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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5845) SecondaryNameNode dies when checkpointing with cache pools
Date Wed, 29 Jan 2014 23:44:15 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13886011#comment-13886011
] 

Andrew Wang commented on HDFS-5845:
-----------------------------------

I'll also note that I bumped the timeout on that seemingly unrelated test since it flaked
twice for me at 30s.

> 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
>            Priority: Blocker
>              Labels: caching
>         Attachments: hdfs-5845-1.patch
>
>
> 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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