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https://issues.apache.org/jira/browse/HDFS-11430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Liang updated HDFS-11430:
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Attachment: HDFS-11430-branch-2.001.patch
Post a patch for branch-2
> Separate class InnerNode from class NetworkTopology and make it extendable
> --------------------------------------------------------------------------
>
> Key: HDFS-11430
> URL: https://issues.apache.org/jira/browse/HDFS-11430
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Chen Liang
> Assignee: Tsz Wo Nicholas Sze
> Fix For: 3.0.0-alpha3
>
> Attachments: h11430_20170217.patch, h11430_20170218.patch,
> HDFS-11430-branch-2.001.patch
>
>
> The approach we will take in HDFS-11419 is to annotate topology's inner node
> with more information, such that it chooses a subtree that meets storage type
> requirement. However, {{InnerNode}} is not specific to HDFS, so our change
> should affect other components using this class.
> This JIRA separates {{InnerNode}} out of {{NetworkTopology}} and makes it
> extendable. Therefore HDFS can have it's own customized inner node class,
> while other services can still have inner node as what it is right now.
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