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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 Sun, 01 Oct 2017 23:34:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187580#comment-16187580
] 

Hudson commented on HADOOP-3:
-----------------------------

FAILURE: Integrated in Jenkins build HBase-1.3-JDK7 #290 (See [https://builds.apache.org/job/HBase-1.3-JDK7/290/])
HBASE-17441 Fix invalid quoting around hadoop-3 build in yetus (busbey: rev d01b15f83fd465b1b75380122efe1e87b7909bed)
* (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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