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From "He Tianyi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9149) Consider multi datacenter when sortByDistance
Date Sun, 27 Sep 2015 13:38:07 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14909740#comment-14909740
] 

He Tianyi commented on HDFS-9149:
---------------------------------

The default {{NetworkTopology}} is not dc aware. Perhaps implement a custom one with datacenter
location awareness and override {{sortByDistance}}?

> Consider multi datacenter when sortByDistance
> ---------------------------------------------
>
>                 Key: HDFS-9149
>                 URL: https://issues.apache.org/jira/browse/HDFS-9149
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: He Xiaoqiao
>
> {{sortByDistance}} doesn't consider multi-datacenter when read data, so there my be reading
data via other datacenter when hadoop deployment with multi-IDC.



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