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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5589) Namenode loops caching and uncaching when data should be uncached
Date Tue, 07 Jan 2014 14:45:55 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13864291#comment-13864291
] 

Hudson commented on HDFS-5589:
------------------------------

SUCCESS: Integrated in Hadoop-Mapreduce-trunk #1662 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1662/])
HDFS-5589. Namenode loops caching and uncaching when data should be uncached. (awang via cmccabe)
(cmccabe: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1555996)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/CacheReplicationMonitor.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestFsDatasetCache.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCacheDirectives.java


> 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: Andrew Wang
>         Attachments: hdfs-5589-1.patch, hdfs-5589-2.patch
>
>
> 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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