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https://issues.apache.org/jira/browse/HDFS-8945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14712888#comment-14712888
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Masatake Iwasaki commented on HDFS-8945:
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I'm updating the patch based on the comments. It would be better to add
explanation that replica placement policy is pluggable by implementing
{{BlockPlacementPolicy}} and setting the classname by
{{dfs.block.replicator.classname}}.
> Update the description about replica placement in HDFS Architecture
> documentation
> ---------------------------------------------------------------------------------
>
> Key: HDFS-8945
> URL: https://issues.apache.org/jira/browse/HDFS-8945
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Reporter: Masatake Iwasaki
> Assignee: Masatake Iwasaki
> Priority: Minor
> Attachments: HDFS-8945.001.patch
>
>
> The description about replica placement should have
> * Explanation about storage types and storage policies should be added
> * placement policy for replication factor greater than 4
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