HDFS-3860. HeartbeatManager#Monitor may wrongly hold the writelock of namesystem. Contributed by Jing Zhao.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1378228 13f79535-47bb-0310-9956-ffa450edef68
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@ -687,6 +687,9 @@ Branch-2 ( Unreleased changes )
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HDFS-3856. TestHDFSServerPorts failure is causing surefire fork failure.
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(eli)
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HDFS-3860. HeartbeatManager#Monitor may wrongly hold the writelock of
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namesystem. (Jing Zhao via atm)
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BREAKDOWN OF HDFS-3042 SUBTASKS
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HDFS-2185. HDFS portion of ZK-based FailoverController (todd)
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@ -223,10 +223,10 @@ class HeartbeatManager implements DatanodeStatistics {
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if (!allAlive) {
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// acquire the fsnamesystem lock, and then remove the dead node.
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namesystem.writeLock();
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if (namesystem.isInSafeMode()) {
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return;
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}
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try {
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if (namesystem.isInSafeMode()) {
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return;
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}
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synchronized(this) {
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dm.removeDeadDatanode(dead);
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}
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