[ http://issues.apache.org/jira/browse/HADOOP-257?page=all ]
Sameer Paranjpye updated HADOOP-257:
------------------------------------
Fix Version: 0.4
Version: 0.2
Assign To: Konstantin Shvachko
> starting one data node thread to manage multiple data directories
> -----------------------------------------------------------------
>
> Key: HADOOP-257
> URL: http://issues.apache.org/jira/browse/HADOOP-257
> Project: Hadoop
> Type: Improvement
> Components: dfs
> Versions: 0.2
> Reporter: Hairong Kuang
> Assignee: Konstantin Shvachko
> Fix For: 0.4
>
> If a data node is configured with multiple data directories, current
> implementation of dfs will start multiple data node threads, each of which
> manages one data directory and talks to its name node independently. From the
> name node's point of view, it sees multiple data nodes instead of one.
> I feel that a more scalable solution should be to start one data node thread
> that manages multiple data diretories. But the one data node thread needs to
> take care of the block allocation problem.
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