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From "Eli Collins (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-8144) pseudoSortByDistance in NetworkTopology doesn't work properly if no local node and first node is local rack node
Date Wed, 11 Apr 2012 23:49:17 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HADOOP-8144:
--------------------------------

    Attachment: hadoop-8144.txt

Same patch, just the common side. Filed HDFS-3258 for the test.
                
> pseudoSortByDistance in NetworkTopology doesn't work properly if no local node and first
node is local rack node
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8144
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8144
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 1.0.0, 0.23.0
>            Reporter: Junping Du
>            Assignee: Junping Du
>            Priority: Minor
>              Labels: patch
>         Attachments: HADOOP-8144-1.patch, HADOOP-8144-v2.patch, hadoop-8144.txt, hadoop-8144.txt
>
>
> pseudoSortByDistance in NetworkTopology.java should sort nodes according to its distance
with reader as local node, local rack node, ... 
> But if there is no local node with reader in nodes and the first node is local rack node
with reader, then it will put a random node at position 0.

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