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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10359) Allow trigger block report from all datanodes
Date Tue, 03 May 2016 17:09:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15269106#comment-15269106
] 

Kihwal Lee commented on HDFS-10359:
-----------------------------------

Although this will be an excellent stress test tool, it will probably be best to not make
it easy for users to unleash the beast.
If an admin somehow wants to do it, one can write a simple script to get the list of nodes
and issue the existing dfsadmin command to all nodes.

> Allow trigger block report from all datanodes
> ---------------------------------------------
>
>                 Key: HDFS-10359
>                 URL: https://issues.apache.org/jira/browse/HDFS-10359
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.7.0, 2.6.1
>            Reporter: Tao Jie
>
> Since we have HDFS-7278 allows trigger block report from one certain datanode. It would
be helpful to add a option to this command to trigger block report from all datanodes.
> Command maybe like this:
> *hdfs dfsadmin -triggerBlockReport \[-incremental\] <datanode_host:ipc_port|all>*



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