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Posted to common-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2015/05/02 19:51:06 UTC
[jira] [Updated] (HADOOP-8928) Add ability to reset topologies on
master nodes
[ https://issues.apache.org/jira/browse/HADOOP-8928?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Allen Wittenauer updated HADOOP-8928:
-------------------------------------
Attachment: HADOOP-8928.patch
> Add ability to reset topologies on master nodes
> -----------------------------------------------
>
> Key: HADOOP-8928
> URL: https://issues.apache.org/jira/browse/HADOOP-8928
> Project: Hadoop Common
> Issue Type: Improvement
> Components: net
> Affects Versions: 3.0.0, 2.0.2-alpha
> Reporter: Shinichi Yamashita
> Attachments: HADOOP-8928.patch, HADOOP-8928.txt
>
>
> For a topology decision of DataNode and TaskTracker, ScriptBasedMapping (probably TableMapping) confirms HashMap first.
> To decide topology of DataNode and TaskTracker again, it is necessary to restart NameNode and JobTracker.
> Therefore, it is necessary to change (or clear) HashMap function without restarting NameNode and JobTracker.
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