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https://issues.apache.org/jira/browse/HADOOP-1545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12514303
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Hairong Kuang commented on HADOOP-1545:
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+1
> 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: Blocker
> 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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