[ http://issues.apache.org/jira/browse/HADOOP-332?page=all ]
Owen O'Malley reassigned HADOOP-332:
------------------------------------
Assignee: Konstantin Shvachko (was: Owen O'Malley)
> Implement remote replication of dfs namespace images and transaction logs
> -------------------------------------------------------------------------
>
> Key: HADOOP-332
> URL: http://issues.apache.org/jira/browse/HADOOP-332
> Project: Hadoop
> Issue Type: Improvement
> Components: dfs
> Affects Versions: 0.4.0
> Reporter: Owen O'Malley
> Assigned To: Konstantin Shvachko
> Fix For: 0.5.0
>
>
> The namespace information (image and transaction logs) needs to be replicated
> on hosts other than the namenode to prevent data loss if a namenode crashes.
> In the short term we will add a new protocol to the datanodes to receive and
> store the namespace information.
> In the long term, it would be nice to have read-only namenodes that could
> receive the information and serve it up for users that want to read data, but
> do not need to write to the namespace.
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