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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10372) Fix for failing TestFsDatasetImpl#testCleanShutdownOfVolume
Date Mon, 09 May 2016 13:23:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15276350#comment-15276350

Kihwal Lee commented on HDFS-10372:

[~shahrs87], it's up to you to decide whether to improve it as [~iwasakims] suggested.

> Fix for failing TestFsDatasetImpl#testCleanShutdownOfVolume
> -----------------------------------------------------------
>                 Key: HDFS-10372
>                 URL: https://issues.apache.org/jira/browse/HDFS-10372
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 2.7.3
>            Reporter: Rushabh S Shah
>            Assignee: Rushabh S Shah
>         Attachments: HDFS-10372.patch
> TestFsDatasetImpl#testCleanShutdownOfVolume fails very often.
> We added more debug information in HDFS-10260 to find out why this test is failing.
> Now I think I know the root cause of failure.
> I thought that {{LocatedBlock#getLocations()}} returns an array of DatanodeInfo but now
I realized that it returns an array of DatandeStorageInfo (which is subclass of DatanodeInfo).
> In the test I intended to check whether the exception contains the xfer address of the
DatanodeInfo. Since {{DatanodeInfo#toString()}} method returns the xfer address, I checked
whether exception contains {{DatanodeInfo#toString}} or not.
> But since  {{LocatedBlock#getLocations()}} returned an array of DatanodeStorageInfo,
it has storage info in the toString() implementation.

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