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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4744) Wrong resolution of hostname and port
Date Wed, 18 Feb 2009 16:37:03 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674686#action_12674686
] 

Devaraj Das commented on HADOOP-4744:
-------------------------------------

I have a workaround patch that just invokes System.exit at the TT when it discovers that the
port returned is -1. Since we see the problem on only a very few trackers on startup (like
1 in 500), I propose that we live with this workaround until jetty provides the actual fix.
This problem is tracked in http://jira.codehaus.org/browse/JETTY-748 as well. I will submit
the workaround soon.

> Wrong resolution of hostname and port 
> --------------------------------------
>
>                 Key: HADOOP-4744
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4744
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Devaraj Das
>            Priority: Blocker
>             Fix For: 0.20.0
>
>
> I noticed the following for one of the hosts in a cluster:
> 1. machines.jsp page resolves the http address as just "http://hostname" (which doesn't
work). It doesnt put the port number for the host. Even if I add the port number manually
in the URI, the  task tracker page does not come up. 
> 2. All the tasks(both maps and reduces) which ran on the machine ran successfully. But
tasklogs cannot be viewed, because port-number is not resolved. ( same problem as in (1)).
> 3. The reducers waiting for maps ran on that machine fail with connection failed errors
saying the hostname is 'null'.

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