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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11430) Separate class InnerNode from class NetworkTopology and make it extendable
Date Sat, 18 Feb 2017 01:30:44 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo Nicholas Sze updated HDFS-11430:
---------------------------------------
    Attachment: h11430_20170217.patch

h11430_20170217.patch: separates InnerNode to an interface and an implementation class, and
defines a Factory interface. 

> 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
>         Attachments: h11430_20170217.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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