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From Artie Pesh-Imam <artie.pesh-i...@tapad.com>
Subject Null Pointer Exception when running a job
Date Thu, 07 Nov 2013 21:25:27 GMT
Hi all,

Im running a simple connected components algorithm against a graph of almost 200 million vertices. 

I have pretty much no guess on what this issue could be:
java.lang.IllegalStateException: run: Caught an unrecoverable exception null
	at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:102)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:672)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:330)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
	at org.apache.hadoop.mapred.Child.main(Child.java:262)
Caused by: java.lang.NullPointerException
	at org.apache.giraph.comm.SendCache.removeWorkerData(SendCache.java:157)
	at org.apache.giraph.comm.SendCache.removeAllData(SendCache.java:171)
	at org.apache.giraph.comm.SendMessageCache.removeAllMessages(SendMessageCache.java:92)
	at org.apache.giraph.comm.netty.NettyWorkerClientRequestProcessor.flush(NettyWorkerClientRequestProcessor.java:410)
	at org.apache.giraph.worker.BspServiceWorker.sendWorkerPartitions(BspServiceWorker.java:1316)
	at org.apache.giraph.worker.BspServiceWorker.exchangeVertexPartitions(BspServiceWorker.java:1361)
	at org.apache.giraph.graph.GraphTaskManager.execute(GraphTaskManager.java:255)
	at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:92)


-- 
Artie Pesh-Imam
Software Engineer @ Tapad
201-253-9647
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