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https://issues.apache.org/jira/browse/HDFS-5138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers updated HDFS-5138:
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Attachment: HDFS-5138.patch
Pretty confident that the TestAvailableSpaceVolumeChoosingPolicy failure is a
spurious one. The rest seem legit, but are easily fixed by not checking for the
shared log lock in the case of initializing the shared edits, since of course
there can be no shared log lock if there is not yet any shared log.
The javadoc warnings are a little funny, since I don't think they're introduced
by this patch at all. I think I may have fixed one, but I can't actually see
what's wrong with the other. We'll see what test-patch has to say this time.
> Support HDFS upgrade in HA
> --------------------------
>
> Key: HDFS-5138
> URL: https://issues.apache.org/jira/browse/HDFS-5138
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.1.1-beta
> Reporter: Kihwal Lee
> Assignee: Aaron T. Myers
> Priority: Blocker
> Attachments: HDFS-5138.patch, HDFS-5138.patch, HDFS-5138.patch,
> HDFS-5138.patch, HDFS-5138.patch
>
>
> With HA enabled, NN wo't start with "-upgrade". Since there has been a layout
> version change between 2.0.x and 2.1.x, starting NN in upgrade mode was
> necessary when deploying 2.1.x to an existing 2.0.x cluster. But the only way
> to get around this was to disable HA and upgrade.
> The NN and the cluster cannot be flipped back to HA until the upgrade is
> finalized. If HA is disabled only on NN for layout upgrade and HA is turned
> back on without involving DNs, things will work, but finaliizeUpgrade won't
> work (the NN is in HA and it cannot be in upgrade mode) and DN's upgrade
> snapshots won't get removed.
> We will need a different ways of doing layout upgrade and upgrade snapshot.
> I am marking this as a 2.1.1-beta blocker based on feedback from others. If
> there is a reasonable workaround that does not increase maintenance window
> greatly, we can lower its priority from blocker to critical.
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