Zookeeper service is down when SyncRequestProcessor meets any exception.
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Key: ZOOKEEPER-1109
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1109
Project: ZooKeeper
Issue Type: Bug
Components: quorum
Affects Versions: 3.3.3, 3.3.2, 3.3.1, 3.3.0
Reporter: Laxman
*Problem* Zookeeper is not shut down completely when dataDir disk space is full
and ZK Cluster went into unserviceable state.
*Scenario*
If the leader zookeeper disk is made full, the zookeeper is trying to shutdown.
But it is waiting indefinitely while shutting down the SyncRequestProcessor
thread.
*Root Cause*
this.join() is invoked in the same thread where System.exit(11) has been
triggered.
When disk space full happens, It got the exception as follows 'No space left on
device' and invoked System.exit(11) from the SyncRequestProcessor thread(The
following logs shows the same). Before exiting JVM, ZK will execute the
ShutdownHook of QuorumPeerMain and the flow comes to
SyncRequestProcessor.shutdown(). Here this.join() is invoked in the same thread
where System.exit(11) has been invoked.
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