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Posted to hdfs-dev@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2013/12/02 20:30:36 UTC

[jira] [Created] (HDFS-5589) Namenode loops caching and uncaching when data should be uncached

Andrew Wang created HDFS-5589:
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             Summary: Namenode loops caching and uncaching when data should be uncached
                 Key: HDFS-5589
                 URL: https://issues.apache.org/jira/browse/HDFS-5589
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: caching, namenode
    Affects Versions: 3.0.0
            Reporter: Andrew Wang
            Assignee: Colin Patrick McCabe


This was reported by [~cnauroth] and [~brandonli], and [~schu] repro'd it too.

If you add a new caching directive then remove it, the Namenode will sometimes get stuck in a loop where it sends DNA_CACHE and then DNA_UNCACHE repeatedly to the datanodes where the data was previously cached.



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