QuorumPeer takes a long time to shutdown
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Key: ZOOKEEPER-1060
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1060
Project: ZooKeeper
Issue Type: Bug
Components: quorum
Affects Versions: 3.4.0
Reporter: Vishal K
Assignee: Vishal K
Priority: Minor
Fix For: 3.4.0
This problem is seen only if you have ZooKeeper embedded in your application.
QuorumPeerMain.initializeAndRun() does a quorumPeer.join() before exiting.
QuorumPeer.shutdown() tries to cleanup everything, but it does not interrupt
itself. As a result, a if the peer is running FLE, it might be waiting to
receive notifications (recvqueue.poll()) in FastLeaderElection. Therefore,
quorumPeer.join() will wait until the peer wakes up from poll().
The fix is simple - call this.interrupt() in QuorumPeer.shutdown().
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