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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1441) Splittability of input should be controllable by application
Date Tue, 19 Jun 2007 20:47:26 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12506289

Hadoop QA commented on HADOOP-1441:


http://issues.apache.org/jira/secure/attachment/12360129/HADOOP-1441_1.patch applied and successfully
tested against trunk revision r548794.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/301/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/301/console

> Splittability of input should be controllable by application
> ------------------------------------------------------------
>                 Key: HADOOP-1441
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1441
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: mapred
>    Affects Versions: 0.12.3
>         Environment: ALL
>            Reporter: Milind Bhandarkar
>            Assignee: Milind Bhandarkar
>             Fix For: 0.14.0
>         Attachments: HADOOP-1441_1.patch
> Currently, isSplittable method of FileInputFormat always returns true. For some applications,
it becomes necessary that the map task process entire file, rather than a block. Therefore,
splittability of input (i.e. block-level split vs file-level-split) should be controllable
by user via a configuration variable. The default could be block-level split, as is.

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