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https://issues.apache.org/jira/browse/HDFS-11291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16918901#comment-16918901
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hemanthboyina commented on HDFS-11291:
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uploaded patch , please check [~surendrasingh]
> Avoid unnecessary edit log for setStoragePolicy() and setReplication()
> ----------------------------------------------------------------------
>
> Key: HDFS-11291
> URL: https://issues.apache.org/jira/browse/HDFS-11291
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Surendra Singh Lilhore
> Assignee: hemanthboyina
> Priority: Major
> Attachments: HDFS-11291.001.patch, HDFS-11291.002.patch,
> HDFS-11291.003.patch
>
>
> We are setting the storage policy for file without checking the current
> policy of file for avoiding extra getStoragePolicy() rpc call. Currently
> namenode is not checking the current storage policy before setting new one
> and adding edit logs. I think if the old and new storage policy is same we
> can avoid set operation.
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