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https://issues.apache.org/jira/browse/HBASE-19731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16319551#comment-16319551
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stack commented on HBASE-19731:
-------------------------------

bq. So what is the plan for HLC? In which version will it land?

Unfortunately no one working on it at mo. Was stalled by need to improve perf 
(crossing a synchronize getting unique timestamp) and then our intern who was 
working on it has moved on.

> 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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