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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7719) BlockPoolSliceStorage#removeVolumes fails to remove some in-memory state associated with volumes
Date Thu, 05 Feb 2015 15:05:51 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14307360#comment-14307360
] 

Hudson commented on HDFS-7719:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #96 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/96/])
HDFS-7719. BlockPoolSliceStorage#removeVolumes fails to remove some in-memory state associated
with volumes. (Lei (Eddy) Xu via Colin P. McCabe) (cmccabe: rev 40a415799b1ff3602fbb461765f8b36f1133bda2)
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceStorage.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataStorage.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeHotSwapVolumes.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt


> BlockPoolSliceStorage#removeVolumes fails to remove some in-memory state associated with
volumes
> ------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-7719
>                 URL: https://issues.apache.org/jira/browse/HDFS-7719
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>             Fix For: 2.7.0
>
>         Attachments: HDFS-7719.000.patch, HDFS-7719.001.patch, HDFS-7719.002.patch, HDFS-7719.003.patch
>
>
> The parameter of {{BlockPoolSliceStorage#removeVolumes()}} is a set of volume level directories,
thus {{BlockPoolSliceStorage}} could not directly compare its own {{StorageDirs}} with this
volume-level directory. The result of that is {{BlockPoolSliceStorage}} did not actually remove
the targeted {{StorageDirectory}}. 
> It will cause failure when remove a volume and then immediately add a volume back with
the same mount point..



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