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https://issues.apache.org/jira/browse/RATIS-1596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Song Ziyang resolved RATIS-1596.
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Resolution: Not A Problem
> Sync PurgeLog will block WriteLog
> ---------------------------------
>
> Key: RATIS-1596
> URL: https://issues.apache.org/jira/browse/RATIS-1596
> Project: Ratis
> Issue Type: Improvement
> Reporter: Song Ziyang
> Priority: Major
>
> Currently, all RaftLog IO Tasks will be handed to SegmentRaftLogWorker,
> including WriteLog & PurgeLog. Since SegmentRaftLogWorker is a single thread,
> a time consuming PurgeLog will block the subsequent WriteLog tasks, leading
> to follower unable to commit log and respond to leader's AppendEntry RPC.
> PurgeLog itself will not affect other IO tasks, is it possible and it can be
> done asynchronously by another thread?
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