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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-430) http server should die if the Datanode fails.
Date Tue, 08 Aug 2006 05:48:14 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-430?page=comments#action_12426444 ] 
Devaraj Das commented on HADOOP-430:

Invoking the "stop" method on the StatusHttpServer object should stop the http server. It
is currently invoked only in DataNode.shutdown.

> 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
>             Fix For: 0.5.1
>         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
> which can happen e.g. if the datanode has illegal storage id (=does not belong to the
> 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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