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From "Greg Wilkins (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6528) Jetty returns -1 resulting in Hadoop masters / slaves to fail during startup.
Date Tue, 13 Apr 2010 13:36:53 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12856423#action_12856423
] 

Greg Wilkins commented on HADOOP-6528:
--------------------------------------

I'm still pondering this one... and still can't think of an explanation other than something
in hadoop is calling close.

I've attached a patch to http://jira.codehaus.org/browse/JETTY-748 that changes the way localPort
is handled:
Instead of calling socket.getLocalPort() when connector.getLocalPort() is called, this patch
calls socket.getLocalPort() in the open method and holds the result in a volatile int. If
close is called, the int is set to -2, so this will tell us if the port has not been opened,
or has been closed before it was used. 

This patch is not yet in a release, but if somebody has a setup where this problem occurs,
then  we can produce a snapshot build for you to test against.

 



> Jetty returns -1 resulting in Hadoop masters / slaves to fail during startup.
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-6528
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6528
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Hemanth Yamijala
>         Attachments: jetty-server-failure.log
>
>
> A recent test failure on Hudson seems to indicate that Jetty's Server.getConnectors()[0].getLocalPort()
is returning -1 in the HttpServer.getPort() method. When this happens, Hadoop masters / slaves
that use Jetty fail to startup correctly.

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