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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-1545) Maps hang when using native compression library to compress map out
Date Thu, 11 Oct 2007 18:03:51 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy resolved HADOOP-1545.
-----------------------------------

    Resolution: Invalid

The last we checked there were a couple of application-level issues... I'm closing this for
now. Please feel free to re-open or file a new jira.

> Maps hang when using native compression library to compress map out
> -------------------------------------------------------------------
>
>                 Key: HADOOP-1545
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1545
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.13.0
>            Reporter: Hairong Kuang
>            Assignee: Arun C Murthy
>            Priority: Critical
>             Fix For: 0.15.0
>
>
> This issue is related to HADOOP-1193. I ran the same job. Each map of this job spawns
a process which generates output to be cosumed by the map. The new native compression librar
seems to hang some of the spawned processes. Some processes print using more than 100% CPU.
Non-native library does not produce this problem.

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