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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-930) Netty Initialization is sometimes very slow
Date Tue, 17 Jun 2014 09:16:02 GMT

    [ https://issues.apache.org/jira/browse/FLINK-930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14033588#comment-14033588
] 

ASF GitHub Bot commented on FLINK-930:
--------------------------------------

Github user uce commented on the pull request:

    https://github.com/apache/incubator-flink/pull/19#issuecomment-46284531
  
    I agree with both your points and have addressed them. The thrown exceptions are rethrown
as IOExceptions up to the TaskManager's shutdown method, where it is logged. I decided against
changing the signature of the TaskManager's shutdown method to rethrow the Exception as I
think this should go hand in hand with changes to the other component shutdowns as well.


> Netty Initialization is sometimes very slow
> -------------------------------------------
>
>                 Key: FLINK-930
>                 URL: https://issues.apache.org/jira/browse/FLINK-930
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Stephan Ewen
>            Assignee: Ufuk Celebi
>              Labels: performance
>
> I often see the initialization of Netty taking 3 seconds and then failing with the message

> "WARN  io.netty.util.internal.ThreadLocalRandom                      - Failed to generate
a seed from SecureRandom within 3 seconds. Not enough entrophy?"
> This adds to every single run a 3 seconds delay, which is often more than the test time
and causes our builds to run out of time.



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