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Posted to issues@ratis.apache.org by "Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org> on 2019/06/13 21:22:00 UTC
[jira] [Updated] (RATIS-587) FinalizeLogSegment should flush the
contents of log
[ https://issues.apache.org/jira/browse/RATIS-587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo Nicholas Sze updated RATIS-587:
--------------------------------------
Component/s: (was: LogService)
server
> 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: server
> 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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