http://git-wip-us.apache.org/repos/asf/hbase-site/blob/bb78f24d/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.html index 094b592..5dc41f3 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.html @@ -67,840 +67,860 @@ <span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.59"></a> <span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.60"></a> <span class="sourceLineNo">061</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.61"></a> -<span class="sourceLineNo">062</span>import org.slf4j.Logger;<a name="line.62"></a> -<span class="sourceLineNo">063</span>import org.slf4j.LoggerFactory;<a name="line.63"></a> -<span class="sourceLineNo">064</span><a name="line.64"></a> -<span class="sourceLineNo">065</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.65"></a> -<span class="sourceLineNo">066</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.66"></a> -<span class="sourceLineNo">067</span><a name="line.67"></a> -<span class="sourceLineNo">068</span>/**<a name="line.68"></a> -<span class="sourceLineNo">069</span> * This class is responsible to manage all the replication sources. There are two classes of<a name="line.69"></a> -<span class="sourceLineNo">070</span> * sources:<a name="line.70"></a> -<span class="sourceLineNo">071</span> * <ul><a name="line.71"></a> -<span class="sourceLineNo">072</span> * <li>Normal sources are persistent and one per peer cluster</li><a name="line.72"></a> -<span class="sourceLineNo">073</span> * <li>Old sources are recovered from a failed region server and our only goal is to finish<a name="line.73"></a> -<span class="sourceLineNo">074</span> * replicating the WAL queue it had</li><a name="line.74"></a> -<span class="sourceLineNo">075</span> * </ul><a name="line.75"></a> -<span class="sourceLineNo">076</span> * <p><a name="line.76"></a> -<span class="sourceLineNo">077</span> * When a region server dies, this class uses a watcher to get notified and it tries to grab a lock<a name="line.77"></a> -<span class="sourceLineNo">078</span> * in order to transfer all the queues in a local old source.<a name="line.78"></a> -<span class="sourceLineNo">079</span> * <p><a name="line.79"></a> -<span class="sourceLineNo">080</span> * Synchronization specification:<a name="line.80"></a> -<span class="sourceLineNo">081</span> * <ul><a name="line.81"></a> -<span class="sourceLineNo">082</span> * <li>No need synchronized on {@link #sources}. {@link #sources} is a ConcurrentHashMap and there<a name="line.82"></a> -<span class="sourceLineNo">083</span> * is a Lock for peer id in {@link PeerProcedureHandlerImpl}. So there is no race for peer<a name="line.83"></a> -<span class="sourceLineNo">084</span> * operations.</li><a name="line.84"></a> -<span class="sourceLineNo">085</span> * <li>Need synchronized on {@link #walsById}. There are four methods which modify it,<a name="line.85"></a> -<span class="sourceLineNo">086</span> * {@link #addPeer(String)}, {@link #removePeer(String)},<a name="line.86"></a> -<span class="sourceLineNo">087</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and {@link #preLogRoll(Path)}.<a name="line.87"></a> -<span class="sourceLineNo">088</span> * {@link #walsById} is a ConcurrentHashMap and there is a Lock for peer id in<a name="line.88"></a> -<span class="sourceLineNo">089</span> * {@link PeerProcedureHandlerImpl}. So there is no race between {@link #addPeer(String)} and<a name="line.89"></a> -<span class="sourceLineNo">090</span> * {@link #removePeer(String)}. {@link #cleanOldLogs(NavigableSet, String, boolean, String)} is<a name="line.90"></a> -<span class="sourceLineNo">091</span> * called by {@link ReplicationSourceInterface}. So no race with {@link #addPeer(String)}.<a name="line.91"></a> -<span class="sourceLineNo">092</span> * {@link #removePeer(String)} will terminate the {@link ReplicationSourceInterface} firstly, then<a name="line.92"></a> -<span class="sourceLineNo">093</span> * remove the wals from {@link #walsById}. So no race with {@link #removePeer(String)}. The only<a name="line.93"></a> -<span class="sourceLineNo">094</span> * case need synchronized is {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and<a name="line.94"></a> -<span class="sourceLineNo">095</span> * {@link #preLogRoll(Path)}.</li><a name="line.95"></a> -<span class="sourceLineNo">096</span> * <li>No need synchronized on {@link #walsByIdRecoveredQueues}. There are three methods which<a name="line.96"></a> -<span class="sourceLineNo">097</span> * modify it, {@link #removePeer(String)} ,<a name="line.97"></a> -<span class="sourceLineNo">098</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and<a name="line.98"></a> -<span class="sourceLineNo">099</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()}.<a name="line.99"></a> -<span class="sourceLineNo">100</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} is called by<a name="line.100"></a> -<span class="sourceLineNo">101</span> * {@link ReplicationSourceInterface}. {@link #removePeer(String)} will terminate the<a name="line.101"></a> -<span class="sourceLineNo">102</span> * {@link ReplicationSourceInterface} firstly, then remove the wals from<a name="line.102"></a> -<span class="sourceLineNo">103</span> * {@link #walsByIdRecoveredQueues}. And {@link ReplicationSourceManager.NodeFailoverWorker#run()}<a name="line.103"></a> -<span class="sourceLineNo">104</span> * will add the wals to {@link #walsByIdRecoveredQueues} firstly, then start up a<a name="line.104"></a> -<span class="sourceLineNo">105</span> * {@link ReplicationSourceInterface}. So there is no race here. For<a name="line.105"></a> -<span class="sourceLineNo">106</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()} and {@link #removePeer(String)}, there<a name="line.106"></a> -<span class="sourceLineNo">107</span> * is already synchronized on {@link #oldsources}. So no need synchronized on<a name="line.107"></a> -<span class="sourceLineNo">108</span> * {@link #walsByIdRecoveredQueues}.</li><a name="line.108"></a> -<span class="sourceLineNo">109</span> * <li>Need synchronized on {@link #latestPaths} to avoid the new open source miss new log.</li><a name="line.109"></a> -<span class="sourceLineNo">110</span> * <li>Need synchronized on {@link #oldsources} to avoid adding recovered source for the<a name="line.110"></a> -<span class="sourceLineNo">111</span> * to-be-removed peer.</li><a name="line.111"></a> -<span class="sourceLineNo">112</span> * </ul><a name="line.112"></a> -<span class="sourceLineNo">113</span> */<a name="line.113"></a> -<span class="sourceLineNo">114</span>@InterfaceAudience.Private<a name="line.114"></a> -<span class="sourceLineNo">115</span>public class ReplicationSourceManager implements ReplicationListener {<a name="line.115"></a> -<span class="sourceLineNo">116</span> private static final Logger LOG = LoggerFactory.getLogger(ReplicationSourceManager.class);<a name="line.116"></a> -<span class="sourceLineNo">117</span> // all the sources that read this RS's logs and every peer only has one replication source<a name="line.117"></a> -<span class="sourceLineNo">118</span> private final ConcurrentMap<String, ReplicationSourceInterface> sources;<a name="line.118"></a> -<span class="sourceLineNo">119</span> // List of all the sources we got from died RSs<a name="line.119"></a> -<span class="sourceLineNo">120</span> private final List<ReplicationSourceInterface> oldsources;<a name="line.120"></a> -<span class="sourceLineNo">121</span> private final ReplicationQueueStorage queueStorage;<a name="line.121"></a> -<span class="sourceLineNo">122</span> private final ReplicationTracker replicationTracker;<a name="line.122"></a> -<span class="sourceLineNo">123</span> private final ReplicationPeers replicationPeers;<a name="line.123"></a> -<span class="sourceLineNo">124</span> // UUID for this cluster<a name="line.124"></a> -<span class="sourceLineNo">125</span> private final UUID clusterId;<a name="line.125"></a> -<span class="sourceLineNo">126</span> // All about stopping<a name="line.126"></a> -<span class="sourceLineNo">127</span> private final Server server;<a name="line.127"></a> -<span class="sourceLineNo">128</span><a name="line.128"></a> -<span class="sourceLineNo">129</span> // All logs we are currently tracking<a name="line.129"></a> -<span class="sourceLineNo">130</span> // Index structure of the map is: queue_id->logPrefix/logGroup->logs<a name="line.130"></a> -<span class="sourceLineNo">131</span> // For normal replication source, the peer id is same with the queue id<a name="line.131"></a> -<span class="sourceLineNo">132</span> private final ConcurrentMap<String, Map<String, NavigableSet<String>>> walsById;<a name="line.132"></a> -<span class="sourceLineNo">133</span> // Logs for recovered sources we are currently tracking<a name="line.133"></a> -<span class="sourceLineNo">134</span> // the map is: queue_id->logPrefix/logGroup->logs<a name="line.134"></a> -<span class="sourceLineNo">135</span> // For recovered source, the queue id's format is peer_id-servername-*<a name="line.135"></a> -<span class="sourceLineNo">136</span> private final ConcurrentMap<String, Map<String, NavigableSet<String>>> walsByIdRecoveredQueues;<a name="line.136"></a> -<span class="sourceLineNo">137</span><a name="line.137"></a> -<span class="sourceLineNo">138</span> private final Configuration conf;<a name="line.138"></a> -<span class="sourceLineNo">139</span> private final FileSystem fs;<a name="line.139"></a> -<span class="sourceLineNo">140</span> // The paths to the latest log of each wal group, for new coming peers<a name="line.140"></a> -<span class="sourceLineNo">141</span> private final Set<Path> latestPaths;<a name="line.141"></a> -<span class="sourceLineNo">142</span> // Path to the wals directories<a name="line.142"></a> -<span class="sourceLineNo">143</span> private final Path logDir;<a name="line.143"></a> -<span class="sourceLineNo">144</span> // Path to the wal archive<a name="line.144"></a> -<span class="sourceLineNo">145</span> private final Path oldLogDir;<a name="line.145"></a> -<span class="sourceLineNo">146</span> private final WALFileLengthProvider walFileLengthProvider;<a name="line.146"></a> -<span class="sourceLineNo">147</span> // The number of ms that we wait before moving znodes, HBASE-3596<a name="line.147"></a> -<span class="sourceLineNo">148</span> private final long sleepBeforeFailover;<a name="line.148"></a> -<span class="sourceLineNo">149</span> // Homemade executer service for replication<a name="line.149"></a> -<span class="sourceLineNo">150</span> private final ThreadPoolExecutor executor;<a name="line.150"></a> -<span class="sourceLineNo">151</span><a name="line.151"></a> -<span class="sourceLineNo">152</span> private final boolean replicationForBulkLoadDataEnabled;<a name="line.152"></a> -<span class="sourceLineNo">153</span><a name="line.153"></a> +<span class="sourceLineNo">062</span>import org.apache.zookeeper.KeeperException;<a name="line.62"></a> +<span class="sourceLineNo">063</span>import org.slf4j.Logger;<a name="line.63"></a> +<span class="sourceLineNo">064</span>import org.slf4j.LoggerFactory;<a name="line.64"></a> +<span class="sourceLineNo">065</span><a name="line.65"></a> +<span class="sourceLineNo">066</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.66"></a> +<span class="sourceLineNo">067</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.67"></a> +<span class="sourceLineNo">068</span><a name="line.68"></a> +<span class="sourceLineNo">069</span>/**<a name="line.69"></a> +<span class="sourceLineNo">070</span> * This class is responsible to manage all the replication sources. There are two classes of<a name="line.70"></a> +<span class="sourceLineNo">071</span> * sources:<a name="line.71"></a> +<span class="sourceLineNo">072</span> * <ul><a name="line.72"></a> +<span class="sourceLineNo">073</span> * <li>Normal sources are persistent and one per peer cluster</li><a name="line.73"></a> +<span class="sourceLineNo">074</span> * <li>Old sources are recovered from a failed region server and our only goal is to finish<a name="line.74"></a> +<span class="sourceLineNo">075</span> * replicating the WAL queue it had</li><a name="line.75"></a> +<span class="sourceLineNo">076</span> * </ul><a name="line.76"></a> +<span class="sourceLineNo">077</span> * <p><a name="line.77"></a> +<span class="sourceLineNo">078</span> * When a region server dies, this class uses a watcher to get notified and it tries to grab a lock<a name="line.78"></a> +<span class="sourceLineNo">079</span> * in order to transfer all the queues in a local old source.<a name="line.79"></a> +<span class="sourceLineNo">080</span> * <p><a name="line.80"></a> +<span class="sourceLineNo">081</span> * Synchronization specification:<a name="line.81"></a> +<span class="sourceLineNo">082</span> * <ul><a name="line.82"></a> +<span class="sourceLineNo">083</span> * <li>No need synchronized on {@link #sources}. {@link #sources} is a ConcurrentHashMap and there<a name="line.83"></a> +<span class="sourceLineNo">084</span> * is a Lock for peer id in {@link PeerProcedureHandlerImpl}. So there is no race for peer<a name="line.84"></a> +<span class="sourceLineNo">085</span> * operations.</li><a name="line.85"></a> +<span class="sourceLineNo">086</span> * <li>Need synchronized on {@link #walsById}. There are four methods which modify it,<a name="line.86"></a> +<span class="sourceLineNo">087</span> * {@link #addPeer(String)}, {@link #removePeer(String)},<a name="line.87"></a> +<span class="sourceLineNo">088</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and {@link #preLogRoll(Path)}.<a name="line.88"></a> +<span class="sourceLineNo">089</span> * {@link #walsById} is a ConcurrentHashMap and there is a Lock for peer id in<a name="line.89"></a> +<span class="sourceLineNo">090</span> * {@link PeerProcedureHandlerImpl}. So there is no race between {@link #addPeer(String)} and<a name="line.90"></a> +<span class="sourceLineNo">091</span> * {@link #removePeer(String)}. {@link #cleanOldLogs(NavigableSet, String, boolean, String)} is<a name="line.91"></a> +<span class="sourceLineNo">092</span> * called by {@link ReplicationSourceInterface}. So no race with {@link #addPeer(String)}.<a name="line.92"></a> +<span class="sourceLineNo">093</span> * {@link #removePeer(String)} will terminate the {@link ReplicationSourceInterface} firstly, then<a name="line.93"></a> +<span class="sourceLineNo">094</span> * remove the wals from {@link #walsById}. So no race with {@link #removePeer(String)}. The only<a name="line.94"></a> +<span class="sourceLineNo">095</span> * case need synchronized is {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and<a name="line.95"></a> +<span class="sourceLineNo">096</span> * {@link #preLogRoll(Path)}.</li><a name="line.96"></a> +<span class="sourceLineNo">097</span> * <li>No need synchronized on {@link #walsByIdRecoveredQueues}. There are three methods which<a name="line.97"></a> +<span class="sourceLineNo">098</span> * modify it, {@link #removePeer(String)} ,<a name="line.98"></a> +<span class="sourceLineNo">099</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and<a name="line.99"></a> +<span class="sourceLineNo">100</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()}.<a name="line.100"></a> +<span class="sourceLineNo">101</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} is called by<a name="line.101"></a> +<span class="sourceLineNo">102</span> * {@link ReplicationSourceInterface}. {@link #removePeer(String)} will terminate the<a name="line.102"></a> +<span class="sourceLineNo">103</span> * {@link ReplicationSourceInterface} firstly, then remove the wals from<a name="line.103"></a> +<span class="sourceLineNo">104</span> * {@link #walsByIdRecoveredQueues}. And {@link ReplicationSourceManager.NodeFailoverWorker#run()}<a name="line.104"></a> +<span class="sourceLineNo">105</span> * will add the wals to {@link #walsByIdRecoveredQueues} firstly, then start up a<a name="line.105"></a> +<span class="sourceLineNo">106</span> * {@link ReplicationSourceInterface}. So there is no race here. For<a name="line.106"></a> +<span class="sourceLineNo">107</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()} and {@link #removePeer(String)}, there<a name="line.107"></a> +<span class="sourceLineNo">108</span> * is already synchronized on {@link #oldsources}. So no need synchronized on<a name="line.108"></a> +<span class="sourceLineNo">109</span> * {@link #walsByIdRecoveredQueues}.</li><a name="line.109"></a> +<span class="sourceLineNo">110</span> * <li>Need synchronized on {@link #latestPaths} to avoid the new open source miss new log.</li><a name="line.110"></a> +<span class="sourceLineNo">111</span> * <li>Need synchronized on {@link #oldsources} to avoid adding recovered source for the<a name="line.111"></a> +<span class="sourceLineNo">112</span> * to-be-removed peer.</li><a name="line.112"></a> +<span class="sourceLineNo">113</span> * </ul><a name="line.113"></a> +<span class="sourceLineNo">114</span> */<a name="line.114"></a> +<span class="sourceLineNo">115</span>@InterfaceAudience.Private<a name="line.115"></a> +<span class="sourceLineNo">116</span>public class ReplicationSourceManager implements ReplicationListener {<a name="line.116"></a> +<span class="sourceLineNo">117</span> private static final Logger LOG = LoggerFactory.getLogger(ReplicationSourceManager.class);<a name="line.117"></a> +<span class="sourceLineNo">118</span> // all the sources that read this RS's logs and every peer only has one replication source<a name="line.118"></a> +<span class="sourceLineNo">119</span> private final ConcurrentMap<String, ReplicationSourceInterface> sources;<a name="line.119"></a> +<span class="sourceLineNo">120</span> // List of all the sources we got from died RSs<a name="line.120"></a> +<span class="sourceLineNo">121</span> private final List<ReplicationSourceInterface> oldsources;<a name="line.121"></a> +<span class="sourceLineNo">122</span> private final ReplicationQueueStorage queueStorage;<a name="line.122"></a> +<span class="sourceLineNo">123</span> private final ReplicationTracker replicationTracker;<a name="line.123"></a> +<span class="sourceLineNo">124</span> private final ReplicationPeers replicationPeers;<a name="line.124"></a> +<span class="sourceLineNo">125</span> // UUID for this cluster<a name="line.125"></a> +<span class="sourceLineNo">126</span> private final UUID clusterId;<a name="line.126"></a> +<span class="sourceLineNo">127</span> // All about stopping<a name="line.127"></a> +<span class="sourceLineNo">128</span> private final Server server;<a name="line.128"></a> +<span class="sourceLineNo">129</span><a name="line.129"></a> +<span class="sourceLineNo">130</span> // All logs we are currently tracking<a name="line.130"></a> +<span class="sourceLineNo">131</span> // Index structure of the map is: queue_id->logPrefix/logGroup->logs<a name="line.131"></a> +<span class="sourceLineNo">132</span> // For normal replication source, the peer id is same with the queue id<a name="line.132"></a> +<span class="sourceLineNo">133</span> private final ConcurrentMap<String, Map<String, NavigableSet<String>>> walsById;<a name="line.133"></a> +<span class="sourceLineNo">134</span> // Logs for recovered sources we are currently tracking<a name="line.134"></a> +<span class="sourceLineNo">135</span> // the map is: queue_id->logPrefix/logGroup->logs<a name="line.135"></a> +<span class="sourceLineNo">136</span> // For recovered source, the queue id's format is peer_id-servername-*<a name="line.136"></a> +<span class="sourceLineNo">137</span> private final ConcurrentMap<String, Map<String, NavigableSet<String>>> walsByIdRecoveredQueues;<a name="line.137"></a> +<span class="sourceLineNo">138</span><a name="line.138"></a> +<span class="sourceLineNo">139</span> private final Configuration conf;<a name="line.139"></a> +<span class="sourceLineNo">140</span> private final FileSystem fs;<a name="line.140"></a> +<span class="sourceLineNo">141</span> // The paths to the latest log of each wal group, for new coming peers<a name="line.141"></a> +<span class="sourceLineNo">142</span> private final Set<Path> latestPaths;<a name="line.142"></a> +<span class="sourceLineNo">143</span> // Path to the wals directories<a name="line.143"></a> +<span class="sourceLineNo">144</span> private final Path logDir;<a name="line.144"></a> +<span class="sourceLineNo">145</span> // Path to the wal archive<a name="line.145"></a> +<span class="sourceLineNo">146</span> private final Path oldLogDir;<a name="line.146"></a> +<span class="sourceLineNo">147</span> private final WALFileLengthProvider walFileLengthProvider;<a name="line.147"></a> +<span class="sourceLineNo">148</span> // The number of ms that we wait before moving znodes, HBASE-3596<a name="line.148"></a> +<span class="sourceLineNo">149</span> private final long sleepBeforeFailover;<a name="line.149"></a> +<span class="sourceLineNo">150</span> // Homemade executer service for replication<a name="line.150"></a> +<span class="sourceLineNo">151</span> private final ThreadPoolExecutor executor;<a name="line.151"></a> +<span class="sourceLineNo">152</span><a name="line.152"></a> +<span class="sourceLineNo">153</span> private final boolean replicationForBulkLoadDataEnabled;<a name="line.153"></a> <span class="sourceLineNo">154</span><a name="line.154"></a> -<span class="sourceLineNo">155</span> private AtomicLong totalBufferUsed = new AtomicLong();<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> * Creates a replication manager and sets the watch on all the other registered region servers<a name="line.158"></a> -<span class="sourceLineNo">159</span> * @param queueStorage the interface for manipulating replication queues<a name="line.159"></a> -<span class="sourceLineNo">160</span> * @param replicationPeers<a name="line.160"></a> -<span class="sourceLineNo">161</span> * @param replicationTracker<a name="line.161"></a> -<span class="sourceLineNo">162</span> * @param conf the configuration to use<a name="line.162"></a> -<span class="sourceLineNo">163</span> * @param server the server for this region server<a name="line.163"></a> -<span class="sourceLineNo">164</span> * @param fs the file system to use<a name="line.164"></a> -<span class="sourceLineNo">165</span> * @param logDir the directory that contains all wal directories of live RSs<a name="line.165"></a> -<span class="sourceLineNo">166</span> * @param oldLogDir the directory where old logs are archived<a name="line.166"></a> -<span class="sourceLineNo">167</span> * @param clusterId<a name="line.167"></a> -<span class="sourceLineNo">168</span> */<a name="line.168"></a> -<span class="sourceLineNo">169</span> public ReplicationSourceManager(ReplicationQueueStorage queueStorage,<a name="line.169"></a> -<span class="sourceLineNo">170</span> ReplicationPeers replicationPeers, ReplicationTracker replicationTracker, Configuration conf,<a name="line.170"></a> -<span class="sourceLineNo">171</span> Server server, FileSystem fs, Path logDir, Path oldLogDir, UUID clusterId,<a name="line.171"></a> -<span class="sourceLineNo">172</span> WALFileLengthProvider walFileLengthProvider) throws IOException {<a name="line.172"></a> -<span class="sourceLineNo">173</span> // CopyOnWriteArrayList is thread-safe.<a name="line.173"></a> -<span class="sourceLineNo">174</span> // Generally, reading is more than modifying.<a name="line.174"></a> -<span class="sourceLineNo">175</span> this.sources = new ConcurrentHashMap<>();<a name="line.175"></a> -<span class="sourceLineNo">176</span> this.queueStorage = queueStorage;<a name="line.176"></a> -<span class="sourceLineNo">177</span> this.replicationPeers = replicationPeers;<a name="line.177"></a> -<span class="sourceLineNo">178</span> this.replicationTracker = replicationTracker;<a name="line.178"></a> -<span class="sourceLineNo">179</span> this.server = server;<a name="line.179"></a> -<span class="sourceLineNo">180</span> this.walsById = new ConcurrentHashMap<>();<a name="line.180"></a> -<span class="sourceLineNo">181</span> this.walsByIdRecoveredQueues = new ConcurrentHashMap<>();<a name="line.181"></a> -<span class="sourceLineNo">182</span> this.oldsources = new ArrayList<>();<a name="line.182"></a> -<span class="sourceLineNo">183</span> this.conf = conf;<a name="line.183"></a> -<span class="sourceLineNo">184</span> this.fs = fs;<a name="line.184"></a> -<span class="sourceLineNo">185</span> this.logDir = logDir;<a name="line.185"></a> -<span class="sourceLineNo">186</span> this.oldLogDir = oldLogDir;<a name="line.186"></a> -<span class="sourceLineNo">187</span> this.sleepBeforeFailover = conf.getLong("replication.sleep.before.failover", 30000); // 30<a name="line.187"></a> -<span class="sourceLineNo">188</span> // seconds<a name="line.188"></a> -<span class="sourceLineNo">189</span> this.clusterId = clusterId;<a name="line.189"></a> -<span class="sourceLineNo">190</span> this.walFileLengthProvider = walFileLengthProvider;<a name="line.190"></a> -<span class="sourceLineNo">191</span> this.replicationTracker.registerListener(this);<a name="line.191"></a> -<span class="sourceLineNo">192</span> // It's preferable to failover 1 RS at a time, but with good zk servers<a name="line.192"></a> -<span class="sourceLineNo">193</span> // more could be processed at the same time.<a name="line.193"></a> -<span class="sourceLineNo">194</span> int nbWorkers = conf.getInt("replication.executor.workers", 1);<a name="line.194"></a> -<span class="sourceLineNo">195</span> // use a short 100ms sleep since this could be done inline with a RS startup<a name="line.195"></a> -<span class="sourceLineNo">196</span> // even if we fail, other region servers can take care of it<a name="line.196"></a> -<span class="sourceLineNo">197</span> this.executor = new ThreadPoolExecutor(nbWorkers, nbWorkers, 100, TimeUnit.MILLISECONDS,<a name="line.197"></a> -<span class="sourceLineNo">198</span> new LinkedBlockingQueue<>());<a name="line.198"></a> -<span class="sourceLineNo">199</span> ThreadFactoryBuilder tfb = new ThreadFactoryBuilder();<a name="line.199"></a> -<span 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Add peer to replicationPeers 2. Add the normal source and related replication queue 3. Add<a name="line.251"></a> -<span class="sourceLineNo">252</span> * HFile Refs<a name="line.252"></a> -<span class="sourceLineNo">253</span> * @param peerId the id of replication peer<a name="line.253"></a> -<span class="sourceLineNo">254</span> */<a name="line.254"></a> -<span class="sourceLineNo">255</span> public void addPeer(String peerId) throws IOException {<a name="line.255"></a> -<span class="sourceLineNo">256</span> boolean added = false;<a name="line.256"></a> -<span class="sourceLineNo">257</span> try {<a name="line.257"></a> -<span class="sourceLineNo">258</span> added = this.replicationPeers.addPeer(peerId);<a name="line.258"></a> -<span class="sourceLineNo">259</span> } catch (ReplicationException e) {<a name="line.259"></a> -<span class="sourceLineNo">260</span> throw new IOException(e);<a name="line.260"></a> -<span class="sourceLineNo">261</span> }<a name="line.261"></a> -<span class="sourceLineNo">262</span> if (added) {<a name="line.262"></a> -<span class="sourceLineNo">263</span> addSource(peerId);<a name="line.263"></a> -<span class="sourceLineNo">264</span> if (replicationForBulkLoadDataEnabled) {<a name="line.264"></a> -<span class="sourceLineNo">265</span> throwIOExceptionWhenFail(() -> this.queueStorage.addPeerToHFileRefs(peerId));<a name="line.265"></a> -<span class="sourceLineNo">266</span> }<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> /**<a name="line.270"></a> -<span class="sourceLineNo">271</span> * 1. Remove peer for replicationPeers 2. Remove all the recovered sources for the specified id<a name="line.271"></a> -<span class="sourceLineNo">272</span> * and related replication queues 3. Remove the normal source and related replication queue 4.<a name="line.272"></a> -<span class="sourceLineNo">273</span> * Remove HFile Refs<a name="line.273"></a> -<span class="sourceLineNo">274</span> * @param peerId the id of the replication peer<a name="line.274"></a> -<span class="sourceLineNo">275</span> */<a name="line.275"></a> -<span class="sourceLineNo">276</span> public void removePeer(String peerId) {<a name="line.276"></a> -<span class="sourceLineNo">277</span> replicationPeers.removePeer(peerId);<a name="line.277"></a> -<span class="sourceLineNo">278</span> String terminateMessage = "Replication stream was removed by a user";<a name="line.278"></a> -<span class="sourceLineNo">279</span> List<ReplicationSourceInterface> oldSourcesToDelete = new ArrayList<>();<a name="line.279"></a> -<span class="sourceLineNo">280</span> // synchronized on oldsources to avoid adding recovered source for the to-be-removed peer<a name="line.280"></a> -<span class="sourceLineNo">281</span> // see NodeFailoverWorker.run<a name="line.281"></a> -<span class="sourceLineNo">282</span> synchronized (this.oldsources) {<a name="line.282"></a> -<span class="sourceLineNo">283</span> // First close all the recovered sources for this peer<a name="line.283"></a> -<span class="sourceLineNo">284</span> for (ReplicationSourceInterface src : oldsources) {<a name="line.284"></a> -<span class="sourceLineNo">285</span> if (peerId.equals(src.getPeerId())) {<a name="line.285"></a> -<span class="sourceLineNo">286</span> oldSourcesToDelete.add(src);<a name="line.286"></a> -<span class="sourceLineNo">287</span> }<a name="line.287"></a> -<span class="sourceLineNo">288</span> }<a name="line.288"></a> -<span class="sourceLineNo">289</span> for (ReplicationSourceInterface src : oldSourcesToDelete) {<a name="line.289"></a> -<span class="sourceLineNo">290</span> src.terminate(terminateMessage);<a name="line.290"></a> -<span class="sourceLineNo">291</span> removeRecoveredSource(src);<a 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// This only happened in unit test TestReplicationSourceManager#testPeerRemovalCleanup<a name="line.302"></a> -<span class="sourceLineNo">303</span> // Delete queue from storage and memory and queue id is same with peer id for normal<a name="line.303"></a> -<span class="sourceLineNo">304</span> // source<a name="line.304"></a> -<span class="sourceLineNo">305</span> deleteQueue(peerId);<a name="line.305"></a> -<span class="sourceLineNo">306</span> this.walsById.remove(peerId);<a name="line.306"></a> -<span class="sourceLineNo">307</span> }<a name="line.307"></a> -<span class="sourceLineNo">308</span><a name="line.308"></a> -<span class="sourceLineNo">309</span> // Remove HFile Refs<a name="line.309"></a> -<span class="sourceLineNo">310</span> abortWhenFail(() -> this.queueStorage.removePeerFromHFileRefs(peerId));<a name="line.310"></a> -<span class="sourceLineNo">311</span> }<a name="line.311"></a> -<span class="sourceLineNo">312</span><a name="line.312"></a> -<span 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Meanwhile, add new replication<a name="line.330"></a> -<span class="sourceLineNo">331</span> * queue to storage. 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Here we don't need to change<a name="line.366"></a> -<span class="sourceLineNo">367</span> * replication queue storage and only to enqueue all logs to the new replication source<a name="line.367"></a> -<span class="sourceLineNo">368</span> * @param peerId the id of the replication peer<a name="line.368"></a> -<span class="sourceLineNo">369</span> * @throws IOException<a name="line.369"></a> -<span class="sourceLineNo">370</span> */<a name="line.370"></a> -<span class="sourceLineNo">371</span> public void refreshSources(String peerId) throws IOException {<a name="line.371"></a> -<span class="sourceLineNo">372</span> String terminateMessage = "Peer " + peerId +<a name="line.372"></a> -<span class="sourceLineNo">373</span> " state or config changed. 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So we need a deep copied <peerId, peer> map to decide whether we<a name="line.632"></a> -<span class="sourceLineNo">633</span> // should start the RecoveredReplicationSource. 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name="line.642"></a> -<span class="sourceLineNo">643</span> }<a name="line.643"></a> -<span class="sourceLineNo">644</span><a name="line.644"></a> -<span class="sourceLineNo">645</span> private boolean isOldPeer(String peerId, ReplicationPeerImpl newPeerRef) {<a name="line.645"></a> -<span class="sourceLineNo">646</span> ReplicationPeerImpl oldPeerRef = peersSnapshot.get(peerId);<a name="line.646"></a> -<span class="sourceLineNo">647</span> return oldPeerRef != null && oldPeerRef == newPeerRef;<a name="line.647"></a> -<span class="sourceLineNo">648</span> }<a name="line.648"></a> -<span class="sourceLineNo">649</span><a name="line.649"></a> -<span class="sourceLineNo">650</span> @Override<a name="line.650"></a> -<span class="sourceLineNo">651</span> public void run() {<a name="line.651"></a> -<span class="sourceLineNo">652</span> // Wait a bit before transferring the queues, we may be shutting down.<a name="line.652"></a> -<span class="sourceLineNo">653</span> // This sleep may not be enough in some cases.<a name="line.653"></a> -<span class="sourceLineNo">654</span> try {<a name="line.654"></a> -<span class="sourceLineNo">655</span> Thread.sleep(sleepBeforeFailover +<a name="line.655"></a> -<span class="sourceLineNo">656</span> (long) (ThreadLocalRandom.current().nextFloat() * sleepBeforeFailover));<a name="line.656"></a> -<span class="sourceLineNo">657</span> } catch (InterruptedException e) {<a name="line.657"></a> -<span class="sourceLineNo">658</span> LOG.warn("Interrupted while waiting before transferring a queue.");<a name="line.658"></a> -<span class="sourceLineNo">659</span> Thread.currentThread().interrupt();<a name="line.659"></a> -<span class="sourceLineNo">660</span> }<a name="line.660"></a> -<span class="sourceLineNo">661</span> // We try to lock that rs' queue directory<a name="line.661"></a> -<span class="sourceLineNo">662</span> if (server.isStopped()) {<a name="line.662"></a> -<span class="sourceLineNo">663</span> LOG.info("Not transferring queue since we are shutting down");<a name="line.663"></a> -<span class="sourceLineNo">664</span> return;<a name="line.664"></a> -<span class="sourceLineNo">665</span> }<a name="line.665"></a> -<span class="sourceLineNo">666</span> Map<String, Set<String>> newQueues = new HashMap<>();<a name="line.666"></a> -<span class="sourceLineNo">667</span> try {<a name="line.667"></a> -<span class="sourceLineNo">668</span> List<String> queues = queueStorage.getAllQueues(deadRS);<a name="line.668"></a> -<span class="sourceLineNo">669</span> while (!queues.isEmpty()) {<a name="line.669"></a> -<span class="sourceLineNo">670</span> Pair<String, SortedSet<String>> peer = queueStorage.claimQueue(deadRS,<a name="line.670"></a> -<span class="sourceLineNo">671</span> queues.get(ThreadLocalRandom.current().nextInt(queues.size())), server.getServerName());<a name="line.671"></a> -<span class="sourceLineNo">672</span> long sleep = sleepBeforeFailover / 2;<a name="line.672"></a> -<span class="sourceLineNo">673</span> if (!peer.getSecond().isEmpty()) {<a name="line.673"></a> -<span class="sourceLineNo">674</span> newQueues.put(peer.getFirst(), peer.getSecond());<a name="line.674"></a> -<span class="sourceLineNo">675</span> sleep = sleepBeforeFailover;<a name="line.675"></a> -<span class="sourceLineNo">676</span> }<a name="line.676"></a> -<span class="sourceLineNo">677</span> try {<a name="line.677"></a> -<span class="sourceLineNo">678</span> Thread.sleep(sleep);<a name="line.678"></a> -<span class="sourceLineNo">679</span> } catch (InterruptedException e) {<a name="line.679"></a> -<span class="sourceLineNo">680</span> LOG.warn("Interrupted while waiting before transferring a queue.");<a name="line.680"></a> -<span class="sourceLineNo">681</span> Thread.currentThread().interrupt();<a name="line.681"></a> -<span class="sourceLineNo">682</span> }<a name="line.682"></a> -<span class="sourceLineNo">683</span> queues = queueStorage.getAllQueues(deadRS);<a name="line.683"></a> -<span class="sourceLineNo">684</span> }<a name="line.684"></a> -<span class="sourceLineNo">685</span> if (queues.isEmpty()) {<a name="line.685"></a> -<span class="sourceLineNo">686</span> queueStorage.removeReplicatorIfQueueIsEmpty(deadRS);<a name="line.686"></a> -<span class="sourceLineNo">687</span> }<a name="line.687"></a> -<span class="sourceLineNo">688</span> } catch (ReplicationException e) {<a name="line.688"></a> -<span class="sourceLineNo">689</span> server.abort("Failed to claim queue from dead regionserver", e);<a name="line.689"></a> -<span class="sourceLineNo">690</span> return;<a name="line.690"></a> -<span class="sourceLineNo">691</span> }<a name="line.691"></a> -<span class="sourceLineNo">692</span> // Copying over the failed queue is completed.<a name="line.692"></a> -<span class="sourceLineNo">693</span> if (newQueues.isEmpty()) {<a name="line.693"></a> -<span class="sourceLineNo">694</span> // We either didn't get the lock or the failed region 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ReplicationQueueInfo(queueId);<a name="line.704"></a> -<span class="sourceLineNo">705</span> String actualPeerId = replicationQueueInfo.getPeerId();<a name="line.705"></a> -<span class="sourceLineNo">706</span><a name="line.706"></a> -<span class="sourceLineNo">707</span> ReplicationPeerImpl peer = replicationPeers.getPeer(actualPeerId);<a name="line.707"></a> -<span class="sourceLineNo">708</span> if (peer == null || !isOldPeer(actualPeerId, peer)) {<a name="line.708"></a> -<span class="sourceLineNo">709</span> LOG.warn("Skipping failover for peer {} of node {}, peer is null", actualPeerId,<a name="line.709"></a> -<span class="sourceLineNo">710</span> deadRS);<a name="line.710"></a> -<span class="sourceLineNo">711</span> abortWhenFail(() -> queueStorage.removeQueue(server.getServerName(), queueId));<a name="line.711"></a> -<span class="sourceLineNo">712</span> continue;<a name="line.712"></a> -<span class="sourceLineNo">713</span> }<a name="line.713"></a> -<span class="sourceLineNo">714</span> if (server instanceof ReplicationSyncUp.DummyServer<a name="line.714"></a> -<span class="sourceLineNo">715</span> && peer.getPeerState().equals(PeerState.DISABLED)) {<a name="line.715"></a> -<span class="sourceLineNo">716</span> LOG.warn("Peer {} is disabled. ReplicationSyncUp tool will skip "<a name="line.716"></a> -<span class="sourceLineNo">717</span> + "replicating data to this peer.",<a name="line.717"></a> -<span class="sourceLineNo">718</span> actualPeerId);<a name="line.718"></a> -<span class="sourceLineNo">719</span> continue;<a name="line.719"></a> -<span class="sourceLineNo">720</span> }<a name="line.720"></a> -<span class="sourceLineNo">721</span> // track sources in walsByIdRecoveredQueues<a name="line.721"></a> -<span class="sourceLineNo">722</span> Map<String, NavigableSet<String>> walsByGroup = new HashMap<>();<a name="line.722"></a> -<span class="sourceLineNo">723</span> walsByIdRecoveredQueues.put(queueId, walsByGroup);<a name="line.723"></a> -<span class="sourceLineNo">724</span> for (String wal : walsSet) {<a name="line.724"></a> -<span class="sourceLineNo">725</span> String walPrefix = AbstractFSWALProvider.getWALPrefixFromWALName(wal);<a name="line.725"></a> -<span class="sourceLineNo">726</span> NavigableSet<String> 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}<a name="line.748"></a> -<span class="sourceLineNo">749</span> } catch (IOException e) {<a name="line.749"></a> -<span class="sourceLineNo">750</span> // TODO manage it<a name="line.750"></a> -<span class="sourceLineNo">751</span> LOG.error("Failed creating a source", e);<a name="line.751"></a> -<span class="sourceLineNo">752</span> }<a name="line.752"></a> -<span class="sourceLineNo">753</span> }<a name="line.753"></a> -<span class="sourceLineNo">754</span> }<a name="line.754"></a> -<span class="sourceLineNo">755</span> }<a name="line.755"></a> -<span class="sourceLineNo">756</span><a name="line.756"></a> -<span class="sourceLineNo">757</span> /**<a name="line.757"></a> -<span class="sourceLineNo">758</span> * Terminate the replication on this region server<a name="line.758"></a> -<span class="sourceLineNo">759</span> */<a name="line.759"></a> -<span class="sourceLineNo">760</span> public void join() {<a name="line.760"></a> -<span class="sourceLineNo">761</span> this.executor.shutdown();<a name="line.761"></a> -<span class="sourceLineNo">762</span> for (ReplicationSourceInterface source : this.sources.values()) {<a name="line.762"></a> -<span class="sourceLineNo">763</span> source.terminate("Region server is closing");<a name="line.763"></a> -<span class="sourceLineNo">764</span> }<a name="line.764"></a> -<span class="sourceLineNo">765</span> }<a name="line.765"></a> -<span class="sourceLineNo">766</span><a name="line.766"></a> -<span class="sourceLineNo">767</span> /**<a name="line.767"></a> -<span class="sourceLineNo">768</span> * Get a copy of the wals of the normal sources on this rs<a name="line.768"></a> -<span class="sourceLineNo">769</span> * @return a sorted set of wal names<a name="line.769"></a> -<span class="sourceLineNo">770</span> */<a name="line.770"></a> -<span class="sourceLineNo">771</span> @VisibleForTesting<a name="line.771"></a> -<span class="sourceLineNo">772</span> public Map<String, Map<String, NavigableSet<String>>> getWALs() {<a name="line.772"></a> -<span class="sourceLineNo">773</span> return Collections.unmodifiableMap(walsById);<a name="line.773"></a> -<span class="sourceLineNo">774</span> }<a name="line.774"></a> -<span class="sourceLineNo">775</span><a name="line.775"></a> -<span class="sourceLineNo">776</span> /**<a name="line.776"></a> -<span class="sourceLineNo">777</span> * Get a copy of the wals of the recovered sources on this rs<a name="line.777"></a> -<span class="sourceLineNo">778</span> * @return a sorted set of wal names<a name="line.778"></a> +<span class="sourceLineNo">155</span><a name="line.155"></a> +<span class="sourceLineNo">156</span> private AtomicLong totalBufferUsed = new AtomicLong();<a name="line.156"></a> +<span class="sourceLineNo">157</span><a name="line.157"></a> +<span class="sourceLineNo">158</span> /**<a name="line.158"></a> +<span class="sourceLineNo">159</span> * Creates a replication manager and sets the watch on all the other registered region servers<a name="line.159"></a> +<span class="sourceLineNo">160</span> * @param queueStorage the interface for manipulating replication queues<a name="line.160"></a> +<span class="sourceLineNo">161</span> * @param replicationPeers<a name="line.161"></a> +<span class="sourceLineNo">162</span> * @param replicationTracker<a name="line.162"></a> +<span class="sourceLineNo">163</span> * @param conf the configuration to use<a name="line.163"></a> +<span class="sourceLineNo">164</span> * @param server the server for this region server<a name="line.164"></a> +<span class="sourceLineNo">165</span> * @param fs the file system to use<a name="line.165"></a> +<span class="sourceLineNo">166</span> * @param logDir the directory that contains all wal directories of live RSs<a name="line.166"></a> +<span class="sourceLineNo">167</span> * @param oldLogDir the directory where old logs are archived<a name="line.167"></a> +<span class="sourceLineNo">168</span> * @param clusterId<a name="line.168"></a> +<span class="sourceLineNo">169</span> */<a name="line.169"></a> +<span class="sourceLineNo">170</span> public ReplicationSourceManager(ReplicationQueueStorage queueStorage,<a name="line.170"></a> +<span class="sourceLineNo">171</span> ReplicationPeers replicationPeers, ReplicationTracker replicationTracker, Configuration conf,<a name="line.171"></a> +<span class="sourceLineNo">172</span> Server server, FileSystem fs, Path logDir, Path oldLogDir, UUID clusterId,<a name="line.172"></a> +<span class="sourceLineNo">173</span> WALFileLengthProvider walFileLengthProvider) throws IOException {<a name="line.173"></a> +<span class="sourceLineNo">174</span> // CopyOnWriteArrayList is thread-safe.<a name="line.174"></a> +<span class="sourceLineNo">175</span> // Generally, reading is more than modifying.<a name="line.175"></a> +<span class="sourceLineNo">176</span> this.sources = new ConcurrentHashMap<>();<a name="line.176"></a> +<span class="sourceLineNo">177</span> this.queueStorage = queueStorage;<a name="line.177"></a> +<span class="sourceLineNo">178</span> this.replicationPeers = replicationPeers;<a name="line.178"></a> +<span class="sourceLineNo">179</span> this.replicationTracker = replicationTracker;<a name="line.179"></a> +<span class="sourceLineNo">180</span> this.server = server;<a name="line.180"></a> +<span class="sourceLineNo">181</span> this.walsById = new ConcurrentHashMap<>();<a name="line.181"></a> +<span class="sourceLineNo">182</span> this.walsByIdRecoveredQueues = new ConcurrentHashMap<>();<a name="line.182"></a> +<span class="sourceLineNo">183</span> this.old
<TRUNCATED>