[jira] [Assigned] (RATIS-587) FinalizeLogSegment should flush the contents of log

["Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/RATIS-587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo Nicholas Sze reassigned RATIS-587:
-----------------------------------------

    Assignee: Tsz Wo Nicholas Sze

> FinalizeLogSegment should flush the contents of log
> ---------------------------------------------------
>
>                 Key: RATIS-587
>                 URL: https://issues.apache.org/jira/browse/RATIS-587
>             Project: Ratis
>          Issue Type: Bug
>          Components: LogService
>            Reporter: Supratim Deka
>            Assignee: Tsz Wo Nicholas Sze
>            Priority: Major
>
> SegmentedRaftLog uses a BufferedWriteChannel for writing the log.
> FinalizeLogSegment task is enqueued when a segment fills up. This task closes the channel and does cleanup.
> SegmentedRaftLogOutputStream.close() internally invokes BufferedWriteChannel.flush(false)
> the false passed to flush indicates not to flush the buffer cache.
> This means that the contents of the log file are not persisted on disk. An abrupt power failure could result in loss of committed log entries. 



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