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https://issues.apache.org/jira/browse/HDFS-15255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen O'Donnell updated HDFS-15255:
-------------------------------------
Resolution: Fixed
Status: Resolved (was: Patch Available)
> Consider StorageType when DatanodeManager#sortLocatedBlock()
> ------------------------------------------------------------
>
> Key: HDFS-15255
> URL: https://issues.apache.org/jira/browse/HDFS-15255
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Lisheng Sun
> Assignee: Lisheng Sun
> Priority: Major
> Fix For: 3.3.1, 3.4.0
>
> Attachments: HDFS-15255-findbugs-test.001.patch,
> HDFS-15255.001.patch, HDFS-15255.002.patch, HDFS-15255.003.patch,
> HDFS-15255.004.patch, HDFS-15255.005.patch, HDFS-15255.006.patch,
> HDFS-15255.007.patch, HDFS-15255.008.patch, HDFS-15255.009.patch,
> HDFS-15255.010.patch, experiment-find-bugs.001.patch
>
>
> When only one replica of a block is SDD, the others are HDD.
> When the client reads the data, the current logic is that it considers the
> distance between the client and the dn. I think it should also consider the
> StorageType of the replica. Priority to return fast StorageType node when the
> distance is same.
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