[jira] [Commented] (FLUME-2328) FileChannel Dual Checkpoint Backup Thread not released on Application stop

["Hari Shreedharan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLUME-2328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13907745#comment-13907745 ] 

Hari Shreedharan commented on FLUME-2328:
-----------------------------------------

This patch fixes this issue.

> 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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