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https://issues.apache.org/jira/browse/HDFS-2820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13191326#comment-13191326
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Eli Collins commented on HDFS-2820:
-----------------------------------
+1
> Add a simple sanity check for HA config
> ---------------------------------------
>
> Key: HDFS-2820
> URL: https://issues.apache.org/jira/browse/HDFS-2820
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Trivial
> Attachments: hdfs-2820.txt
>
>
> If the user configures a shared edits dir, but doesn't configure the namenode
> addresses correctly, the NN will fail to start up in a very strange way.
> I had this misconfiguration in one of my test clusters which was difficult to
> debug, even though I'm very familiar with the code. This patch is to add a
> simple sanity check so that if a user has the same misconfiguration, it will
> fail to start and given a more informative dump.
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