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https://issues.apache.org/jira/browse/HDFS-5845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13884927#comment-13884927
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Suresh Srinivas commented on HDFS-5845:
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[~andrew.wang], I am marking this as blocker for 2.3.0.
> SecondaryNameNode dies when checkpointing with cache pools
> ----------------------------------------------------------
>
> Key: HDFS-5845
> URL: https://issues.apache.org/jira/browse/HDFS-5845
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.3.0
> Reporter: Andrew Wang
> Assignee: Andrew Wang
>
> The SecondaryNameNode clears and reloads its FSNamesystem when doing
> checkpointing. However, FSNamesystem#clear does not clear CacheManager state
> during this reload. This leads to an error like the following:
> {noformat}
> org.apache.hadoop.fs.InvalidRequestException: Cache pool pool1 already exists.
> {noformat}
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