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https://issues.apache.org/jira/browse/HDFS-9400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995843#comment-14995843
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Chris Nauroth commented on HDFS-9400:
-------------------------------------
HDFS-8332 was purposefully reverted from branch-2 due to a compatibility
concern. I'm surprised that this change would be required, and it might
indicate that some aspect of the compatibility problem has crept back into
branch-2.
I did some investigation and used {{git bisect}} to pin it down to HDFS-8979.
That's the first commit when the test started failing. That was supposed to be
a Checkstyle cleanup, but perhaps a logic change got in there too. It's a big
patch, so I'm still reviewing it.
[~liuml07], could you please take a look too?
> TestRollingUpgradeRollback fails on branch-2.
> ---------------------------------------------
>
> Key: HDFS-9400
> URL: https://issues.apache.org/jira/browse/HDFS-9400
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Chris Nauroth
> Assignee: Brahma Reddy Battula
> Priority: Blocker
> Attachments: HDFS-9400-branch-2.patch
>
>
> During a Jenkins pre-commit run on branch-2 for the HDFS-9394 patch, we
> noticed a pre-existing failure in {{TestRollingUpgradeRollback}}. I have
> confirmed that this test is failing in branch-2 only. It passes in trunk,
> and it passes in branch-2.7.
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