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From "Avery Ching (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-34) Failure of Vertex reflection for putVertexList from GIRAPH-27
Date Fri, 16 Sep 2011 20:24:08 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-34?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13106779#comment-13106779
] 

Avery Ching commented on GIRAPH-34:
-----------------------------------

Making the message immutable, is that more than javadoc?  It seems pretty difficult and possibly
expensive to guarantee that an object is immutable http://stackoverflow.com/questions/203475/how-do-i-identify-immutable-objects-in-java

> Failure of Vertex reflection for putVertexList from GIRAPH-27 
> --------------------------------------------------------------
>
>                 Key: GIRAPH-34
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-34
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Christian Kunz
>            Assignee: Avery Ching
>         Attachments: GIRAPH-34.patch
>
>
> Christian actually found this bug.  I am filing the JIRA on his behalf.  Here's my error
when running TestVertexRangeBalancer.  
> java.lang.RuntimeException: java.io.IOException: Call to returnwhose-lm/10.72.107.231:30002
failed on local exception: java.io.EOFException
> 	at org.apache.giraph.comm.BasicRPCCommunications.sendVertexListReq(BasicRPCCommunications.java:768)
> 	at org.apache.giraph.graph.BspServiceWorker.exchangeVertexRanges(BspServiceWorker.java:1282)
> 	at org.apache.giraph.graph.GraphMapper.map(GraphMapper.java:589)
> 	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:369)
> 	at org.apache.hadoop.mapred.Child$4.run(Child.java:259)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059)
> 	at org.apache.hadoop.mapred.Child.main(Child.java:253)
> Caused by: java.io.IOException: Call to returnwhose-lm/10.72.107.231:30002 failed on
local exception: java.io.EOFException
> 	at org.apache.hadoop.ipc.Client.wrapException(Client.java:1065)
> 	at org.apache.hadoop.ipc.Client.call(Client.java:1033)
> 	at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:224)
> 	at $Proxy3.putVertexList(Unknown Source)
> 	at org.apache.giraph.comm.BasicRPCCommunications.sendVertexListReq(BasicRPCCommunications.java:766)
> 	... 10 more
> Caused by: java.io.EOFException
> 	at java.io.DataInputStream.readInt(DataInputStream.java:375)
> 	at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:767)
> 	at org.apache.hadoop.ipc.Client$Connection.run(Client.java:712)
> I identified and fixed the issue by making BasicVertex implement Configurable and making
the graph state set in BasicRPCCommunications.  There is one more error though that I'll try
and solve before putting up a reviewboard.

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