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https://issues.apache.org/jira/browse/HADOOP-6433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zheng Shao updated HADOOP-6433:
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Attachment: HADOOP-6433.3.branch_20.patch
This is for hadoop 0.20. May be useful for Y!/Cloudera distribution of Hadoop
0.20.
> Add AsyncDiskService that is used in both hdfs and mapreduce
> ------------------------------------------------------------
>
> Key: HADOOP-6433
> URL: https://issues.apache.org/jira/browse/HADOOP-6433
> Project: Hadoop Common
> Issue Type: New Feature
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Fix For: 0.22.0
>
> Attachments: HADOOP-6433.1.patch, HADOOP-6433.2.patch,
> HADOOP-6433.3.branch_20.patch, HADOOP-6433.3.patch
>
>
> Both MAPREDUCE-1213 and HDFS-611 are using a class called AsyncDiskService.
> The idea is to create a thread pool per disk volume, and use that for
> scheduling async disk operations.
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