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From "Lin Yiqun (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9685) StopDecommission for datanode should remove the underReplicatedBlocks
Date Fri, 22 Jan 2016 14:04:39 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Lin Yiqun updated HDFS-9685:
    Attachment: HDFS-9685.001.patch

> StopDecommission for datanode should remove the underReplicatedBlocks
> ---------------------------------------------------------------------
>                 Key: HDFS-9685
>                 URL: https://issues.apache.org/jira/browse/HDFS-9685
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.1
>            Reporter: Lin Yiqun
>            Assignee: Lin Yiqun
>         Attachments: HDFS-9685.001.patch
> When one node removed from exclude file, and its state from decommission-in-progress
to in service. But the underReplicatedBlocksNum of cluster has not been decreased. Most of
these underReplicatedBlocks are not needed and it will costs namenode much time to deal with.
And frequently namenode will find there are enough replications. So in {{stopDecommissioned}}
operation, we should remove neededReplicatedBlocks of decomNodes.

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