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https://issues.apache.org/jira/browse/HBASE-23157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16955685#comment-16955685
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Lijin Bin commented on HBASE-23157:
-----------------------------------
[~zhangduo]
The wal.sync is called after wal.startCacheFlush(encodedRegionName,
flushedFamilyNamesToSeq); , we need to call it before wal.startCacheFlush.
> WAL unflushed seqId tracking may wrong when Durability.ASYNC_WAL is used
> ------------------------------------------------------------------------
>
> Key: HBASE-23157
> URL: https://issues.apache.org/jira/browse/HBASE-23157
> Project: HBase
> Issue Type: Bug
> Components: regionserver, wal
> Affects Versions: 2.2.1
> Reporter: Lijin Bin
> Assignee: Lijin Bin
> Priority: Major
> Attachments: HBASE-23157-master-v1.patch
>
>
> Durability.ASYNC_WAL do not wait wal sync and commit mvcc ahead. So when
> region start flush may get a large flushedSeqId and later wal process buffer
> entry and put a small unflushedSequenceIds for this region again.
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