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https://issues.apache.org/jira/browse/HDFS-5313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13795449#comment-13795449
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Chris Nauroth commented on HDFS-5313:
-------------------------------------
FYI, I'll retest this while reviewing HDFS-5096 (and likely resolve as
duplicate).
> NameNode hangs during startup trying to apply
> OP_ADD_PATH_BASED_CACHE_DIRECTIVE.
> --------------------------------------------------------------------------------
>
> Key: HDFS-5313
> URL: https://issues.apache.org/jira/browse/HDFS-5313
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: HDFS-4949
> Reporter: Chris Nauroth
>
> During namenode startup, if the edits contain a
> {{OP_ADD_PATH_BASED_CACHE_DIRECTIVE}} for an existing file, then the process
> hangs while trying to apply the op. This is because of a call to
> {{FSDirectory#setCacheReplication}}, which calls
> {{FSDirectory#waitForReady}}, but of course nothing is ever going to mark the
> directory ready, because it's still in the process of loading.
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