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Posted to dev@giraph.apache.org by "Nitay Joffe (JIRA)" <ji...@apache.org> on 2012/11/06 03:50:12 UTC
[jira] [Updated] (GIRAPH-403) GraphMapper.notiftySentMessages need
to be thread-safe
[ https://issues.apache.org/jira/browse/GIRAPH-403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nitay Joffe updated GIRAPH-403:
-------------------------------
Attachment: GIRAPH-403.patch
Good catch Maja, my apologies. Here's proposed fix.
> GraphMapper.notiftySentMessages need to be thread-safe
> ------------------------------------------------------
>
> Key: GIRAPH-403
> URL: https://issues.apache.org/jira/browse/GIRAPH-403
> Project: Giraph
> Issue Type: Bug
> Reporter: Maja Kabiljo
> Assignee: Nitay Joffe
> Attachments: GIRAPH-403.patch
>
>
> GraphMapper.notifySentMessages() is not thread-safe. Here is the error I got:
> Caused by: java.lang.NullPointerException
> at org.apache.giraph.graph.GraphMapper.notifySentMessages(GraphMapper.java:454)
> at org.apache.giraph.graph.Vertex.sendMessage(Vertex.java:225)
> at org.apache.giraph.graph.Vertex.sendMessageToAllEdges(Vertex.java:266)
> at org.apache.giraph.benchmark.PageRankComputation.computePageRank(PageRankComputation.java:59)
> at org.apache.giraph.benchmark.EdgeListVertexPageRankBenchmark.compute(EdgeListVertexPageRankBenchmark.java:36)
> at org.apache.giraph.graph.ComputeCallable.computePartition(ComputeCallable.java:194)
> at org.apache.giraph.graph.ComputeCallable.call(ComputeCallable.java:139)
> at org.apache.giraph.graph.ComputeCallable.call(ComputeCallable.java:60)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
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