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https://issues.apache.org/jira/browse/HBASE-17482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15827546#comment-15827546
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Allan Yang commented on HBASE-17482:
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the failed test
org.apache.hadoop.hbase.regionserver.TestHRegion.testWritesWhileRollWriter and
org.apache.hadoop.hbase.regionserver.TestHRegion.testFlushCacheWhileScanning
are passed locally
> mvcc mechanism failed when using mvccPreAssign
> ----------------------------------------------
>
> Key: HBASE-17482
> URL: https://issues.apache.org/jira/browse/HBASE-17482
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.0..
> Reporter: Allan Yang
> Assignee: Allan Yang
> Priority: Critical
> Attachments: HBASE-17482.patch, HBASE-17482.v2.patch
>
>
> If mvccPreAssign and ASYNC_WAL is used, then cells may have been commited to
> memstore before append thread can stamp seqid to them. The unit test shows
> everything.
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