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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-599) Improvement of network-based runtime partitioner
Date Wed, 29 Aug 2012 08:22:07 GMT

    [ https://issues.apache.org/jira/browse/HAMA-599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13443901#comment-13443901
] 

Edward J. Yoon commented on HAMA-599:
-------------------------------------

{code}

attempt_201208290116_0002_000004_0: 12/08/29 01:18:16 ERROR bsp.BSPTask: Shutting down ping
service.
attempt_201208290116_0002_000004_0: 12/08/29 01:18:16 FATAL bsp.GroomServer: Error running
child
attempt_201208290116_0002_000004_0: java.util.ConcurrentModificationException
attempt_201208290116_0002_000004_0: 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
attempt_201208290116_0002_000004_0: 	at java.util.HashMap$ValueIterator.next(HashMap.java:822)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.graph.GraphJobRunner.loadVertices(GraphJobRunner.java:487)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.graph.GraphJobRunner.setup(GraphJobRunner.java:172)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.bsp.BSPTask.runBSP(BSPTask.java:165)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.bsp.BSPTask.run(BSPTask.java:143)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.bsp.GroomServer$BSPPeerChild.main(GroomServer.java:1271)
attempt_201208290116_0002_000004_0: java.util.ConcurrentModificationException
attempt_201208290116_0002_000004_0: 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
attempt_201208290116_0002_000004_0: 	at java.util.HashMap$ValueIterator.next(HashMap.java:822)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.graph.GraphJobRunner.loadVertices(GraphJobRunner.java:487)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.graph.GraphJobRunner.setup(GraphJobRunner.java:172)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.bsp.BSPTask.runBSP(BSPTask.java:165)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.bsp.BSPTask.run(BSPTask.java:143)
attempt_201208290116_0002_000004_0: 	at org.apache.hama.bsp.GroomServer$BSPPeerChild.main(GroomServer.java:1271)
attempt_201208290116_0002_000004_0: log4j:WARN No appenders could be found for logger (org.apache.avro.ipc.NettyTransceiver).
attempt_201208290116_0002_000004_0: log4j:WARN Please initialize the log4j system properly.
attempt_201208290116_0002_000004_0: log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig
for more info.
{code}
                
> Improvement of network-based runtime partitioner
> ------------------------------------------------
>
>                 Key: HAMA-599
>                 URL: https://issues.apache.org/jira/browse/HAMA-599
>             Project: Hama
>          Issue Type: Improvement
>          Components: bsp core, graph
>    Affects Versions: 0.5.0
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>             Fix For: 0.6.0
>
>         Attachments: multi-stepPartitioning.patch
>
>
> Current runtime partitioning in graph is really inefficient and melodramatic.
> This issue improves code or figures out another way. See also HAMA-531

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