Is there no other suggestions on what to do here? I really don’t have any idea about what’s going on? I actually ran this against a single extract from our graph.
Here are some more logs. Again this is running giraph 1.0 against hadoop 2. Thanks, 2013-11-19 17:06:04,097 WARN org.apache.hadoop.mapred.Child: Error running child 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 From: Artie Pesh-Imam Artie Pesh-Imam Reply: Artie Pesh-Imam artie.pesh-i...@tapad.com Date: November 11, 2013 at 10:55:54 AM To: Sertuğ Kaya sertug.k...@agmlab.com, Mohammad Islam misla...@yahoo.com, user@giraph.apache.org user@giraph.apache.org Subject: Re: Null Pointer Exception when running a job I can certainly try this. Are there any other configurations which are worth exploring? -- Artie Pesh-Imam Software Engineer @ Tapad 201-253-9647 From: Sertuğ Kaya Sertuğ Kaya Reply: user@giraph.apache.org user@giraph.apache.org Date: November 9, 2013 at 3:58:39 PM To: user@giraph.apache.org user@giraph.apache.org, Mohammad Islam misla...@yahoo.com Subject: Re: Null Pointer Exception when running a job Hello Artie; I also had such problems when working on large datasets. It probably needs a better hadoop/mapreduce configuration. For example did you try increasing the memory of task tracker child processes in mapred-site.xml such as: <property> <name>mapred.child.java.opts</name> <value>-Xmx3000m</value> </property> Regards; Sertug On 08-11-2013 01:26, Artie Pesh-Imam wrote: Hey It does work against a smaller data set and Im running 1.0.0 for hadoop 2. -- Artie Pesh-Imam Software Engineer @ Tapad 201-253-9647 From: Mohammad Islam Mohammad Islam Reply: user@giraph.apache.org user@giraph.apache.org, Mohammad Islam misla...@yahoo.com Date: November 7, 2013 at 6:20:53 PM To: user@giraph.apache.org user@giraph.apache.org Subject: Re: Null Pointer Exception when running a job Hi Artie, Hopefully someone would give you a concrete answer. My rambling comments: Did you try with a smaller number of vertices? I want to know if the problem is due to increased load. What version of Giraph are you using? Regards, Mohammad On Thursday, November 7, 2013 2:10 PM, Artie Pesh-Imam <artie.pesh-i...@tapad.com> wrote: Please let me know if any additional context would be useful. With no detail in the error message, I have no idea what the root issue could be. -- Artie Pesh-Imam Software Engineer @ Tapad 201-253-9647 From: Artie Pesh-Imam Artie Pesh-Imam Reply: Artie Pesh-Imam artie.pesh-i...@tapad.com Date: November 7, 2013 at 4:25:30 PM To: user@giraph.apache.org user@giraph.apache.org Subject: Null Pointer Exception when running a job 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