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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4927) Part files on the output filesystem are created irrespective of whether the corresponding task has anything to write there
Date Tue, 23 Dec 2008 18:34:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HADOOP-4927:
-------------------------------------------

    Issue Type: New Feature  (was: Bug)

I was setting the "component/s" to mapred but not intended to change "issue type".  Changing
this back to "New Feature".

> Part files on the output filesystem are created irrespective of whether the corresponding
task has anything to write there
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-4927
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4927
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: mapred
>            Reporter: Devaraj Das
>             Fix For: 0.20.0
>
>
> When OutputFormat.getRecordWriter is invoked, a part file is created on the output filesystem.
But the created RecordWriter is not used until the OutputCollector.collect call is made by
the task (user's code). This results in empty part files even if the OutputCollector.collect
is never invoked by the corresponding tasks.

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