giraph-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Eli Reisman (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GIRAPH-321) Divide by 0 exception
Date Fri, 07 Sep 2012 00:16:07 GMT

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

Eli Reisman updated GIRAPH-321:
-------------------------------

    Attachment: GIRAPH-321-1.patch

Should be all set here, if we have 0-size path list then any local paths gets appended to
the front of the pathList for iteration purposes rather than some other hashed location, avoiding
the modulo operation that was hitting the div by zero.

Sorry for the annoyance! Will check this out a bit more soon, please follow up if anyone sees
any more trouble.
                
> Divide by 0 exception
> ---------------------
>
>                 Key: GIRAPH-321
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-321
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Avery Ching
>         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)

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message