[
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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