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https://issues.apache.org/jira/browse/HDFS-16397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takanobu Asanuma resolved HDFS-16397.
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Fix Version/s: 3.4.0
Resolution: Fixed
Merged to trunk. I will try to backport it into branch-3.3 later.
> Reconfig slow disk parameters for datanode
> ------------------------------------------
>
> Key: HDFS-16397
> URL: https://issues.apache.org/jira/browse/HDFS-16397
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: tomscut
> Assignee: tomscut
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Time Spent: 3h
> Remaining Estimate: 0h
>
> In large clusters, rolling restart datanodes takes long time. We can make
> slow peers parameters and slow disks parameters in datanode reconfigurable to
> facilitate cluster operation and maintenance.
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