Details
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Bug
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Status: Resolved
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Minor
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Resolution: Fixed
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None
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None
Description
I can see the following NPE exception when I submit the first query after cluster startup. Although the NPE does not abort a running query, it should be fixed.
2014-09-02 09:41:12,925 INFO org.apache.tajo.worker.TajoResourceAllocator: Start TajoWorkerAllocationThread 2014-09-02 09:41:12,970 INFO org.apache.tajo.worker.TajoResourceAllocator: Stop TajoWorkerAllocationThread 2014-09-02 09:41:12,970 INFO org.apache.tajo.master.querymaster.SubQuery: SubQuery (eb_1409618466499_0001_000001) has 3 containers! 2014-09-02 09:41:13,010 ERROR org.apache.tajo.master.ContainerProxy: java.lang.NullPointerException at org.apache.tajo.rpc.RpcConnectionPool.getConnection(RpcConnectionPool.java:87) at org.apache.tajo.master.TajoContainerProxy.assignExecutionBlock(TajoContainerProxy.java:99) at org.apache.tajo.master.TajoContainerProxy.launch(TajoContainerProxy.java:70) at org.apache.tajo.worker.TajoResourceAllocator$LaunchRunner.run(TajoResourceAllocator.java:170) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) 2014-09-02 09:41:13,010 ERROR org.apache.tajo.master.ContainerProxy: java.lang.NullPointerException at org.apache.tajo.rpc.RpcConnectionPool.getConnection(RpcConnectionPool.java:87) at org.apache.tajo.master.TajoContainerProxy.assignExecutionBlock(TajoContainerProxy.java:99) at org.apache.tajo.master.TajoContainerProxy.launch(TajoContainerProxy.java:70) at org.apache.tajo.worker.TajoResourceAllocator$LaunchRunner.run(TajoResourceAllocator.java:170) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) 2014-09-02 09:41:13,031 INFO org.apache.tajo.worker.TaskRunner: Tajo Root Dir: hdfs://localhost:8020/tajo 2014-09-02 09:41:13,031 INFO org.apache.tajo.worker.TaskRunner: Worker Local Dir: /tmp/tajo-hyunsik/tmpdir 2014-09-02 09:41:13,047 INFO org.apache.tajo.worker.TaskRunner: QueryMaster Address:/172.20.10.7:28093 2014-09-02 09:41:13,048 INFO org.apache.tajo.worker.TaskRunnerManager: Start TaskRunner:eb_1409618466499_0001_000001,container_1409618466499_0001_01_000003