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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9005) Provide support for upgrade domain script
Date Fri, 04 Mar 2016 22:39:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15180669#comment-15180669
] 

Lei (Eddy) Xu commented on HDFS-9005:
-------------------------------------

Hey, [~mingma] sorry for the late reply and thanks for the explanation.

Looking forward to see the newly updated patch!

> Provide support for upgrade domain script
> -----------------------------------------
>
>                 Key: HDFS-9005
>                 URL: https://issues.apache.org/jira/browse/HDFS-9005
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>         Attachments: HDFS-9005.patch
>
>
> As part of the upgrade domain feature, we need to provide a mechanism to specify upgrade
domain for each datanode. One way to accomplish that is to allow admins specify an upgrade
domain script that takes DN ip or hostname as input and return the upgrade domain. Then namenode
will use it at run time to set {{DatanodeInfo}}'s upgrade domain string. The configuration
can be something like:
> {noformat}
> <property>
> <name>dfs.namenode.upgrade.domain.script.file.name</name>
> <value>/etc/hadoop/conf/upgrade-domain.sh</value>
> </property>
> {noformat}
> just like topology script, 



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