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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9188) Make block corruption related tests FsDataset-agnostic.
Date Sat, 03 Oct 2015 00:39:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14942001#comment-14942001

Colin Patrick McCabe commented on HDFS-9188:

thanks, [~eddyxu].

{{ReplicaToCorrupt}}: it seems like this should be named something like {{MaterializedReplica}}.
 Its distinguishing factor is that it is the concrete representation of some replica in the

92    /**
93	     * Corrupt the block file by deleting it.
94	     * @return true if the deletion is completed.
95	     */
96	    boolean deleteData();
This should be able to throw an IOE.  Same with {{deleteMeta}}.

> Make block corruption related tests FsDataset-agnostic. 
> --------------------------------------------------------
>                 Key: HDFS-9188
>                 URL: https://issues.apache.org/jira/browse/HDFS-9188
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: HDFS, test
>    Affects Versions: 2.7.1
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>         Attachments: HDFS-9188.000.patch, HDFS-9188.001.patch
> Currently, HDFS does block corruption tests by directly accessing the files stored on
the storage directories, which assumes {{FsDatasetImpl}} is the dataset implementation. However,
with works like OZone (HDFS-7240) and HDFS-8679, there will be different FsDataset implementations.

> So we need a general way to run whitebox tests like corrupting blocks and crc files.

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