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https://issues.apache.org/jira/browse/HBASE-19731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16317512#comment-16317512
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stack commented on HBASE-19731:
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bq. What do you think stack?
Each edit having its own unique timestamp would solve a bunch of mysterious
issues we see in tests but also in prod.
Your suggestion is nice and straightforward.
I hate having a running counter already that is close to what is needed here --
MVCC -- and then a system that is almost done -- HLC -- that would fix this
issue in a manner that could be depended upon cluster-wide never mind inside
region-scope only. HLC is so close...
What you think [~Apache9]
> TestFromClientSide#testCheckAndDeleteWithCompareOp and testNullQualifier are
> flakey
> -----------------------------------------------------------------------------------
>
> Key: HBASE-19731
> URL: https://issues.apache.org/jira/browse/HBASE-19731
> Project: HBase
> Issue Type: Sub-task
> Components: test
> Reporter: stack
> Assignee: Duo Zhang
> Priority: Critical
> Fix For: 2.0.0-beta-1
>
> Attachments: HBASE-19731.patch
>
>
> These two tests fail frequently locally; rare does this suite pass.
> The failures are either of these two tests. Unfortunately, running the test
> standalone does not bring on the issue; need to run the whole suite.
> In both cases, we have a Delete followed by a Put and then a checkAnd* -type
> operation which does a Get expecting to find the just put Put but it fails on
> occasion.
> Looks to be an mvcc issues or Put going in at same timestamp as the Delete.
> Its hard to debug given any added logging seems to make it all pass again.
> Seems this too is new in beta-1. Running tests against alpha-4 seem to pass.
> Doing a compare....
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