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Posted to hdfs-issues@hadoop.apache.org by "Ayush Saxena (Jira)" <ji...@apache.org> on 2020/01/14 16:23:00 UTC

[jira] [Commented] (HDFS-15120) Refresh BlockPlacementPolicy at runtime.

    [ https://issues.apache.org/jira/browse/HDFS-15120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17015202#comment-17015202 ] 

Ayush Saxena commented on HDFS-15120:
-------------------------------------

We have {color:#808080}ReconfigurationProtocol. {color}Can we use that. Add BPP as a reconfigurable property?

> Refresh BlockPlacementPolicy at runtime.
> ----------------------------------------
>
>                 Key: HDFS-15120
>                 URL: https://issues.apache.org/jira/browse/HDFS-15120
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Jinglun
>            Assignee: Jinglun
>            Priority: Major
>         Attachments: HDFS-15120.001.patch
>
>
> Now if we want to switch BlockPlacementPolicies we need to restart the NameNode. It would be convenient if we can switch it at runtime. For example we can switch between AvailableSpaceBlockPlacementPolicy and BlockPlacementPolicyDefault as needed.



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