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From "Lin Yiqun (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9468) DfsAdmin command set dataXceiver count for datanode
Date Wed, 25 Nov 2015 08:49:10 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lin Yiqun updated HDFS-9468:
----------------------------
    Attachment: HDFS-9468.001.patch

I add a new dfsadmin command {{t[-setDataXceiverCount <xceiverCount> " +
+    "[datanode_host1:ipc_port,datanode_host2:ipc_port,...]]}}, the param nodes can be one
or one more.

> DfsAdmin command set dataXceiver count for datanode
> ---------------------------------------------------
>
>                 Key: HDFS-9468
>                 URL: https://issues.apache.org/jira/browse/HDFS-9468
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.7.1
>            Reporter: Lin Yiqun
>            Assignee: Lin Yiqun
>         Attachments: HDFS-9468.001.patch
>
>
> Now in every datanode,concurrent xceivers count value are all set by {{DFSConfigKeys.DFS_DATANODE_MAX_RECEIVER_THREADS_DEFAULT}}.And
if you want to set this value for different values because some node has lower memory or cores.Then
you must to change the config and restart datanode.So may be we can dynamic set dataxceiver
count by a dfsadmin command and we can set value for one or many specific nodes.



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