -<span class="sourceLineNo">080</span> if (!conf.getBoolean(BackupRestoreConstants.BACKUP_ENABLE_KEY,<a name="line.80"></a> -<span class="sourceLineNo">081</span> BackupRestoreConstants.BACKUP_ENABLE_DEFAULT)) {<a name="line.81"></a> -<span class="sourceLineNo">082</span> throw new BackupException("HBase backup is not enabled. Check your "<a name="line.82"></a> -<span class="sourceLineNo">083</span> + BackupRestoreConstants.BACKUP_ENABLE_KEY + " setting.");<a name="line.83"></a> -<span class="sourceLineNo">084</span> }<a name="line.84"></a> -<span class="sourceLineNo">085</span> this.conf = conf;<a name="line.85"></a> -<span class="sourceLineNo">086</span> this.conn = conn;<a name="line.86"></a> -<span class="sourceLineNo">087</span> this.systemTable = new BackupSystemTable(conn);<a name="line.87"></a> -<span class="sourceLineNo">088</span> }<a name="line.88"></a> -<span class="sourceLineNo">089</span><a name="line.89"></a> -<span class="sourceLineNo">090</span> /**<a name="line.90"></a> -<span class="sourceLineNo">091</span> * Returns backup info<a name="line.91"></a> -<span class="sourceLineNo">092</span> */<a name="line.92"></a> -<span class="sourceLineNo">093</span> protected BackupInfo getBackupInfo() {<a name="line.93"></a> -<span class="sourceLineNo">094</span> return backupInfo;<a name="line.94"></a> -<span class="sourceLineNo">095</span> }<a name="line.95"></a> -<span class="sourceLineNo">096</span><a name="line.96"></a> -<span class="sourceLineNo">097</span> /**<a name="line.97"></a> -<span class="sourceLineNo">098</span> * This method modifies the master's configuration in order to inject backup-related features<a name="line.98"></a> -<span class="sourceLineNo">099</span> * (TESTs only)<a name="line.99"></a> -<span class="sourceLineNo">100</span> * @param conf configuration<a name="line.100"></a> -<span class="sourceLineNo">101</span> */<a name="line.101"></a> -<span class="sourceLineNo">102</span> @VisibleForTesting<a name="line.102"></a> -<span class="sourceLineNo">103</span> public static void decorateMasterConfiguration(Configuration conf) {<a name="line.103"></a> -<span class="sourceLineNo">104</span> if (!isBackupEnabled(conf)) {<a name="line.104"></a> -<span class="sourceLineNo">105</span> return;<a name="line.105"></a> -<span class="sourceLineNo">106</span> }<a name="line.106"></a> -<span class="sourceLineNo">107</span> // Add WAL archive cleaner plug-in<a name="line.107"></a> -<span class="sourceLineNo">108</span> String plugins = conf.get(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS);<a name="line.108"></a> -<span class="sourceLineNo">109</span> String cleanerClass = BackupLogCleaner.class.getCanonicalName();<a name="line.109"></a> -<span class="sourceLineNo">110</span> if (!plugins.contains(cleanerClass)) {<a name="line.110"></a> -<span class="sourceLineNo">111</span> conf.set(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS, plugins + "," + cleanerClass);<a name="line.111"></a> -<span class="sourceLineNo">112</span> }<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> String classes = conf.get(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY);<a name="line.114"></a> -<span class="sourceLineNo">115</span> String masterProcedureClass = LogRollMasterProcedureManager.class.getName();<a name="line.115"></a> -<span class="sourceLineNo">116</span> if (classes == null) {<a name="line.116"></a> -<span class="sourceLineNo">117</span> conf.set(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY, masterProcedureClass);<a name="line.117"></a> -<span class="sourceLineNo">118</span> } else if (!classes.contains(masterProcedureClass)) {<a name="line.118"></a> -<span class="sourceLineNo">119</span> conf.set(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY,<a name="line.119"></a> -<span class="sourceLineNo">120</span> classes + "," + masterProcedureClass);<a name="line.120"></a> -<span class="sourceLineNo">121</span> }<a name="line.121"></a> -<span class="sourceLineNo">122</span><a name="line.122"></a> -<span class="sourceLineNo">123</span> if (LOG.isDebugEnabled()) {<a name="line.123"></a> -<span class="sourceLineNo">124</span> LOG.debug("Added log cleaner: " + cleanerClass + "\n" + "Added master procedure manager: "<a name="line.124"></a> -<span class="sourceLineNo">125</span> + masterProcedureClass);<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><a name="line.128"></a> -<span class="sourceLineNo">129</span> /**<a name="line.129"></a> -<span class="sourceLineNo">130</span> * This method modifies the Region Server configuration in order to inject backup-related features<a name="line.130"></a> -<span class="sourceLineNo">131</span> * TESTs only.<a name="line.131"></a> -<span class="sourceLineNo">132</span> * @param conf configuration<a name="line.132"></a> -<span class="sourceLineNo">133</span> */<a name="line.133"></a> -<span class="sourceLineNo">134</span> @VisibleForTesting<a name="line.134"></a> -<span class="sourceLineNo">135</span> public static void decorateRegionServerConfiguration(Configuration conf) {<a name="line.135"></a> -<span class="sourceLineNo">136</span> if (!isBackupEnabled(conf)) {<a name="line.136"></a> -<span class="sourceLineNo">137</span> return;<a name="line.137"></a> -<span class="sourceLineNo">138</span> }<a name="line.138"></a> -<span class="sourceLineNo">139</span><a name="line.139"></a> -<span class="sourceLineNo">140</span> String classes = conf.get(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY);<a name="line.140"></a> -<span class="sourceLineNo">141</span> String regionProcedureClass = LogRollRegionServerProcedureManager.class.getName();<a name="line.141"></a> -<span class="sourceLineNo">142</span> if (classes == null) {<a name="line.142"></a> -<span class="sourceLineNo">143</span> conf.set(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY, regionProcedureClass);<a name="line.143"></a> -<span class="sourceLineNo">144</span> } else if (!classes.contains(regionProcedureClass)) {<a name="line.144"></a> -<span class="sourceLineNo">145</span> conf.set(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY,<a name="line.145"></a> -<span class="sourceLineNo">146</span> classes + "," + regionProcedureClass);<a name="line.146"></a> -<span class="sourceLineNo">147</span> }<a name="line.147"></a> -<span class="sourceLineNo">148</span> String coproc = conf.get(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY);<a name="line.148"></a> -<span class="sourceLineNo">149</span> String regionObserverClass = BackupObserver.class.getName();<a name="line.149"></a> -<span class="sourceLineNo">150</span> conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,<a name="line.150"></a> -<span class="sourceLineNo">151</span> (coproc == null ? "" : coproc + ",") + regionObserverClass);<a name="line.151"></a> -<span class="sourceLineNo">152</span> if (LOG.isDebugEnabled()) {<a name="line.152"></a> -<span class="sourceLineNo">153</span> LOG.debug("Added region procedure manager: " + regionProcedureClass<a name="line.153"></a> -<span class="sourceLineNo">154</span> + ". Added region observer: " + regionObserverClass);<a name="line.154"></a> -<span class="sourceLineNo">155</span> }<a name="line.155"></a> -<span class="sourceLineNo">156</span> }<a name="line.156"></a> -<span class="sourceLineNo">157</span><a name="line.157"></a> -<span class="sourceLineNo">158</span> public static boolean isBackupEnabled(Configuration conf) {<a name="line.158"></a> -<span class="sourceLineNo">159</span> return conf.getBoolean(BackupRestoreConstants.BACKUP_ENABLE_KEY,<a name="line.159"></a> -<span class="sourceLineNo">160</span> BackupRestoreConstants.BACKUP_ENABLE_DEFAULT);<a name="line.160"></a> -<span class="sourceLineNo">161</span> }<a name="line.161"></a> -<span class="sourceLineNo">162</span><a name="line.162"></a> -<span class="sourceLineNo">163</span> /**<a name="line.163"></a> -<span class="sourceLineNo">164</span> * Get configuration<a name="line.164"></a> -<span class="sourceLineNo">165</span> * @return configuration<a name="line.165"></a> -<span class="sourceLineNo">166</span> */<a name="line.166"></a> -<span class="sourceLineNo">167</span> Configuration getConf() {<a name="line.167"></a> -<span class="sourceLineNo">168</span> return conf;<a name="line.168"></a> -<span class="sourceLineNo">169</span> }<a name="line.169"></a> -<span class="sourceLineNo">170</span><a name="line.170"></a> -<span class="sourceLineNo">171</span> /**<a name="line.171"></a> -<span class="sourceLineNo">172</span> * Stop all the work of backup.<a name="line.172"></a> -<span class="sourceLineNo">173</span> */<a name="line.173"></a> -<span class="sourceLineNo">174</span> @Override<a name="line.174"></a> -<span class="sourceLineNo">175</span> public void close() {<a name="line.175"></a> -<span class="sourceLineNo">176</span> if (systemTable != null) {<a name="line.176"></a> -<span class="sourceLineNo">177</span> try {<a name="line.177"></a> -<span class="sourceLineNo">178</span> systemTable.close();<a name="line.178"></a> -<span class="sourceLineNo">179</span> } catch (Exception e) {<a name="line.179"></a> -<span class="sourceLineNo">180</span> LOG.error(e.toString(), e);<a name="line.180"></a> -<span class="sourceLineNo">181</span> }<a name="line.181"></a> -<span class="sourceLineNo">182</span> }<a name="line.182"></a> -<span class="sourceLineNo">183</span> }<a name="line.183"></a> -<span class="sourceLineNo">184</span><a name="line.184"></a> -<span class="sourceLineNo">185</span> /**<a name="line.185"></a> -<span class="sourceLineNo">186</span> * Creates a backup info based on input backup request.<a name="line.186"></a> -<span class="sourceLineNo">187</span> * @param backupId backup id<a name="line.187"></a> -<span class="sourceLineNo">188</span> * @param type type<a name="line.188"></a> -<span class="sourceLineNo">189</span> * @param tableList table list<a name="line.189"></a> -<span class="sourceLineNo">190</span> * @param targetRootDir root dir<a name="line.190"></a> -<span class="sourceLineNo">191</span> * @param workers number of parallel workers<a name="line.191"></a> -<span class="sourceLineNo">192</span> * @param bandwidth bandwidth per worker in MB per sec<a name="line.192"></a> -<span class="sourceLineNo">193</span> * @return BackupInfo<a name="line.193"></a> -<span class="sourceLineNo">194</span> * @throws BackupException exception<a name="line.194"></a> -<span class="sourceLineNo">195</span> */<a name="line.195"></a> -<span class="sourceLineNo">196</span> public BackupInfo createBackupInfo(String backupId, BackupType type, List<TableName> tableList,<a name="line.196"></a> -<span class="sourceLineNo">197</span> String targetRootDir, int workers, long bandwidth) throws BackupException {<a name="line.197"></a> -<span class="sourceLineNo">198</span> if (targetRootDir == null) {<a name="line.198"></a> -<span class="sourceLineNo">199</span> throw new BackupException("Wrong backup request parameter: target backup root directory");<a name="line.199"></a> -<span class="sourceLineNo">200</span> }<a name="line.200"></a> -<span class="sourceLineNo">201</span><a name="line.201"></a> -<span class="sourceLineNo">202</span> if (type == BackupType.FULL && (tableList == null || tableList.isEmpty())) {<a name="line.202"></a> -<span class="sourceLineNo">203</span> // If table list is null for full backup, which means backup all tables. Then fill the table<a name="line.203"></a> -<span class="sourceLineNo">204</span> // list with all user tables from meta. 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Currently, we only reply on checking status in backup system<a name="line.238"></a> -<span class="sourceLineNo">239</span> * table. We need to consider to handle the case of orphan records in the future. 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Can not launch new backup until no ongoing backup remains.");<a name="line.260"></a> -<span class="sourceLineNo">261</span> throw new BackupException("There is ongoing backup.");<a name="line.261"></a> -<span class="sourceLineNo">262</span> }<a name="line.262"></a> -<span class="sourceLineNo">263</span> }<a name="line.263"></a> -<span class="sourceLineNo">264</span><a name="line.264"></a> -<span class="sourceLineNo">265</span> public void setBackupInfo(BackupInfo backupInfo) {<a name="line.265"></a> -<span class="sourceLineNo">266</span> this.backupInfo = backupInfo;<a name="line.266"></a> -<span class="sourceLineNo">267</span> }<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> * Get direct ancestors of the current backup.<a name="line.270"></a> -<span class="sourceLineNo">271</span> * @param backupInfo The backup info for the current backup<a name="line.271"></a> -<span class="sourceLineNo">272</span> * @return The ancestors for the current backup<a name="line.272"></a> -<span class="sourceLineNo">273</span> * @throws IOException exception<a name="line.273"></a> -<span class="sourceLineNo">274</span> */<a name="line.274"></a> -<span class="sourceLineNo">275</span> public ArrayList<BackupImage> getAncestors(BackupInfo backupInfo) throws IOException {<a name="line.275"></a> -<span class="sourceLineNo">276</span> LOG.debug("Getting the direct ancestors of the current backup " + backupInfo.getBackupId());<a name="line.276"></a> -<span class="sourceLineNo">277</span><a name="line.277"></a> -<span class="sourceLineNo">278</span> ArrayList<BackupImage> ancestors = new ArrayList<>();<a name="line.278"></a> -<span class="sourceLineNo">279</span><a name="line.279"></a> -<span class="sourceLineNo">280</span> // full backup does not have ancestor<a name="line.280"></a> -<span class="sourceLineNo">281</span> if (backupInfo.getType() == BackupType.FULL) {<a name="line.281"></a> -<span class="sourceLineNo">282</span> LOG.debug("Current backup is a full backup, no direct ancestor for it.");<a name="line.282"></a> -<span class="sourceLineNo">283</span> return ancestors;<a name="line.283"></a> -<span class="sourceLineNo">284</span> }<a name="line.284"></a> +<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.backup.BackupHFileCleaner;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.backup.BackupInfo;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.backup.BackupInfo.BackupState;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.backup.BackupObserver;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.backup.BackupRestoreConstants;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.backup.BackupType;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.backup.HBackupFileSystem;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.backup.impl.BackupManifest.BackupImage;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.backup.master.BackupLogCleaner;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.backup.master.LogRollMasterProcedureManager;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.backup.regionserver.LogRollRegionServerProcedureManager;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.master.cleaner.HFileCleaner;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.procedure.ProcedureManagerHost;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.slf4j.Logger;<a name="line.54"></a> +<span class="sourceLineNo">055</span>import org.slf4j.LoggerFactory;<a name="line.55"></a> +<span class="sourceLineNo">056</span><a name="line.56"></a> +<span class="sourceLineNo">057</span>/**<a name="line.57"></a> +<span class="sourceLineNo">058</span> * Handles backup requests, creates backup info records in backup system table to keep track of<a name="line.58"></a> +<span class="sourceLineNo">059</span> * backup sessions, dispatches backup request.<a name="line.59"></a> +<span class="sourceLineNo">060</span> */<a name="line.60"></a> +<span class="sourceLineNo">061</span>@InterfaceAudience.Private<a name="line.61"></a> +<span class="sourceLineNo">062</span>public class BackupManager implements Closeable {<a name="line.62"></a> +<span class="sourceLineNo">063</span> // in seconds<a name="line.63"></a> +<span class="sourceLineNo">064</span> public final static String BACKUP_EXCLUSIVE_OPERATION_TIMEOUT_SECONDS_KEY =<a name="line.64"></a> +<span class="sourceLineNo">065</span> "hbase.backup.exclusive.op.timeout.seconds";<a name="line.65"></a> +<span class="sourceLineNo">066</span> // In seconds<a name="line.66"></a> +<span class="sourceLineNo">067</span> private final static int DEFAULT_BACKUP_EXCLUSIVE_OPERATION_TIMEOUT = 3600;<a name="line.67"></a> +<span class="sourceLineNo">068</span> private static final Logger LOG = LoggerFactory.getLogger(BackupManager.class);<a name="line.68"></a> +<span class="sourceLineNo">069</span><a name="line.69"></a> +<span class="sourceLineNo">070</span> protected Configuration conf = null;<a name="line.70"></a> +<span class="sourceLineNo">071</span> protected BackupInfo backupInfo = null;<a name="line.71"></a> +<span class="sourceLineNo">072</span> protected BackupSystemTable systemTable;<a name="line.72"></a> +<span class="sourceLineNo">073</span> protected final Connection conn;<a name="line.73"></a> +<span class="sourceLineNo">074</span><a name="line.74"></a> +<span class="sourceLineNo">075</span> /**<a name="line.75"></a> +<span class="sourceLineNo">076</span> * Backup manager constructor.<a name="line.76"></a> +<span class="sourceLineNo">077</span> * @param conn connection<a name="line.77"></a> +<span class="sourceLineNo">078</span> * @param conf configuration<a name="line.78"></a> +<span class="sourceLineNo">079</span> * @throws IOException exception<a name="line.79"></a> +<span class="sourceLineNo">080</span> */<a name="line.80"></a> +<span class="sourceLineNo">081</span> public BackupManager(Connection conn, Configuration conf) throws IOException {<a name="line.81"></a> +<span class="sourceLineNo">082</span> if (!conf.getBoolean(BackupRestoreConstants.BACKUP_ENABLE_KEY,<a name="line.82"></a> +<span class="sourceLineNo">083</span> BackupRestoreConstants.BACKUP_ENABLE_DEFAULT)) {<a name="line.83"></a> +<span class="sourceLineNo">084</span> throw new BackupException("HBase backup is not enabled. Check your "<a name="line.84"></a> +<span class="sourceLineNo">085</span> + BackupRestoreConstants.BACKUP_ENABLE_KEY + " setting.");<a name="line.85"></a> +<span class="sourceLineNo">086</span> }<a name="line.86"></a> +<span class="sourceLineNo">087</span> this.conf = conf;<a name="line.87"></a> +<span class="sourceLineNo">088</span> this.conn = conn;<a name="line.88"></a> +<span class="sourceLineNo">089</span> this.systemTable = new BackupSystemTable(conn);<a name="line.89"></a> +<span class="sourceLineNo">090</span> }<a name="line.90"></a> +<span class="sourceLineNo">091</span><a name="line.91"></a> +<span class="sourceLineNo">092</span> /**<a name="line.92"></a> +<span class="sourceLineNo">093</span> * Returns backup info<a name="line.93"></a> +<span class="sourceLineNo">094</span> */<a name="line.94"></a> +<span class="sourceLineNo">095</span> protected BackupInfo getBackupInfo() {<a name="line.95"></a> +<span class="sourceLineNo">096</span> return backupInfo;<a name="line.96"></a> +<span class="sourceLineNo">097</span> }<a name="line.97"></a> +<span class="sourceLineNo">098</span><a name="line.98"></a> +<span class="sourceLineNo">099</span> /**<a name="line.99"></a> +<span class="sourceLineNo">100</span> * This method modifies the master's configuration in order to inject backup-related features<a name="line.100"></a> +<span class="sourceLineNo">101</span> * (TESTs only)<a name="line.101"></a> +<span class="sourceLineNo">102</span> * @param conf configuration<a name="line.102"></a> +<span class="sourceLineNo">103</span> */<a name="line.103"></a> +<span class="sourceLineNo">104</span> @VisibleForTesting<a name="line.104"></a> +<span class="sourceLineNo">105</span> public static void decorateMasterConfiguration(Configuration conf) {<a name="line.105"></a> +<span class="sourceLineNo">106</span> if (!isBackupEnabled(conf)) {<a name="line.106"></a> +<span class="sourceLineNo">107</span> return;<a name="line.107"></a> +<span class="sourceLineNo">108</span> }<a name="line.108"></a> +<span class="sourceLineNo">109</span> // Add WAL archive cleaner plug-in<a name="line.109"></a> +<span class="sourceLineNo">110</span> String plugins = conf.get(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS);<a name="line.110"></a> +<span class="sourceLineNo">111</span> String cleanerClass = BackupLogCleaner.class.getCanonicalName();<a name="line.111"></a> +<span class="sourceLineNo">112</span> if (!plugins.contains(cleanerClass)) {<a name="line.112"></a> +<span class="sourceLineNo">113</span> conf.set(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS, plugins + "," + cleanerClass);<a name="line.113"></a> +<span class="sourceLineNo">114</span> }<a name="line.114"></a> +<span class="sourceLineNo">115</span><a name="line.115"></a> +<span class="sourceLineNo">116</span> String classes = conf.get(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY);<a name="line.116"></a> +<span class="sourceLineNo">117</span> String masterProcedureClass = LogRollMasterProcedureManager.class.getName();<a name="line.117"></a> +<span class="sourceLineNo">118</span> if (classes == null) {<a name="line.118"></a> +<span class="sourceLineNo">119</span> conf.set(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY, masterProcedureClass);<a name="line.119"></a> +<span class="sourceLineNo">120</span> } else if (!classes.contains(masterProcedureClass)) {<a name="line.120"></a> +<span class="sourceLineNo">121</span> conf.set(ProcedureManagerHost.MASTER_PROCEDURE_CONF_KEY,<a name="line.121"></a> +<span class="sourceLineNo">122</span> classes + "," + masterProcedureClass);<a name="line.122"></a> +<span class="sourceLineNo">123</span> }<a name="line.123"></a> +<span class="sourceLineNo">124</span><a name="line.124"></a> +<span class="sourceLineNo">125</span> plugins = conf.get(HFileCleaner.MASTER_HFILE_CLEANER_PLUGINS);<a name="line.125"></a> +<span class="sourceLineNo">126</span> conf.set(HFileCleaner.MASTER_HFILE_CLEANER_PLUGINS, (plugins == null ? "" : plugins + ",") +<a name="line.126"></a> +<span class="sourceLineNo">127</span> BackupHFileCleaner.class.getName());<a name="line.127"></a> +<span class="sourceLineNo">128</span> if (LOG.isDebugEnabled()) {<a name="line.128"></a> +<span class="sourceLineNo">129</span> LOG.debug("Added log cleaner: {}. Added master procedure manager: {}."<a name="line.129"></a> +<span class="sourceLineNo">130</span> +"Added master procedure manager: {}", cleanerClass, masterProcedureClass,<a name="line.130"></a> +<span class="sourceLineNo">131</span> BackupHFileCleaner.class.getName());<a name="line.131"></a> +<span class="sourceLineNo">132</span> }<a name="line.132"></a> +<span class="sourceLineNo">133</span> }<a name="line.133"></a> +<span class="sourceLineNo">134</span><a name="line.134"></a> +<span class="sourceLineNo">135</span> /**<a name="line.135"></a> +<span class="sourceLineNo">136</span> * This method modifies the Region Server configuration in order to inject backup-related features<a name="line.136"></a> +<span class="sourceLineNo">137</span> * TESTs only.<a name="line.137"></a> +<span class="sourceLineNo">138</span> * @param conf configuration<a name="line.138"></a> +<span class="sourceLineNo">139</span> */<a name="line.139"></a> +<span class="sourceLineNo">140</span> @VisibleForTesting<a name="line.140"></a> +<span class="sourceLineNo">141</span> public static void decorateRegionServerConfiguration(Configuration conf) {<a name="line.141"></a> +<span class="sourceLineNo">142</span> if (!isBackupEnabled(conf)) {<a name="line.142"></a> +<span class="sourceLineNo">143</span> return;<a name="line.143"></a> +<span class="sourceLineNo">144</span> }<a name="line.144"></a> +<span class="sourceLineNo">145</span><a name="line.145"></a> +<span class="sourceLineNo">146</span> String classes = conf.get(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY);<a name="line.146"></a> +<span class="sourceLineNo">147</span> String regionProcedureClass = LogRollRegionServerProcedureManager.class.getName();<a name="line.147"></a> +<span class="sourceLineNo">148</span> if (classes == null) {<a name="line.148"></a> +<span class="sourceLineNo">149</span> conf.set(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY, regionProcedureClass);<a name="line.149"></a> +<span class="sourceLineNo">150</span> } else if (!classes.contains(regionProcedureClass)) {<a name="line.150"></a> +<span class="sourceLineNo">151</span> conf.set(ProcedureManagerHost.REGIONSERVER_PROCEDURE_CONF_KEY,<a name="line.151"></a> +<span class="sourceLineNo">152</span> classes + "," + regionProcedureClass);<a name="line.152"></a> +<span class="sourceLineNo">153</span> }<a name="line.153"></a> +<span class="sourceLineNo">154</span> String coproc = conf.get(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY);<a name="line.154"></a> +<span class="sourceLineNo">155</span> String regionObserverClass = BackupObserver.class.getName();<a name="line.155"></a> +<span class="sourceLineNo">156</span> conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,<a name="line.156"></a> +<span class="sourceLineNo">157</span> (coproc == null ? "" : coproc + ",") + regionObserverClass);<a name="line.157"></a> +<span class="sourceLineNo">158</span> if (LOG.isDebugEnabled()) {<a name="line.158"></a> +<span class="sourceLineNo">159</span> LOG.debug("Added region procedure manager: {}. Added region observer: {}",<a name="line.159"></a> +<span class="sourceLineNo">160</span> regionProcedureClass, regionObserverClass);<a name="line.160"></a> +<span class="sourceLineNo">161</span> }<a name="line.161"></a> +<span class="sourceLineNo">162</span> }<a name="line.162"></a> +<span class="sourceLineNo">163</span><a name="line.163"></a> +<span class="sourceLineNo">164</span> public static boolean isBackupEnabled(Configuration conf) {<a name="line.164"></a> +<span class="sourceLineNo">165</span> return conf.getBoolean(BackupRestoreConstants.BACKUP_ENABLE_KEY,<a name="line.165"></a> +<span class="sourceLineNo">166</span> BackupRestoreConstants.BACKUP_ENABLE_DEFAULT);<a name="line.166"></a> +<span class="sourceLineNo">167</span> }<a name="line.167"></a> +<span class="sourceLineNo">168</span><a name="line.168"></a> +<span class="sourceLineNo">169</span> /**<a name="line.169"></a> +<span class="sourceLineNo">170</span> * Get configuration<a name="line.170"></a> +<span class="sourceLineNo">171</span> * @return configuration<a name="line.171"></a> +<span class="sourceLineNo">172</span> */<a name="line.172"></a> +<span class="sourceLineNo">173</span> Configuration getConf() {<a name="line.173"></a> +<span class="sourceLineNo">174</span> return conf;<a name="line.174"></a> +<span class="sourceLineNo">175</span> }<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> * Stop all the work of backup.<a name="line.178"></a> +<span class="sourceLineNo">179</span> */<a name="line.179"></a> +<span class="sourceLineNo">180</span> @Override<a name="line.180"></a> +<span class="sourceLineNo">181</span> public void close() {<a name="line.181"></a> +<span class="sourceLineNo">182</span> if (systemTable != null) {<a name="line.182"></a> +<span class="sourceLineNo">183</span> try {<a name="line.183"></a> +<span class="sourceLineNo">184</span> systemTable.close();<a name="line.184"></a> +<span class="sourceLineNo">185</span> } catch (Exception e) {<a name="line.185"></a> +<span class="sourceLineNo">186</span> LOG.error(e.toString(), e);<a name="line.186"></a> +<span class="sourceLineNo">187</span> }<a name="line.187"></a> +<span class="sourceLineNo">188</span> }<a name="line.188"></a> +<span class="sourceLineNo">189</span> }<a name="line.189"></a> +<span class="sourceLineNo">190</span><a name="line.190"></a> +<span class="sourceLineNo">191</span> /**<a name="line.191"></a> +<span class="sourceLineNo">192</span> * Creates a backup info based on input backup request.<a name="line.192"></a> +<span class="sourceLineNo">193</span> * @param backupId backup id<a name="line.193"></a> +<span class="sourceLineNo">194</span> * @param type type<a name="line.194"></a> +<span class="sourceLineNo">195</span> * @param tableList table list<a name="line.195"></a> +<span class="sourceLineNo">196</span> * @param targetRootDir root dir<a name="line.196"></a> +<span class="sourceLineNo">197</span> * @param workers number of parallel workers<a name="line.197"></a> +<span class="sourceLineNo">198</span> * @param bandwidth bandwidth per worker in MB per sec<a name="line.198"></a> +<span class="sourceLineNo">199</span> * @return BackupInfo<a name="line.199"></a> +<span class="sourceLineNo">200</span> * @throws BackupException exception<a name="line.200"></a> +<span class="sourceLineNo">201</span> */<a name="line.201"></a> +<span class="sourceLineNo">202</span> public BackupInfo createBackupInfo(String backupId, BackupType type, List<TableName> tableList,<a name="line.202"></a> +<span class="sourceLineNo">203</span> String targetRootDir, int workers, long bandwidth) throws BackupException {<a name="line.203"></a> +<span class="sourceLineNo">204</span> if (targetRootDir == null) {<a name="line.204"></a> +<span class="sourceLineNo">205</span> throw new BackupException("Wrong backup request parameter: target backup root directory");<a name="line.205"></a> +<span class="sourceLineNo">206</span> }<a name="line.206"></a> +<span class="sourceLineNo">207</span><a name="line.207"></a> +<span class="sourceLineNo">208</span> if (type == BackupType.FULL && (tableList == null || tableList.isEmpty())) {<a name="line.208"></a> +<span class="sourceLineNo">209</span> // If table list is null for full backup, which means backup all tables. Then fill the table<a name="line.209"></a> +<span class="sourceLineNo">210</span> // list with all user tables from meta. It no table available, throw the request exception.<a name="line.210"></a> +<span class="sourceLineNo">211</span> HTableDescriptor[] htds = null;<a name="line.211"></a> +<span class="sourceLineNo">212</span> try (Admin admin = conn.getAdmin()) {<a name="line.212"></a> +<span class="sourceLineNo">213</span> htds = admin.listTables();<a name="line.213"></a> +<span class="sourceLineNo">214</span> } catch (Exception e) {<a name="line.214"></a> +<span class="sourceLineNo">215</span> throw new BackupException(e);<a name="line.215"></a> +<span class="sourceLineNo">216</span> }<a name="line.216"></a> +<span class="sourceLineNo">217</span><a name="line.217"></a> +<span class="sourceLineNo">218</span> if (htds == null) {<a name="line.218"></a> +<span class="sourceLineNo">219</span> throw new BackupException("No table exists for full backup of all tables.");<a name="line.219"></a> +<span class="sourceLineNo">220</span> } else {<a name="line.220"></a> +<span class="sourceLineNo">221</span> tableList = new ArrayList<>();<a name="line.221"></a> +<span class="sourceLineNo">222</span> for (HTableDescriptor hTableDescriptor : htds) {<a name="line.222"></a> +<span class="sourceLineNo">223</span> TableName tn = hTableDescriptor.getTableName();<a name="line.223"></a> +<span class="sourceLineNo">224</span> if (tn.equals(BackupSystemTable.getTableName(conf))) {<a name="line.224"></a> +<span class="sourceLineNo">225</span> // skip backup system table<a name="line.225"></a> +<span class="sourceLineNo">226</span> continue;<a name="line.226"></a> +<span class="sourceLineNo">227</span> }<a name="line.227"></a> +<span class="sourceLineNo">228</span> tableList.add(hTableDescriptor.getTableName());<a name="line.228"></a> +<span class="sourceLineNo">229</span> }<a name="line.229"></a> +<span class="sourceLineNo">230</span><a name="line.230"></a> +<span class="sourceLineNo">231</span> LOG.info("Full backup all the tables available in the cluster: {}", tableList);<a name="line.231"></a> +<span class="sourceLineNo">232</span> }<a name="line.232"></a> +<span class="sourceLineNo">233</span> }<a name="line.233"></a> +<span class="sourceLineNo">234</span><a name="line.234"></a> +<span class="sourceLineNo">235</span> // there are one or more tables in the table list<a name="line.235"></a> +<span class="sourceLineNo">236</span> backupInfo = new BackupInfo(backupId, type, tableList.toArray(new TableName[tableList.size()]),<a name="line.236"></a> +<span class="sourceLineNo">237</span> targetRootDir);<a name="line.237"></a> +<span class="sourceLineNo">238</span> backupInfo.setBandwidth(bandwidth);<a name="line.238"></a> +<span class="sourceLineNo">239</span> backupInfo.setWorkers(workers);<a name="line.239"></a> +<span class="sourceLineNo">240</span> return backupInfo;<a name="line.240"></a> +<span class="sourceLineNo">241</span> }<a name="line.241"></a> +<span class="sourceLineNo">242</span><a name="line.242"></a> +<span class="sourceLineNo">243</span> /**<a name="line.243"></a> +<span class="sourceLineNo">244</span> * Check if any ongoing backup. Currently, we only reply on checking status in backup system<a name="line.244"></a> +<span class="sourceLineNo">245</span> * table. We need to consider to handle the case of orphan records in the future. Otherwise, all<a name="line.245"></a> +<span class="sourceLineNo">246</span> * the coming request will fail.<a name="line.246"></a> +<span class="sourceLineNo">247</span> * @return the ongoing backup id if on going backup exists, otherwise null<a name="line.247"></a> +<span class="sourceLineNo">248</span> * @throws IOException exception<a name="line.248"></a> +<span class="sourceLineNo">249</span> */<a name="line.249"></a> +<span class="sourceLineNo">250</span> private String getOngoingBackupId() throws IOException {<a name="line.250"></a> +<span class="sourceLineNo">251</span> ArrayList<BackupInfo> sessions = systemTable.getBackupInfos(BackupState.RUNNING);<a name="line.251"></a> +<span class="sourceLineNo">252</span> if (sessions.size() == 0) {<a name="line.252"></a> +<span class="sourceLineNo">253</span> return null;<a name="line.253"></a> +<span class="sourceLineNo">254</span> }<a name="line.254"></a> +<span class="sourceLineNo">255</span> return sessions.get(0).getBackupId();<a name="line.255"></a> +<span class="sourceLineNo">256</span> }<a name="line.256"></a> +<span class="sourceLineNo">257</span><a name="line.257"></a> +<span class="sourceLineNo">258</span> /**<a name="line.258"></a> +<span class="sourceLineNo">259</span> * Start the backup manager service.<a name="line.259"></a> +<span class="sourceLineNo">260</span> * @throws IOException exception<a name="line.260"></a> +<span class="sourceLineNo">261</span> */<a name="line.261"></a> +<span class="sourceLineNo">262</span> public void initialize() throws IOException {<a name="line.262"></a> +<span class="sourceLineNo">263</span> String ongoingBackupId = this.getOngoingBackupId();<a name="line.263"></a> +<span class="sourceLineNo">264</span> if (ongoingBackupId != null) {<a name="line.264"></a> +<span class="sourceLineNo">265</span> LOG.info("There is a ongoing backup {}"<a name="line.265"></a> +<span class="sourceLineNo">266</span> + ". Can not launch new backup until no ongoing backup remains.", ongoingBackupId);<a name="line.266"></a> +<span class="sourceLineNo">267</span> throw new BackupException("There is ongoing backup seesion.");<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> public void setBackupInfo(BackupInfo backupInfo) {<a name="line.271"></a> +<span class="sourceLineNo">272</span> this.backupInfo = backupInfo;<a name="line.272"></a> +<span class="sourceLineNo">273</span> }<a name="line.273"></a> +<span class="sourceLineNo">274</span><a name="line.274"></a> +<span class="sourceLineNo">275</span> /**<a name="line.275"></a> +<span class="sourceLineNo">276</span> * Get direct ancestors of the current backup.<a name="line.276"></a> +<span class="sourceLineNo">277</span> * @param backupInfo The backup info for the current backup<a name="line.277"></a> +<span class="sourceLineNo">278</span> * @return The ancestors for the current backup<a name="line.278"></a> +<span class="sourceLineNo">279</span> * @throws IOException exception<a name="line.279"></a> +<span class="sourceLineNo">280</span> */<a name="line.280"></a> +<span class="sourceLineNo">281</span> public ArrayList<BackupImage> getAncestors(BackupInfo backupInfo) throws IOException {<a name="line.281"></a> +<span class="sourceLineNo">282</span> LOG.debug("Getting the direct ancestors of the current backup {}", backupInfo.getBackupId());<a name="line.282"></a> +<span class="sourceLineNo">283</span><a name="line.283"></a> +<span class="sourceLineNo">284</span> ArrayList<BackupImage> ancestors = new ArrayList<>();<a name="line.284"></a> <span class="sourceLineNo">285</span><a name="line.285"></a> -<span class="sourceLineNo">286</span> // get all backup history list in descending order<a name="line.286"></a> -<span class="sourceLineNo">287</span> ArrayList<BackupInfo> allHistoryList = getBackupHistory(true);<a name="line.287"></a> -<span class="sourceLineNo">288</span> for (BackupInfo backup : allHistoryList) {<a name="line.288"></a> -<span class="sourceLineNo">289</span><a name="line.289"></a> -<span class="sourceLineNo">290</span> BackupImage.Builder builder = BackupImage.newBuilder();<a name="line.290"></a> +<span class="sourceLineNo">286</span> // full backup does not have ancestor<a name="line.286"></a> +<span class="sourceLineNo">287</span> if (backupInfo.getType() == BackupType.FULL) {<a name="line.287"></a> +<span class="sourceLineNo">288</span> LOG.debug("Current backup is a full backup, no direct ancestor for it.");<a name="line.288"></a> +<span class="sourceLineNo">289</span> return ancestors;<a name="line.289"></a> +<span class="sourceLineNo">290</span> }<a name="line.290"></a> <span class="sourceLineNo">291</span><a name="line.291"></a> -<span class="sourceLineNo">292</span> BackupImage image = builder.withBackupId(backup.getBackupId()).withType(backup.getType())<a name="line.292"></a> -<span class="sourceLineNo">293</span> .withRootDir(backup.getBackupRootDir()).withTableList(backup.getTableNames())<a name="line.293"></a> -<span class="sourceLineNo">294</span> .withStartTime(backup.getStartTs()).withCompleteTime(backup.getCompleteTs()).build();<a name="line.294"></a> +<span class="sourceLineNo">292</span> // get all backup history list in descending order<a name="line.292"></a> +<span class="sourceLineNo">293</span> ArrayList<BackupInfo> allHistoryList = getBackupHistory(true);<a name="line.293"></a> +<span class="sourceLineNo">294</span> for (BackupInfo backup : allHistoryList) {<a name="line.294"></a> <span class="sourceLineNo">295</span><a name="line.295"></a> -<span class="sourceLineNo">296</span> // add the full backup image as an ancestor until the last incremental backup<a name="line.296"></a> -<span class="sourceLineNo">297</span> if (backup.getType().equals(BackupType.FULL)) {<a name="line.297"></a> -<span class="sourceLineNo">298</span> // check the backup image coverage, if previous image could be covered by the newer ones,<a name="line.298"></a> -<span class="sourceLineNo">299</span> // then no need to add<a name="line.299"></a> -<span class="sourceLineNo">300</span> if (!BackupManifest.canCoverImage(ancestors, image)) {<a name="line.300"></a> -<span class="sourceLineNo">301</span> ancestors.add(image);<a name="line.301"></a> -<span class="sourceLineNo">302</span> }<a name="line.302"></a> -<span class="sourceLineNo">303</span> } else {<a name="line.303"></a> -<span class="sourceLineNo">304</span> // found last incremental backup, if previously added full backup ancestor images can cover<a name="line.304"></a> -<span class="sourceLineNo">305</span> // it, then this incremental ancestor is not the dependent of the current incremental<a name="line.305"></a> -<span class="sourceLineNo">306</span> // backup, that is to say, this is the backup scope boundary of current table set.<a name="line.306"></a> -<span class="sourceLineNo">307</span> // Otherwise, this incremental backup ancestor is the dependent ancestor of the ongoing<a name="line.307"></a> -<span class="sourceLineNo">308</span> // incremental backup<a name="line.308"></a> -<span class="sourceLineNo">309</span> if (BackupManifest.canCoverImage(ancestors, image)) {<a name="line.309"></a> -<span class="sourceLineNo">310</span> LOG.debug("Met the backup boundary of the current table set:");<a name="line.310"></a> -<span class="sourceLineNo">311</span> for (BackupImage image1 : ancestors) {<a name="line.311"></a> -<span class="sourceLineNo">312</span> LOG.debug(" BackupID=" + image1.getBackupId() + ", BackupDir=" + image1.getRootDir());<a name="line.312"></a> -<span class="sourceLineNo">313</span> }<a name="line.313"></a> -<span class="sourceLineNo">314</span> } else {<a name="line.314"></a> -<span class="sourceLineNo">315</span> Path logBackupPath =<a name="line.315"></a> -<span class="sourceLineNo">316</span> HBackupFileSystem.getBackupPath(backup.getBackupRootDir(), backup.getBackupId());<a name="line.316"></a> -<span class="sourceLineNo">317</span> LOG.debug("Current backup has an incremental backup ancestor, "<a name="line.317"></a> -<span class="sourceLineNo">318</span> + "touching its image manifest in " + logBackupPath.toString()<a name="line.318"></a> -<span class="sourceLineNo">319</span> + " to construct the dependency.");<a name="line.319"></a> -<span class="sourceLineNo">320</span> BackupManifest lastIncrImgManifest = new BackupManifest(conf, logBackupPath);<a name="line.320"></a> -<span class="sourceLineNo">321</span> BackupImage lastIncrImage = lastIncrImgManifest.getBackupImage();<a name="line.321"></a> -<span class="sourceLineNo">322</span> ancestors.add(lastIncrImage);<a name="line.322"></a> -<span class="sourceLineNo">323</span><a name="line.323"></a> -<span class="sourceLineNo">324</span> LOG.debug(<a name="line.324"></a> -<span class="sourceLineNo">325</span> "Last dependent incremental backup image: " + "{BackupID=" + lastIncrImage.getBackupId()<a name="line.325"></a> -<span class="sourceLineNo">326</span> + "," + "BackupDir=" + lastIncrImage.getRootDir() + "}");<a name="line.326"></a> -<span class="sourceLineNo">327</span> }<a name="line.327"></a> -<span class="sourceLineNo">328</span> }<a name="line.328"></a> -<span class="sourceLineNo">329</span> }<a name="line.329"></a> -<span class="sourceLineNo">330</span> LOG.debug("Got " + ancestors.size() + " ancestors for the current backup.");<a name="line.330"></a> -<span class="sourceLineNo">331</span> return ancestors;<a name="line.331"></a> -<span class="sourceLineNo">332</span> }<a name="line.332"></a> -<span class="sourceLineNo">333</span><a name="line.333"></a> -<span class="sourceLineNo">334</span> /**<a name="line.334"></a> -<span class="sourceLineNo">335</span> * Get the direct ancestors of this backup for one table involved.<a name="line.335"></a> -<span class="sourceLineNo">336</span> * @param backupInfo backup info<a name="line.336"></a> -<span class="sourceLineNo">337</span> * @param table table<a name="line.337"></a> -<span class="sourceLineNo">338</span> * @return backupImages on the dependency list<a name="line.338"></a> -<span class="sourceLineNo">339</span> * @throws IOException exception<a name="line.339"></a> -<span class="sourceLineNo">340</span> */<a name="line.340"></a> -<span class="sourceLineNo">341</span> public ArrayList<BackupImage> getAncestors(BackupInfo backupInfo, TableName table)<a name="line.341"></a> -<span class="sourceLineNo">342</span> throws IOException {<a name="line.342"></a> -<span class="sourceLineNo">343</span> ArrayList<BackupImage> ancestors = getAncestors(backupInfo);<a name="line.343"></a> -<span class="sourceLineNo">344</span> ArrayList<BackupImage> tableAncestors = new ArrayList<>();<a name="line.344"></a> -<span class="sourceLineNo">345</span> for (BackupImage image : ancestors) {<a name="line.345"></a> -<span class="sourceLineNo">346</span> if (image.hasTable(table)) {<a name="line.346"></a> -<span class="sourceLineNo">347</span> tableAncestors.add(image);<a name="line.347"></a> -<span class="sourceLineNo">348</span> if (image.getType() == BackupType.FULL) {<a name="line.348"></a> -<span class="sourceLineNo">349</span> break;<a name="line.349"></a> -<span class="sourceLineNo">350</span> }<a name="line.350"></a> -<span class="sourceLineNo">351</span> }<a name="line.351"></a> -<span class="sourceLineNo">352</span> }<a name="line.352"></a> -<span class="sourceLineNo">353</span> return tableAncestors;<a name="line.353"></a> -<span class="sourceLineNo">354</span> }<a name="line.354"></a> -<span class="sourceLineNo">355</span><a name="line.355"></a> -<span class="sourceLineNo">356</span> /*<a name="line.356"></a> -<span class="sourceLineNo">357</span> * backup system table operations<a name="line.357"></a> -<span class="sourceLineNo">358</span> */<a name="line.358"></a> -<span class="sourceLineNo">359</span><a name="line.359"></a> -<span class="sourceLineNo">360</span> /**<a name="line.360"></a> -<span class="sourceLineNo">361</span> * Updates status (state) of a backup session in a persistent store<a name="line.361"></a> -<span class="sourceLineNo">362</span> * @param context context<a name="line.362"></a> -<span class="sourceLineNo">363</span> * @throws IOException exception<a name="line.363"></a> +<span class="sourceLineNo">296</span> BackupImage.Builder builder = BackupImage.newBuilder();<a name="line.296"></a> +<span class="sourceLineNo">297</span><a name="line.297"></a> +<span class="sourceLineNo">298</span> BackupImage image = builder.withBackupId(backup.getBackupId()).withType(backup.getType())<a name="line.298"></a> +<span class="sourceLineNo">299</span> .withRootDir(backup.getBackupRootDir()).withTableList(backup.getTableNames())<a name="line.299"></a> +<span class="sourceLineNo">300</span> .withStartTime(backup.getStartTs()).withCompleteTime(backup.getCompleteTs()).build();<a name="line.300"></a> +<span class="sourceLineNo">301</span><a name="line.301"></a> +<span class="sourceLineNo">302</span> // add the full backup image as an ancestor until the last incremental backup<a name="line.302"></a> +<span class="sourceLineNo">303</span> if (backup.getType().equals(BackupType.FULL)) {<a name="line.303"></a> +<span class="sourceLineNo">304</span> // check the backup image coverage, if previous image could be covered by the newer ones,<a name="line.304"></a> +<span class="sourceLineNo">305</span> // then no need to add<a name="line.305"></a> +<span class="sourceLineNo">306</span> if (!BackupManifest.canCoverImage(ancestors, image)) {<a name="line.306"></a> +<span class="sourceLineNo">307</span> ancestors.add(image);<a name="line.307"></a> +<span class="sourceLineNo">308</span> }<a name="line.308"></a> +<span class="sourceLineNo">309</span> } else {<a name="line.309"></a> +<span class="sourceLineNo">310</span> // found last incremental backup, if previously added full backup ancestor images can cover<a name="line.310"></a> +<span class="sourceLineNo">311</span> // it, then this incremental ancestor is not the dependent of the current incremental<a name="line.311"></a> +<span class="sourceLineNo">312</span> // backup, that is to say, this is the backup scope boundary of current table set.<a name="line.312"></a> +<span class="sourceLineNo">313</span> // Otherwise, this incremental backup ancestor is the dependent ancestor of the ongoing<a name="line.313"></a> +<span class="sourceLineNo">314</span> // incremental backup<a name="line.314"></a> +<span class="sourceLineNo">315</span> if (BackupManifest.canCoverImage(ancestors, image)) {<a name="line.315"></a> +<span class="sourceLineNo">316</span> LOG.debug("Met the backup boundary of the current table set:");<a name="line.316"></a> +<span class="sourceLineNo">317</span> for (BackupImage image1 : ancestors) {<a name="line.317"></a> +<span class="sourceLineNo">318</span> LOG.debug(" BackupID={}, BackupDir={}", image1.getBackupId(), image1.getRootDir());<a name="line.318"></a> +<span class="sourceLineNo">319</span> }<a name="line.319"></a> +<span class="sourceLineNo">320</span> } else {<a name="line.320"></a> +<span class="sourceLineNo">321</span> Path logBackupPath =<a name="line.321"></a> +<span class="sourceLineNo">322</span> HBackupFileSystem.getBackupPath(backup.getBackupRootDir(), backup.getBackupId());<a name="line.322"></a> +<span class="sourceLineNo">323</span> LOG.debug("Current backup has an incremental backup ancestor, "<a name="line.323"></a> +<span class="sourceLineNo">324</span> + "touching its image manifest in {}"<a name="line.324"></a> +<span class="sourceLineNo">325</span> + " to construct the dependency.", logBackupPath.toString());<a name="line.325"></a> +<span class="sourceLineNo">326</span> BackupManifest lastIncrImgManifest = new BackupManifest(conf, logBackupPath);<a name="line.326"></a> +<span class="sourceLineNo">327</span> BackupImage lastIncrImage = lastIncrImgManifest.getBackupImage();<a name="line.327"></a> +<span class="sourceLineNo">328</span> ancestors.add(lastIncrImage);<a name="line.328"></a> +<span class="sourceLineNo">329</span><a name="line.329"></a> +<span class="sourceLineNo">330</span> LOG.debug(<a name="line.330"></a> +<span class="sourceLineNo">331</span> "Last dependent incremental backup image: {BackupID={}" +<a name="line.331"></a> +<span class="sourceLineNo">332</span> "BackupDir={}}", lastIncrImage.getBackupId(), lastIncrImage.getRootDir());<a name="line.332"></a> +<span class="sourceLineNo">333</span> }<a name="line.333"></a> +<span class="sourceLineNo">334</span> }<a name="line.334"></a> +<span class="sourceLineNo">335</span> }<a name="line.335"></a> +<span class="sourceLineNo">336</span> LOG.debug("Got {} ancestors for the current backup.", ancestors.size());<a name="line.336"></a> +<span class="sourceLineNo">337</span> return ancestors;<a name="line.337"></a> +<span class="sourceLineNo">338</span> }<a name="line.338"></a> +<span class="sourceLineNo">339</span><a name="line.339"></a> +<span class="sourceLineNo">340</span> /**<a name="line.340"></a> +<span class="sourceLineNo">341</span> * Get the direct ancestors of this backup for one table involved.<a name="line.341"></a> +<span class="sourceLineNo">342</span> * @param backupInfo backup info<a name="line.342"></a> +<span class="sourceLineNo">343</span> * @param table table<a name="line.343"></a> +<span class="sourceLineNo">344</span> * @return backupImages on the dependency list<a name="line.344"></a> +<span class="sourceLineNo">345</span> * @throws IOException exception<a name="line.345"></a> +<span class="sourceLineNo">346</span> */<a name="line.346"></a> +<span class="sourceLineNo">347</span> public ArrayList<BackupImage> getAncestors(BackupInfo backupInfo, TableName table)<a name="line.347"></a> +<span class="sourceLineNo">348</span> throws IOException {<a name="line.348"></a> +<span class="sourceLineNo">349</span> ArrayList<BackupImage> ancestors = getAncestors(backupInfo);<a name="line.349"></a> +<span class="sourceLineNo">350</span> ArrayList<BackupImage> tableAncestors = new ArrayList<>();<a name="line.350"></a> +<span class="sourceLineNo">351</span> for (BackupImage image : ancestors) {<a name="line.351"></a> +<span class="sourceLineNo">352</span> if (image.hasTable(table)) {<a name="line.352"></a> +<span class="sourceLineNo">353</span> tableAncestors.add(image);<a name="line.353"></a> +<span class="sourceLineNo">354</span> if (image.getType() == BackupType.FULL) {<a name="line.354"></a> +<span class="sourceLineNo">355</span> break;<a name="line.355"></a> +<span class="sourceLineNo">356</span> }<a name="line.356"></a> +<span class="sourceLineNo">357</span> }<a name="line.357"></a> +<span class="sourceLineNo">358</span> }<a name="line.358"></a> +<span class="sourceLineNo">359</span> return tableAncestors;<a name="line.359"></a> +<span class="sourceLineNo">360</span> }<a name="line.360"></a> +<span class="sourceLineNo">361</span><a name="line.361"></a> +<span class="sourceLineNo">362</span> /*<a name="line.362"></a> +<span class="sourceLineNo">363</span> * backup system table operations<a name="line.363"></a> <span class="sourceLineNo">364</span> */<a name="line.364"></a> -<span class="sourceLineNo">365</span> public void updateBackupInfo(BackupInfo context) throws IOException {<a name="line.365"></a> -<span class="sourceLineNo">366</span> systemTable.updateBackupInfo(context);<a name="line.366"></a> -<span class="sourceLineNo">367</span> }<a name="line.367"></a> -<span class="sourceLineNo">368</span><a name="line.368"></a> -<span class="sourceLineNo">369</span> /**<a name="line.369"></a> -<span class="sourceLineNo">370</span> * Starts new backup session<a name="line.370"></a> -<span class="sourceLineNo">371</span> * @throws IOException if active session already exists<a name="line.371"></a> -<span class="sourceLineNo">372</span> */<a name="line.372"></a> -<span class="sourceLineNo">373</span> public void startBackupSession() throws IOException {<a name="line.373"></a> -<span class="sourceLineNo">374</span> long startTime = System.currentTimeMillis();<a name="line.374"></a> -<span class="sourceLineNo">375</span> long timeout = conf.getInt(BACKUP_EXCLUSIVE_OPERATION_TIMEOUT_SECONDS_KEY,<a name="line.375"></a> -<span class="sourceLineNo">376</span> DEFAULT_BACKUP_EXCLUSIVE_OPERATION_TIMEOUT) * 1000L;<a name="line.376"></a> -<span class="sourceLineNo">377</span> long lastWarningOutputTime = 0;<a name="line.377"></a> -<span class="sourceLineNo">378</span> while (System.currentTimeMillis() - startTime < timeout) {<a name="line.378"></a> -<span class="sourceLineNo">379</span> try {<a name="line.379"></a> -<span class="sourceLineNo">380</span> systemTable.startBackupExclusiveOperation();<a name="line.380"></a> -<span class="sourceLineNo">381</span> return;<a name="line.381"></a> -<span class="sourceLineNo">382</span> } catch (IOException e) {<a name="line.382"></a> -<span class="sourceLineNo">383</span> if (e instanceof ExclusiveOperationException) {<a name="line.383"></a> -<span class="sourceLineNo">384</span> // sleep, then repeat<a name="line.384"></a> -<span class="sourceLineNo">385</span> try {<a name="line.385"></a> -<span class="sourceLineNo">386</span> Thread.sleep(1000);<a name="line.386"></a> -<span class="sourceLineNo">387</span> } catch (InterruptedException e1) {<a name="line.387"></a> -<span class="sourceLineNo">388</span> // Restore the interrupted status<a name="line.388"></a> -<span class="sourceLineNo">389</span> Thread.currentThread().interrupt();<a name="line.389"></a> -<span class="sourceLineNo">390</span> }<a name="line.390"></a> -<span class="sourceLineNo">391</span> if (lastWarningOutputTime == 0<a name="line.391"></a> -<span class="sourceLineNo">392</span> || (System.currentTimeMillis() - lastWarningOutputTime) > 60000) {<a name="line.392"></a> -<span class="sourceLineNo">393</span> lastWarningOutputTime = System.currentTimeMillis();<a name="line.393"></a> -<span class="sourceLineNo">394</span> LOG.warn("Waiting to acquire backup exclusive lock for "<a name="line.394"></a> -<span class="sourceLineNo">395</span> + (lastWarningOutputTime - startTime) / 1000 + "s");<a name="line.395"></a> +<span class="sourceLineNo">365</span><a name="line.365"></a> +<span class="sourceLineNo">366</span> /**<a name="line.366"></a> +<span class="sourceLineNo">367</span> * Updates status (state) of a backup session in a persistent store<a name="line.367"></a> +<span class="sourceLineNo">368</span> * @param context context<a name="line.368"></a> +<span class="sourceLineNo">369</span> * @throws IOException exception<a name="line.369"></a> +<span class="sourceLineNo">370</span> */<a name="line.370"></a> +<span class="sourceLineNo">371</span> public void updateBackupInfo(BackupInfo context) throws IOException {<a name="line.371"></a> +<span class="sourceLineNo">372</span> systemTable.updateBackupInfo(context);<a name="line.372"></a> +<span class="sourceLineNo">373</span> }<a name="line.373"></a> +<span class="sourceLineNo">374</span><a name="line.374"></a> +<span class="sourceLineNo">375</span> /**<a name="line.375"></a> +<span class="sourceLineNo">376</span> * Starts new backup session<a name="line.376"></a> +<span class="sourceLineNo">377</span> * @throws IOException if active session already exists<a name="line.377"></a> +<span class="sourceLineNo">378</span> */<a name="line.378"></a> +<span class="sourceLineNo">379</span> public void startBackupSession() throws IOException {<a name="line.379"></a> +<span class="sourceLineNo">380</span> long startTime = System.currentTimeMillis();<a name="line.380"></a> +<span class="sourceLineNo">381</span> long timeout = conf.getInt(BACKUP_EXCLUSIVE_OPERATION_TIMEOUT_SECONDS_KEY,<a name="line.381"></a> +<span class="sourceLineNo">382</span> DEFAULT_BACKUP_EXCLUSIVE_OPERATION_TIMEOUT) * 1000L;<a name="line.382"></a> +<span class="sourceLineNo">383</span> long lastWarningOutputTime = 0;<a name="line.383"></a> +<span class="sourceLineNo">384</span> while (System.currentTimeMillis() - startTime < timeout) {<a name="line.384"></a> +<span class="sourceLineNo">385</span> try {<a name="line.385"></a> +<span class="sourceLineNo">386</span> systemTable.startBackupExclusiveOperation();<a name="line.386"></a> +<span class="sourceLineNo">387</span> return;<a name="line.387"></a> +<span class="sourceLineNo">388</span> } catch (IOException e) {<a name="line.388"></a> +<span class="sourceLineNo">389</span> if (e instanceof ExclusiveOperationException) {<a name="line.389"></a> +<span class="sourceLineNo">390</span> // sleep, then repeat<a name="line.390"></a> +<span class="sourceLineNo">391</span> try {<a name="line.391"></a> +<span class="sourceLineNo">392</span> 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Will return null if<a name="line.415"></a> -<span class="sourceLineNo">416</span> * there is no startcode stored in backup system table or the value is of length 0. These two<a name="line.416"></a> -<span class="sourceLineNo">417</span> * cases indicate there is no successful backup completed so far.<a name="line.417"></a> -<span class="sourceLineNo">418</span> * @return the timestamp of a last successful backup<a name="line.418"></a> -<span class="sourceLineNo">419</span> * @throws IOException exception<a name="line.419"></a> -<span class="sourceLineNo">420</span> */<a name="line.420"></a> -<span class="sourceLineNo">421</span> public String readBackupStartCode() throws IOException {<a name="line.421"></a> -<span class="sourceLineNo">422</span> return systemTable.readBackupStartCode(backupInfo.getBackupRootDir());<a name="line.422"></a> -<span class="sourceLineNo">423</span> }<a name="line.423"></a> -<span class="sourceLineNo">424</span><a name="line.424"></a> -<span class="sourceLineNo">425</span> /**<a name="line.425"></a> -<span class="sourceLineNo">426</span> * Write the start code (timestamp) to backup system table. 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These files will be stored until<a name="line.507"></a> -<span class="sourceLineNo">508</span> * TTL expiration and are used by Backup Log Cleaner plug-in to determine which WAL files can be<a name="line.508"></a> -<span class="sourceLineNo">509</span> * safely purged.<a name="line.509"></a> -<span class="sourceLineNo">510</span> */<a name="line.510"></a> -<span class="sourceLineNo">511</span> public void recordWALFiles(List<String> files) throws IOException {<a name="line.511"></a> -<span class="sourceLineNo">512</span> systemTable.addWALFiles(files, backupInfo.getBackupId(), backupInfo.getBackupRootDir());<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> * Get WAL files iterator.<a name="line.516"></a> -<span class="sourceLineNo">517</span> * @return WAL files iterator from backup system table<a name="line.517"></a> -<span class="sourceLineNo">518</span> * @throws IOException if getting the WAL files iterator fails<a name="line.518"></a> -<span class="sourceLineNo">519</span> */<a name="line.519"></a> -<span class="sourceLineNo">520</span> public Iterator<BackupSystemTable.WALItem> getWALFilesFromBackupSystem() throws IOException {<a name="line.520"></a> -<span class="sourceLineNo">521</span> return systemTable.getWALFilesIterator(backupInfo.getBackupRootDir());<a name="line.521"></a> -<span class="sourceLineNo">522</span> }<a name="line.522"></a> -<span class="sourceLineNo">523</span><a name="line.523"></a> -<span class="sourceLineNo">524</span> public Connection getConnection() {<a name="line.524"></a> -<span class="sourceLineNo">525</span> return conn;<a name="line.525"></a> -<span class="sourceLineNo">526</span> }<a name="line.526"></a> -<span class="sourceLineNo">527</span>}<a name="line.527"></a> +<span class="sourceLineNo">397</span> if (lastWarningOutputTime == 0<a name="line.397"></a> +<span class="sourceLineNo">398</span> || (System.currentTimeMillis() - lastWarningOutputTime) > 60000) {<a name="line.398"></a> +<span class="sourceLineNo">399</span> lastWarningOutputTime = System.currentTimeMillis();<a name="line.399"></a> +<span class="sourceLineNo">400</span> LOG.warn("Waiting to acquire backup exclusive lock for {}s",<a name="line.400"></a> +<span class="sourceLineNo">401</span> +(lastWarningOutputTime - startTime) / 1000);<a name="line.401"></a> +<span class="sourceLineNo">402</span> }<a name="line.402"></a> +<span class="sourceLineNo">403</span> } else {<a name="line.403"></a> +<span class="sourceLineNo">404</span> throw e;<a name="line.404"></a> +<span class="sourceLineNo">405</span> }<a name="line.405"></a> +<span class="sourceLineNo">406</span> }<a name="line.406"></a> +<span class="sourceLineNo">407</span> }<a name="line.407"></a> +<span class="sourceLineNo">408</span> throw new IOException(<a name="line.408"></a> +<span class="sourceLineNo">409</span> "Failed to acquire backup system table exclusive lock after " + timeout / 1000 + "s");<a name="line.409"></a> +<span class="sourceLineNo">410</span> }<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> * Finishes active backup session<a name="line.413"></a> +<span class="sourceLineNo">414</span> * @throws IOException if no active session<a name="line.414"></a> +<span class="sourceLineNo">415</span> */<a name="line.415"></a> +<span class="sourceLineNo">416</span> public void finishBackupSession() throws IOException {<a name="line.416"></a> +<span class="sourceLineNo">417</span> systemTable.finishBackupExclusiveOperation();<a name="line.417"></a> +<span class="sourceLineNo">418</span> }<a name="line.418"></a> +<span class="sourceLineNo">419</span><a name="line.419"></a> +<span class="sourceLineNo">420</span> /**<a name="line.420"></a> +<span class="sourceLineNo">421</span> * Read the last backup start code (timestamp) of last successful backup. Will return null if<a name="line.421"></a> +<span class="sourceLineNo">422</span> * there is no startcode stored in backup system table or the value is of length 0. These two<a name="line.422"></a> +<span class="sourceLineNo">423</span> * cases indicate there is no successful backup completed so far.<a name="line.423"></a> +<span class="sourceLineNo">424</span> * @return the timestamp of a last successful backup<a name="line.424"></a> +<span class="sourceLineNo">425</span> * @throws IOException exception<a name="line.425"></a> +<span class="sourceLineNo">426</span> */<a name="line.426"></a> +<span class="sourceLineNo">427</span> public String readBackupStartCode() throws IOException {<a name="line.427"></a> +<span class="sourceLineNo">428</span> return systemTable.readBackupStartCode(backupInfo.getBackupRootDir());<a name="line.428"></a> +<span class="sourceLineNo">429</span> }<a name="line.429"></a> +<span class="sourceLineNo">430</span><a name="line.430"></a> +<span class="sourceLineNo">431</span> /**<a name="line.431"></a> +<span class="sourceLineNo">432</span> * Write the start code (timestamp) to backup system table. If passed in null, then write 0 byte.<a name="line.432"></a> +<span class="sourceLineNo">433</span> * @param startCode start code<a name="line.433"></a> +<span class="sourceLineNo">434</span> * @throws IOException exception<a name="line.434"></a> +<span class="sourceLineNo">435</span> */<a name="l
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