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https://issues.apache.org/jira/browse/HDFS-11450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Liang updated HDFS-11450:
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Status: Patch Available (was: Open)
> HDFS specific network topology classes with storage type info included
> ----------------------------------------------------------------------
>
> Key: HDFS-11450
> URL: https://issues.apache.org/jira/browse/HDFS-11450
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Chen Liang
> Assignee: Chen Liang
> Attachments: HDFS-11450.001.patch
>
>
> This JIRA adds storage type info into network topology.
> More specifically, this JIRA adds a storage type map by extending
> {{InnerNodeImpl}} to describe the available storages under the current node's
> subtree. This map is updated when a node is added/removed from the subtree.
> With this info, when choosing a random node with storage type requirement,
> the search could then decide to/not to go deeper into a subtree by examining
> the available storage types first.
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