[TAJO-738] NPE occur when failed in QueryMaster's GlobalPlanner.build().

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.8.0, 0.9.0
• Assignee: Hyoungjun Kim
• Reporter: Hyoungjun Kim
• Created: 07/Apr/14 01:19
• Updated: 08/Apr/14 08:30
• Resolved: 08/Apr/14 08:02

Description

If making plan in the QueryMaster, the bellow error message is shown in QueryMaster's log.

2014-04-07 10:11:33,090 INFO  [QueryMasterClientProtocol-1 Server Worker #2] worker.TajoWorkerClientService (TajoWorkerClientService.java:closeQuery(211)) - Stop Query:q_1396833048200_0002
java.lang.NullPointerException
        at org.apache.tajo.master.querymaster.QueryMaster.buildTajoHeartBeat(QueryMaster.java:364)
        at org.apache.tajo.master.querymaster.QueryMaster.access$800(QueryMaster.java:60)
        at org.apache.tajo.master.querymaster.QueryMaster$QueryHeartbeatThread.run(QueryMaster.java:408)

Also similar message shown in CLI.

2014-04-07 10:11:33,087 ERROR [TajoClient-1 Worker #0] rpc.RpcProtos (BlockingRpcClient.java:exceptionCaught(215)) - RPC Exception:Exception [org.apache.tajo.ipc.QueryMasterClientProtocol(192.168.0.159:28092)]: java.lang.NullPointerException
	at org.apache.tajo.worker.TajoWorkerClientService$TajoWorkerClientProtocolServiceHandler.getQueryStatus(TajoWorkerClientService.java:190)
	at org.apache.tajo.ipc.QueryMasterClientProtocol$QueryMasterClientProtocolService$2.callBlockingMethod(QueryMasterClientProtocol.java:115)
	at org.apache.tajo.rpc.BlockingRpcServer$ServerHandler.messageReceived(BlockingRpcServer.java:103)
	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
	at org.jboss.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:70)
	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
	at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:107)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:88)
	at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
	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)