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Posted to common-dev@hadoop.apache.org by "Christian Kunz (JIRA)" <ji...@apache.org> on 2007/05/07 21:21:15 UTC

[jira] Created: (HADOOP-1335) C++ reducers under hadoop-pipes are not started when there are no key-value pairs to be reduced

C++ reducers under hadoop-pipes are not started when there are no key-value pairs to be reduced
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                 Key: HADOOP-1335
                 URL: https://issues.apache.org/jira/browse/HADOOP-1335
             Project: Hadoop
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.12.3
            Reporter: Christian Kunz


Probably originally thought as a feature, Hadoop-Pipes does not start  a C++ reducer application when there are no key-values to be processed. Unfortunately, this does not allow to have certain common tasks performed by every reducer independent of key-value pairs. This is a requirement for our applications.

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[jira] Resolved: (HADOOP-1335) C++ reducers under hadoop-pipes are not started when there are no key-value pairs to be reduced

Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HADOOP-1335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Owen O'Malley resolved HADOOP-1335.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 0.14.0
         Assignee: Owen O'Malley

This was rolled into the patch for HADOOP-234.

> C++ reducers under hadoop-pipes are not started when there are no key-value pairs to be reduced
> -----------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1335
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1335
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.12.3
>            Reporter: Christian Kunz
>         Assigned To: Owen O'Malley
>             Fix For: 0.14.0
>
>
> Probably originally thought as a feature, Hadoop-Pipes does not start  a C++ reducer application when there are no key-values to be processed. Unfortunately, this does not allow to have certain common tasks performed by every reducer independent of key-value pairs. This is a requirement for our applications.

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You can reply to this email to add a comment to the issue online.