[ http://issues.apache.org/jira/browse/HADOOP-430?page=all ]
Wendy Chien reassigned HADOOP-430:
----------------------------------
Assignee: Wendy Chien
> http server should die if the Datanode fails.
> ---------------------------------------------
>
> Key: HADOOP-430
> URL: http://issues.apache.org/jira/browse/HADOOP-430
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.5.0
> Reporter: Konstantin Shvachko
> Assigned To: Wendy Chien
> Attachments: RegistrationOrder.patch
>
>
> HADOOP-375 changed the order in which a data node registers and starts its
> http server.
> Current version first starts the http server, then registers. As a result if
> the registration fails,
> which can happen e.g. if the datanode has illegal storage id (=does not
> belong to the cluster),
> the http server keeps running, which makes the data node seem running too.
> I think 2 things need to be done.
> 1) Datanode registration should precede the http server startup.
> 2) The http server should shutdown when the datanode fails (in general).
> I am attaching a patch for the first item.
> Does anybody know how the latter can be done in the version of jetty we are
> on now?
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