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https://issues.apache.org/jira/browse/HBASE-22681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16883804#comment-16883804
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Duo Zhang commented on HBASE-22681:
-----------------------------------
OK the problem is not race, we do not remove entries from unackedAppends when
syncFailed so if it fail multiple times we will add the same entry multiple
times to the unackedAppends...
IIRC in the past I made use of a TreeSet to store the unackedAppends and then
changed to a Deque... But here I think we still need to use a Set. Let me check
the commit history to see what happened...
> The 'assert highestUnsyncedTxid < entry.getTxid();' in AbstractFWAL.append
> may fail when using AsyncFSWAL
> ---------------------------------------------------------------------------------------------------------
>
> Key: HBASE-22681
> URL: https://issues.apache.org/jira/browse/HBASE-22681
> Project: HBase
> Issue Type: Bug
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Critical
> Fix For: 3.0.0, 2.3.0, 2.0.6, 2.2.1, 2.1.6
>
> Attachments: HBASE-22665-UT.patch
>
>
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