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https://issues.apache.org/jira/browse/HADOOP-1597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12512535
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Hadoop QA commented on HADOOP-1597:
-----------------------------------
+1
http://issues.apache.org/jira/secure/attachment/12361740/DistUpgradeStatus3.patch
applied and successfully tested against trunk revision r555813.
Test results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/403/testReport/
Console output:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/403/console
> Distributed upgrade status reporting and post upgrade features.
> ---------------------------------------------------------------
>
> Key: HADOOP-1597
> URL: https://issues.apache.org/jira/browse/HADOOP-1597
> Project: Hadoop
> Issue Type: New Feature
> Components: dfs
> Affects Versions: 0.14.0
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Priority: Blocker
> Fix For: 0.14.0
>
> Attachments: DistUpgradeStatus.patch, DistUpgradeStatus3.patch
>
>
> This patch introduces 2 additional features to the distributed upgrade
> framework,
> which turned out to be useful for the crc upgrade HADOOP-1134.
> 1. I introduce a DFSAdmin command
> -upgradeProgress status | details | force
> which retrieves current upgrade status, or its detailed status, or forces the
> upgrade to proceed if it is stuck.
> 2. If a data-node misses an upgrade it can still join the cluster if the
> respective upgrade object implements
> postUpgradeAction() method.
> The framework provides a default implementation of the features.
> For (1) any upgrade object returns by default a generic UpgradeStatusReport
> class, which contains
> only the version and the current status of the upgrade.
> An attempt to force the upgrade will have no effect except that the name-node
> will log "forceProceed() is not defined"
> For (2) the default implementation leads to a data-node shutdown, which is
> consistent with the former behavior.
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