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https://issues.apache.org/jira/browse/HDFS-17171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tao Li resolved HDFS-17171.
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Fix Version/s: 3.4.0
Resolution: Fixed
> CONGESTION_RATIO should be configurable
> ---------------------------------------
>
> Key: HDFS-17171
> URL: https://issues.apache.org/jira/browse/HDFS-17171
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 3.4.0
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> Currently, The valuee of DataNode#CONGESTION_RATIO is 1.5 and it is not
> configurable.
> When the average load of a datanode in last one minute is higer than
> CONGESTION_RATIO * NUM_CORES, this datanode will be regard as CONGESTED.
> In most real production envs, the default value 1.5 seems not appropriate.
> So ,we should change this value to be configurable.
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