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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-3) Output directories are not cleaned up before the reduces run
Date Mon, 02 Oct 2017 01:45:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187624#comment-16187624

Hudson commented on HADOOP-3:

SUCCESS: Integrated in Jenkins build HBase-1.2-JDK8 #224 (See [https://builds.apache.org/job/HBase-1.2-JDK8/224/])
HBASE-17441 Fix invalid quoting around hadoop-3 build in yetus (busbey: rev 54ecaa94e4beb0b6d3a08de4b138fe193a804017)
* (edit) dev-support/hbase-personality.sh

> Output directories are not cleaned up before the reduces run
> ------------------------------------------------------------
>                 Key: HADOOP-3
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.1.0
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>            Priority: Minor
>             Fix For: 0.1.0
>         Attachments: clean-out-dir.patch, noclobber.patch
> The output directory for the reduces is not cleaned up and therefore if you can see left
overs from previous runs, if they had more reduces. For example, if you run the application
once with reduces=10 and then rerun with reduces=8, your output directory will have frag00000
to frag00009 with the first 8 fragments from the second run and the last 2 fragments from
the first run.

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