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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/03/19 14:53:57 UTC
[17/26] hbase-site git commit: Published site at
67f013430c9ba051385c45d72ee680c44eb88470.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/fd35fe02/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.NodeFailoverWorker.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.NodeFailoverWorker.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.NodeFailoverWorker.html
index 8e48140..2676386 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.NodeFailoverWorker.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.NodeFailoverWorker.html
@@ -33,855 +33,860 @@
<span class="sourceLineNo">025</span>import java.util.Iterator;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Map;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.Set;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.SortedSet;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.TreeSet;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.UUID;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.util.concurrent.ConcurrentMap;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.util.concurrent.Future;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import java.util.concurrent.RejectedExecutionException;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import java.util.concurrent.TimeUnit;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import java.util.stream.Collectors;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.conf.Configuration;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.fs.FileSystem;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.fs.Path;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.HConstants;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.Server;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.ServerName;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.TableName;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.replication.ReplicationException;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.replication.ReplicationListener;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.replication.ReplicationPeer;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.replication.ReplicationPeer.PeerState;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.replication.ReplicationPeers;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.replication.ReplicationQueueInfo;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.replication.ReplicationQueueStorage;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.replication.ReplicationTracker;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.slf4j.Logger;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.slf4j.LoggerFactory;<a name="line.61"></a>
-<span class="sourceLineNo">062</span><a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.64"></a>
-<span class="sourceLineNo">065</span><a name="line.65"></a>
-<span class="sourceLineNo">066</span>/**<a name="line.66"></a>
-<span class="sourceLineNo">067</span> * This class is responsible to manage all the replication sources. There are two classes of<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * sources:<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * <ul><a name="line.69"></a>
-<span class="sourceLineNo">070</span> * <li>Normal sources are persistent and one per peer cluster</li><a name="line.70"></a>
-<span class="sourceLineNo">071</span> * <li>Old sources are recovered from a failed region server and our only goal is to finish<a name="line.71"></a>
-<span class="sourceLineNo">072</span> * replicating the WAL queue it had</li><a name="line.72"></a>
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-<span class="sourceLineNo">074</span> * <p><a name="line.74"></a>
-<span class="sourceLineNo">075</span> * When a region server dies, this class uses a watcher to get notified and it tries to grab a lock<a name="line.75"></a>
-<span class="sourceLineNo">076</span> * in order to transfer all the queues in a local old source.<a name="line.76"></a>
-<span class="sourceLineNo">077</span> * <p><a name="line.77"></a>
-<span class="sourceLineNo">078</span> * Synchronization specification:<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * <ul><a name="line.79"></a>
-<span class="sourceLineNo">080</span> * <li>No need synchronized on {@link #sources}. {@link #sources} is a ConcurrentHashMap and there<a name="line.80"></a>
-<span class="sourceLineNo">081</span> * is a Lock for peer id in {@link PeerProcedureHandlerImpl}. So there is no race for peer<a name="line.81"></a>
-<span class="sourceLineNo">082</span> * operations.</li><a name="line.82"></a>
-<span class="sourceLineNo">083</span> * <li>Need synchronized on {@link #walsById}. There are four methods which modify it,<a name="line.83"></a>
-<span class="sourceLineNo">084</span> * {@link #addPeer(String)}, {@link #removePeer(String)},<a name="line.84"></a>
-<span class="sourceLineNo">085</span> * {@link #cleanOldLogs(SortedSet, String, String)} and {@link #preLogRoll(Path)}.<a name="line.85"></a>
-<span class="sourceLineNo">086</span> * {@link #walsById} is a ConcurrentHashMap and there is a Lock for peer id in<a name="line.86"></a>
-<span class="sourceLineNo">087</span> * {@link PeerProcedureHandlerImpl}. So there is no race between {@link #addPeer(String)} and<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * {@link #removePeer(String)}. {@link #cleanOldLogs(SortedSet, String, String)} is called by<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * {@link ReplicationSourceInterface}. So no race with {@link #addPeer(String)}.<a name="line.89"></a>
-<span class="sourceLineNo">090</span> * {@link #removePeer(String)} will terminate the {@link ReplicationSourceInterface} firstly, then<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * remove the wals from {@link #walsById}. So no race with {@link #removePeer(String)}. The only<a name="line.91"></a>
-<span class="sourceLineNo">092</span> * case need synchronized is {@link #cleanOldLogs(SortedSet, String, String)} and<a name="line.92"></a>
-<span class="sourceLineNo">093</span> * {@link #preLogRoll(Path)}.</li><a name="line.93"></a>
-<span class="sourceLineNo">094</span> * <li>No need synchronized on {@link #walsByIdRecoveredQueues}. There are three methods which<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * modify it, {@link #removePeer(String)} , {@link #cleanOldLogs(SortedSet, String, String)} and<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()}.<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * {@link #cleanOldLogs(SortedSet, String, String)} is called by {@link ReplicationSourceInterface}.<a name="line.97"></a>
-<span class="sourceLineNo">098</span> * {@link #removePeer(String)} will terminate the {@link ReplicationSourceInterface} firstly, then<a name="line.98"></a>
-<span class="sourceLineNo">099</span> * remove the wals from {@link #walsByIdRecoveredQueues}. And<a name="line.99"></a>
-<span class="sourceLineNo">100</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()} will add the wals to<a name="line.100"></a>
-<span class="sourceLineNo">101</span> * {@link #walsByIdRecoveredQueues} firstly, then start up a {@link ReplicationSourceInterface}. So<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * there is no race here. For {@link ReplicationSourceManager.NodeFailoverWorker#run()} and<a name="line.102"></a>
-<span class="sourceLineNo">103</span> * {@link #removePeer(String)}, there is already synchronized on {@link #oldsources}. So no need<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * synchronized on {@link #walsByIdRecoveredQueues}.</li><a name="line.104"></a>
-<span class="sourceLineNo">105</span> * <li>Need synchronized on {@link #latestPaths} to avoid the new open source miss new log.</li><a name="line.105"></a>
-<span class="sourceLineNo">106</span> * <li>Need synchronized on {@link #oldsources} to avoid adding recovered source for the<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * to-be-removed peer.</li><a name="line.107"></a>
-<span class="sourceLineNo">108</span> * </ul><a name="line.108"></a>
-<span class="sourceLineNo">109</span> */<a name="line.109"></a>
-<span class="sourceLineNo">110</span>@InterfaceAudience.Private<a name="line.110"></a>
-<span class="sourceLineNo">111</span>public class ReplicationSourceManager implements ReplicationListener {<a name="line.111"></a>
-<span class="sourceLineNo">112</span> private static final Logger LOG = LoggerFactory.getLogger(ReplicationSourceManager.class);<a name="line.112"></a>
-<span class="sourceLineNo">113</span> // all the sources that read this RS's logs and every peer only has one replication source<a name="line.113"></a>
-<span class="sourceLineNo">114</span> private final ConcurrentMap<String, ReplicationSourceInterface> sources;<a name="line.114"></a>
-<span class="sourceLineNo">115</span> // List of all the sources we got from died RSs<a name="line.115"></a>
-<span class="sourceLineNo">116</span> private final List<ReplicationSourceInterface> oldsources;<a name="line.116"></a>
-<span class="sourceLineNo">117</span> private final ReplicationQueueStorage queueStorage;<a name="line.117"></a>
-<span class="sourceLineNo">118</span> private final ReplicationTracker replicationTracker;<a name="line.118"></a>
-<span class="sourceLineNo">119</span> private final ReplicationPeers replicationPeers;<a name="line.119"></a>
-<span class="sourceLineNo">120</span> // UUID for this cluster<a name="line.120"></a>
-<span class="sourceLineNo">121</span> private final UUID clusterId;<a name="line.121"></a>
-<span class="sourceLineNo">122</span> // All about stopping<a name="line.122"></a>
-<span class="sourceLineNo">123</span> private final Server server;<a name="line.123"></a>
-<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span> // All logs we are currently tracking<a name="line.125"></a>
-<span class="sourceLineNo">126</span> // Index structure of the map is: queue_id->logPrefix/logGroup->logs<a name="line.126"></a>
-<span class="sourceLineNo">127</span> // For normal replication source, the peer id is same with the queue id<a name="line.127"></a>
-<span class="sourceLineNo">128</span> private final ConcurrentMap<String, Map<String, SortedSet<String>>> walsById;<a name="line.128"></a>
-<span class="sourceLineNo">129</span> // Logs for recovered sources we are currently tracking<a name="line.129"></a>
-<span class="sourceLineNo">130</span> // the map is: queue_id->logPrefix/logGroup->logs<a name="line.130"></a>
-<span class="sourceLineNo">131</span> // For recovered source, the queue id's format is peer_id-servername-*<a name="line.131"></a>
-<span class="sourceLineNo">132</span> private final ConcurrentMap<String, Map<String, SortedSet<String>>> walsByIdRecoveredQueues;<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> private final Configuration conf;<a name="line.134"></a>
-<span class="sourceLineNo">135</span> private final FileSystem fs;<a name="line.135"></a>
-<span class="sourceLineNo">136</span> // The paths to the latest log of each wal group, for new coming peers<a name="line.136"></a>
-<span class="sourceLineNo">137</span> private final Set<Path> latestPaths;<a name="line.137"></a>
-<span class="sourceLineNo">138</span> // Path to the wals directories<a name="line.138"></a>
-<span class="sourceLineNo">139</span> private final Path logDir;<a name="line.139"></a>
-<span class="sourceLineNo">140</span> // Path to the wal archive<a name="line.140"></a>
-<span class="sourceLineNo">141</span> private final Path oldLogDir;<a name="line.141"></a>
-<span class="sourceLineNo">142</span> private final WALFileLengthProvider walFileLengthProvider;<a name="line.142"></a>
-<span class="sourceLineNo">143</span> // The number of ms that we wait before moving znodes, HBASE-3596<a name="line.143"></a>
-<span class="sourceLineNo">144</span> private final long sleepBeforeFailover;<a name="line.144"></a>
-<span class="sourceLineNo">145</span> // Homemade executer service for replication<a name="line.145"></a>
-<span class="sourceLineNo">146</span> private final ThreadPoolExecutor executor;<a name="line.146"></a>
-<span class="sourceLineNo">147</span><a name="line.147"></a>
-<span class="sourceLineNo">148</span> private final boolean replicationForBulkLoadDataEnabled;<a name="line.148"></a>
-<span class="sourceLineNo">149</span><a name="line.149"></a>
+<span class="sourceLineNo">028</span>import java.util.NavigableSet;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.Set;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.SortedSet;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.TreeSet;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.UUID;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import java.util.concurrent.ConcurrentMap;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import java.util.concurrent.Future;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import java.util.concurrent.RejectedExecutionException;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import java.util.concurrent.TimeUnit;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import java.util.stream.Collectors;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.conf.Configuration;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.fs.FileSystem;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.fs.Path;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.HConstants;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.Server;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.ServerName;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.TableName;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.replication.ReplicationException;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.replication.ReplicationListener;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.replication.ReplicationPeer;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.replication.ReplicationPeer.PeerState;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.replication.ReplicationPeers;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.replication.ReplicationQueueInfo;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.replication.ReplicationQueueStorage;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.replication.ReplicationTracker;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.slf4j.Logger;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.slf4j.LoggerFactory;<a name="line.62"></a>
+<span class="sourceLineNo">063</span><a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span>/**<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * This class is responsible to manage all the replication sources. There are two classes of<a name="line.68"></a>
+<span class="sourceLineNo">069</span> * sources:<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * <ul><a name="line.70"></a>
+<span class="sourceLineNo">071</span> * <li>Normal sources are persistent and one per peer cluster</li><a name="line.71"></a>
+<span class="sourceLineNo">072</span> * <li>Old sources are recovered from a failed region server and our only goal is to finish<a name="line.72"></a>
+<span class="sourceLineNo">073</span> * replicating the WAL queue it had</li><a name="line.73"></a>
+<span class="sourceLineNo">074</span> * </ul><a name="line.74"></a>
+<span class="sourceLineNo">075</span> * <p><a name="line.75"></a>
+<span class="sourceLineNo">076</span> * When a region server dies, this class uses a watcher to get notified and it tries to grab a lock<a name="line.76"></a>
+<span class="sourceLineNo">077</span> * in order to transfer all the queues in a local old source.<a name="line.77"></a>
+<span class="sourceLineNo">078</span> * <p><a name="line.78"></a>
+<span class="sourceLineNo">079</span> * Synchronization specification:<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * <ul><a name="line.80"></a>
+<span class="sourceLineNo">081</span> * <li>No need synchronized on {@link #sources}. {@link #sources} is a ConcurrentHashMap and there<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * is a Lock for peer id in {@link PeerProcedureHandlerImpl}. So there is no race for peer<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * operations.</li><a name="line.83"></a>
+<span class="sourceLineNo">084</span> * <li>Need synchronized on {@link #walsById}. There are four methods which modify it,<a name="line.84"></a>
+<span class="sourceLineNo">085</span> * {@link #addPeer(String)}, {@link #removePeer(String)},<a name="line.85"></a>
+<span class="sourceLineNo">086</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and {@link #preLogRoll(Path)}.<a name="line.86"></a>
+<span class="sourceLineNo">087</span> * {@link #walsById} is a ConcurrentHashMap and there is a Lock for peer id in<a name="line.87"></a>
+<span class="sourceLineNo">088</span> * {@link PeerProcedureHandlerImpl}. So there is no race between {@link #addPeer(String)} and<a name="line.88"></a>
+<span class="sourceLineNo">089</span> * {@link #removePeer(String)}. {@link #cleanOldLogs(NavigableSet, String, boolean, String)} is<a name="line.89"></a>
+<span class="sourceLineNo">090</span> * called by {@link ReplicationSourceInterface}. So no race with {@link #addPeer(String)}.<a name="line.90"></a>
+<span class="sourceLineNo">091</span> * {@link #removePeer(String)} will terminate the {@link ReplicationSourceInterface} firstly, then<a name="line.91"></a>
+<span class="sourceLineNo">092</span> * remove the wals from {@link #walsById}. So no race with {@link #removePeer(String)}. The only<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * case need synchronized is {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and<a name="line.93"></a>
+<span class="sourceLineNo">094</span> * {@link #preLogRoll(Path)}.</li><a name="line.94"></a>
+<span class="sourceLineNo">095</span> * <li>No need synchronized on {@link #walsByIdRecoveredQueues}. There are three methods which<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * modify it, {@link #removePeer(String)} ,<a name="line.96"></a>
+<span class="sourceLineNo">097</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} and<a name="line.97"></a>
+<span class="sourceLineNo">098</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()}.<a name="line.98"></a>
+<span class="sourceLineNo">099</span> * {@link #cleanOldLogs(NavigableSet, String, boolean, String)} is called by<a name="line.99"></a>
+<span class="sourceLineNo">100</span> * {@link ReplicationSourceInterface}. {@link #removePeer(String)} will terminate the<a name="line.100"></a>
+<span class="sourceLineNo">101</span> * {@link ReplicationSourceInterface} firstly, then remove the wals from<a name="line.101"></a>
+<span class="sourceLineNo">102</span> * {@link #walsByIdRecoveredQueues}. And {@link ReplicationSourceManager.NodeFailoverWorker#run()}<a name="line.102"></a>
+<span class="sourceLineNo">103</span> * will add the wals to {@link #walsByIdRecoveredQueues} firstly, then start up a<a name="line.103"></a>
+<span class="sourceLineNo">104</span> * {@link ReplicationSourceInterface}. So there is no race here. For<a name="line.104"></a>
+<span class="sourceLineNo">105</span> * {@link ReplicationSourceManager.NodeFailoverWorker#run()} and {@link #removePeer(String)}, there<a name="line.105"></a>
+<span class="sourceLineNo">106</span> * is already synchronized on {@link #oldsources}. So no need synchronized on<a name="line.106"></a>
+<span class="sourceLineNo">107</span> * {@link #walsByIdRecoveredQueues}.</li><a name="line.107"></a>
+<span class="sourceLineNo">108</span> * <li>Need synchronized on {@link #latestPaths} to avoid the new open source miss new log.</li><a name="line.108"></a>
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+<span class="sourceLineNo">113</span>@InterfaceAudience.Private<a name="line.113"></a>
+<span class="sourceLineNo">114</span>public class ReplicationSourceManager implements ReplicationListener {<a name="line.114"></a>
+<span class="sourceLineNo">115</span> private static final Logger LOG = LoggerFactory.getLogger(ReplicationSourceManager.class);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> // all the sources that read this RS's logs and every peer only has one replication source<a name="line.116"></a>
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+<span class="sourceLineNo">125</span> // All about stopping<a name="line.125"></a>
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+<span class="sourceLineNo">127</span><a name="line.127"></a>
+<span class="sourceLineNo">128</span> // All logs we are currently tracking<a name="line.128"></a>
+<span class="sourceLineNo">129</span> // Index structure of the map is: queue_id->logPrefix/logGroup->logs<a name="line.129"></a>
+<span class="sourceLineNo">130</span> // For normal replication source, the peer id is same with the queue id<a name="line.130"></a>
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+<span class="sourceLineNo">132</span> // Logs for recovered sources we are currently tracking<a name="line.132"></a>
+<span class="sourceLineNo">133</span> // the map is: queue_id->logPrefix/logGroup->logs<a name="line.133"></a>
+<span class="sourceLineNo">134</span> // For recovered source, the queue id's format is peer_id-servername-*<a name="line.134"></a>
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+<span class="sourceLineNo">372</span> " state or config changed. Will close the previous replication source and open a new one";<a name="line.372"></a>
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-<span class="sourceLineNo">479</span> * @param queueId id of the replication queue<a name="line.479"></a>
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