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https://issues.apache.org/jira/browse/HBASE-18290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16067393#comment-16067393
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Umesh Agashe commented on HBASE-18290:
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+1 lgtm
> Fix TestAddColumnFamilyProcedure and TestDeleteTableProcedure
> -------------------------------------------------------------
>
> Key: HBASE-18290
> URL: https://issues.apache.org/jira/browse/HBASE-18290
> Project: HBase
> Issue Type: Bug
> Components: test
> Affects Versions: 2.0.0
> Reporter: stack
> Assignee: stack
> Fix For: 2.0.0
>
> Attachments: HBASE-18290.master.001.patch
>
>
> These two tests don't pass. Turns out the cause was interesting.
> We added a workaround for case where procedure WAL could have procs out of
> order.
> HBASE-18216 [AMv2] Workaround for HBASE-18152, corrupt procedure WAL
> If we find a procedure that is not 'increasing' -- of a later timestamp or
> procid -- then we'd skip the application of the 'old' proc. The workaround
> was until we figure in what scenarios we can write procedures out of order
> (seems to be rare and high-concurrency... TBD).
> These two tests trip FAILs and ROLLBACKs (double delete of table or disable
> of an already disabled table). They are good tests. But procedures that get
> marked FAIL or ROLLEDBACK will have procids that are less than current. Makes
> it so we skipped adding the ROLLBACK and so finishing up the procedure.
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