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https://issues.apache.org/jira/browse/HDFS-2579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-2579:
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Issue Type: Sub-task (was: Bug)
Parent: HDFS-1623
> Starting delegation token manager during safemode fails
> -------------------------------------------------------
>
> Key: HDFS-2579
> URL: https://issues.apache.org/jira/browse/HDFS-2579
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node, security
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
>
> I noticed this on the HA branch, but it seems to actually affect non-HA
> branch 0.23 if security is enabled. When the NN starts up, if security is
> enabled, we start the delegation token secret manager, which then tries to
> call {{logUpdateMasterKey}}. This fails because the edit logs may not be
> written while in safe-mode.
> It seems to me that there's not any necessary reason that you have to make a
> new master key at startup, since you've loaded the old key when you load the
> FSImage. You'd only be lacking a DT master key on a fresh cluster, in which
> case we could have it generate one at format time.
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