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https://issues.apache.org/jira/browse/FLUME-2328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13916552#comment-13916552
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Jarek Jarcec Cecho commented on FLUME-2328:
-------------------------------------------
+1
> FileChannel Dual Checkpoint Backup Thread not released on Application stop
> --------------------------------------------------------------------------
>
> Key: FLUME-2328
> URL: https://issues.apache.org/jira/browse/FLUME-2328
> Project: Flume
> Issue Type: Bug
> Components: File Channel
> Affects Versions: v1.4.0
> Reporter: Arun
> Assignee: Hari Shreedharan
> Attachments: FLUME-2328.patch
>
>
> In my application wired the filechannel with dual checkpoint enabled. Even
> after calling application.stop() i can see checkpoint backup thread is still
> in waiting state.
> "[channel=c1] - CheckpointBackUpThread" prio=6 tid=0x3a069400 nid=0x8a4
> waiting on condition [0x3b17f000]
> Since i am usign java service wrapper to run application and for stopping
> service i am waiting all user threads to be released, service is not stopping
> gracefully even after waiting for 5 mins.
> in code i can see checkpointBackUpExecutor is started
> if (shouldBackup) {
> checkpointBackUpExecutor = Executors.newSingleThreadExecutor(
> new ThreadFactoryBuilder().setNameFormat( getName() + " -
> CheckpointBackUpThread").build());
> } else { checkpointBackUpExecutor = null; }
> ....
> there is no shutdown call for checkpointBackUpExecutor in anywhere in
> EventQueueBackingStoreFile
>
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