[jira] [Commented] (RATIS-443) FollowerState.inLogSync can be incorrectly cleared in appendEntriesAsync

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

    [ https://issues.apache.org/jira/browse/RATIS-443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16705569#comment-16705569 ] 

Tsz Wo Nicholas Sze commented on RATIS-443:
-------------------------------------------

r443_20181130.patch: counts the number of outstanding ops.

> FollowerState.inLogSync can be incorrectly cleared in appendEntriesAsync
> ------------------------------------------------------------------------
>
>                 Key: RATIS-443
>                 URL: https://issues.apache.org/jira/browse/RATIS-443
>             Project: Ratis
>          Issue Type: Bug
>          Components: server
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>            Priority: Major
>         Attachments: r443_20181130.patch
>
>
> FollowerState.inLogSync is to indicate that the follower is writing log/statemachine data. So that it should not time out to start a leader election. However, it is not working correctly in the async case: suppose there are two or more outstanding appendEntriesAsync calls, the first completed call will clear inLogSync even if the other calls are still in progress.



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