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https://issues.apache.org/jira/browse/HDFS-5188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13767341#comment-13767341
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Junping Du commented on HDFS-5188:
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Thanks for quickly response, Nicholas!
3. Agree. It may be helpful for RAID cases. Just curious on where the code of
BlockPlaceementPolicyRaid going? I remember we used to have that. Am I missing
anything here?
4. Sure. Just filed HDFS-5207 to address this.
I will review your new patch soon. Thx!
> Clean up BlockPlacementPolicy and its implementations
> -----------------------------------------------------
>
> Key: HDFS-5188
> URL: https://issues.apache.org/jira/browse/HDFS-5188
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h5188_20130912b.patch, h5188_20130912.patch,
> h5188_20130914.patch
>
>
> Below is a list of code cleanup tasks for BlockPlacementPolicy and its
> implementations:
> - Define constants for dfs.block.replicator.classname.
> - Combine adjustExcludedNodes and addToExcludedNodes: subclasses should
> always add all the related nodes in addToExcludedNodes(..).
> - Remove duplicated code.
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