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https://issues.apache.org/jira/browse/HBASE-27358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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chenglei updated HBASE-27358:
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Assignee: chenglei
Status: Patch Available (was: Open)
> Avoid synchronization in AsyncFSWAL
> -----------------------------------
>
> Key: HBASE-27358
> URL: https://issues.apache.org/jira/browse/HBASE-27358
> Project: HBase
> Issue Type: Improvement
> Components: wal
> Affects Versions: 3.0.0-alpha-3
> Reporter: chenglei
> Assignee: chenglei
> Priority: Major
>
> {{AsyncFSWAL}} uses {{consumeLock}} to synchronize operations between
> {{AsyncFSWAL.consumeExecutor}} and
> {{AsyncFSWAL.doReplaceWriter}}/{{AsyncFSWAL.doShutdown}}. If we try to make
> {{AsyncFSWAL.consumeExecutor}} to roll WAL at the safe point by itself, and
> {{AsyncFSWAL.doReplaceWriter}} just publishs the roll wal task and waits for
> the roll operation to complete, then we could avoid the synchronize
> operations in {{AsyncFSWAL}}.
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