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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-415) DFSNodesStatus() should sort data nodes.
Date Sat, 05 Aug 2006 09:03:15 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-415?page=all ]

Devaraj Das updated HADOOP-415:

    Attachment: refactor_datanodeinfo.patch

I mistakenly submitted the same patch file that I submitted the first time. Sorry. Thanks
to Konstantin for pointing it out. I have now placed the patch with just the DatanodeDescriptor
-> DatanodeInfo changes. This will apply cleanly to the current trunk.

> DFSNodesStatus() should sort data nodes.
> ----------------------------------------
>                 Key: HADOOP-415
>                 URL: http://issues.apache.org/jira/browse/HADOOP-415
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.4.0
>            Reporter: Konstantin Shvachko
>             Fix For: 0.5.0
>         Attachments: refactor_datanodeinfo.patch, refactor_nodestatus.patch, refactor_nodestatus.patch
> HADOOP-392 introduced a new TreeMap member (datanodeMapByName) in the name node.
> It is used solely for reporting the data nodes in the UI sorted by their names.
> I think it is quite inefficient both time and space-wise to support an excessive
> data structure just for that.
> Suppose the UI will also require sorting by last heartbeat and/or by the available space....
> I think DFSNodesStatus() should just sort the original datanodeMap before returning the

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