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https://issues.apache.org/jira/browse/HADOOP-3293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644460#action_12644460
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dhruba borthakur commented on HADOOP-3293:
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> DFS would override this method and will return the rack information along
> with the hosts.
This is a good idea, but returning only rack location might not work in the
general case when there are more than 2 levels in the network topology. Knowing
the name of a rack might not tell you how close it is to another rack. But
getFileBlockLocations could return the complete path of the host in the network
topology. I will provide a patch for this one. See HADOOP-4567
> When an input split spans cross block boundary, the split location should be
> the host having most of bytes on it.
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-3293
> URL: https://issues.apache.org/jira/browse/HADOOP-3293
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Runping Qi
> Assignee: Jothi Padmanabhan
>
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