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https://issues.apache.org/jira/browse/HDFS-17887?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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fanluo reassigned HDFS-17887:
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Assignee: (was: fanluo)
> Avoid slow disks datanode when reading data
> -------------------------------------------
>
> Key: HDFS-17887
> URL: https://issues.apache.org/jira/browse/HDFS-17887
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: fanluo
> Priority: Major
>
> During HDFS read operations, replicas on slow disks should be deprioritized
> so that replicas on healthy disks are preferred
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