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https://issues.apache.org/jira/browse/HBASE-24167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Stack resolved HBASE-24167.
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Fix Version/s: 2.2.5
Assignee: Michael Stack
Resolution: Fixed
Helps w/ test flakyness. There is probably issue in here when in-memory
compaction enabled but have not dug in.
> [Flakey Tests] TestHRegionWithInMemoryFlush#testWritesWhileScanning gets
> stuck MVCC
> -----------------------------------------------------------------------------------
>
> Key: HBASE-24167
> URL: https://issues.apache.org/jira/browse/HBASE-24167
> Project: HBase
> Issue Type: Bug
> Reporter: Michael Stack
> Assignee: Michael Stack
> Priority: Major
> Fix For: 3.0.0, 2.3.0, 2.2.5
>
> Attachments:
> 0001-HBASE-24167-Flakey-Tests-TestHRegionWithInMemoryFlus.patch
>
>
> I see this in recent nightly fails on branch-2, my experimental branch. It
> happened in the two builds last night. It was only test to fail. Both failed
> with:
> 2020-04-10 07:42:46,700 WARN [Time-limited test]
> regionserver.MultiVersionConcurrencyControl(228): STUCK:
> MultiVersionConcurrencyControl{readPoint=8684, writePoint=8686}
> I ran the test in my harness and it pushes up against heap limits for sure,
> especially after recent cut down in forked jvm size.
> For now, see if alleviating scope of testWritesWhileScanning just when called
> from this test helps w/ flakeyness. Probably worth a deep dive why we get
> into this state w/ in-memory compaction.
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