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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-708) A stress-test tool for HDFS.
Date Mon, 22 Feb 2010 20:13:28 GMT

    [ https://issues.apache.org/jira/browse/HDFS-708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12836875#action_12836875
] 

Konstantin Shvachko commented on HDFS-708:
------------------------------------------

Yes, two mappers can choose the same file for append. One of them is supposed to fail - a
good test case.

> A stress-test tool for HDFS.
> ----------------------------
>
>                 Key: HDFS-708
>                 URL: https://issues.apache.org/jira/browse/HDFS-708
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: test, tools
>    Affects Versions: 0.22.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.22.0
>
>         Attachments: SLiveTest.pdf
>
>
> It would be good to have a tool for automatic stress testing HDFS, which would provide
IO-intensive load on HDFS cluster.
> The idea is to start the tool, let it run overnight, and then be able to analyze possible
failures.

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