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https://issues.apache.org/jira/browse/HDFS-9087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Elliott Clark updated HDFS-9087:
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Resolution: Fixed
Status: Resolved (was: Patch Available)
This was pushed a while ago.
> Add some jitter to DataNode.checkDiskErrorThread
> ------------------------------------------------
>
> Key: HDFS-9087
> URL: https://issues.apache.org/jira/browse/HDFS-9087
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.6.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Attachments: HDFS-9087-v0.patch, HDFS-9087-v1.patch,
> HDFS-9087-v2.patch, HDFS-9087-v3.patch
>
>
> If all datanodes are started across a cluster at the same time (or errors in
> the network cause ioexceptions) there can be storms where lots of datanodes
> check their disks at the exact same time.
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