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From "Avery Ching (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (GIRAPH-321) Divide by 0 exception
Date Fri, 07 Sep 2012 21:38:08 GMT

     [ https://issues.apache.org/jira/browse/GIRAPH-321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Avery Ching resolved GIRAPH-321.
--------------------------------

    Resolution: Fixed
      Assignee: Eli Reisman

Thanks Eli.  Committed.
                
> Divide by 0 exception
> ---------------------
>
>                 Key: GIRAPH-321
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-321
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Avery Ching
>            Assignee: Eli Reisman
>         Attachments: GIRAPH-321-1.patch
>
>
> hadoop jar giraph-0.2-SNAPSHOT-for-hadoop-0.20.203.0-jar-with-dependencies.jar
> org.apache.giraph.GiraphRunner \
>   org.apache.giraph.examples.SimplePageRankVertex -w 1 \
>   -if org.apache.giraph.examples.LongDoubleFloatDoubleTextInputFormat
> -ip graph.txt
>   -of org.apache.giraph.examples.VertexWithDoubleValueFloatEdgeTextOutputFormat
> -op output
> where graph.txt has the following content:
> 1 2:1.0 3:1.0 4:1.0
> 2 1:1.0 3:1.0
> 3 1:1.0
> 4 1:1.0 3:1.0
> One of the mappers gives throws a divbyzero exception.
> java.lang.ArithmeticException: / by zero
> 	at org.apache.giraph.graph.LocalityInfoSorter.prioritizeLocalInputSplits(LocalityInfoSorter.java:107)
> 	at org.apache.giraph.graph.LocalityInfoSorter.<init>(LocalityInfoSorter.java:71)
> 	at org.apache.giraph.graph.BspServiceWorker.reserveInputSplit(BspServiceWorker.java:228)
> 	at org.apache.giraph.graph.BspServiceWorker.loadVertices(BspServiceWorker.java:317)
> 	at org.apache.giraph.graph.BspServiceWorker.setup(BspServiceWorker.java:604)
> 	at org.apache.giraph.graph.GraphMapper.setup(GraphMapper.java:368)
> 	at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:569)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
> 	at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
> 	at org.apache.hadoop.mapred.Child.main(Child.java:249)

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