[ACCUMULO-3665] error writing mutations to log

• Type: Sub-task
• Status: Resolved
• Priority: Blocker
• Resolution: Not A Problem
• Component/s: tserver
• Assignee: Eric C. Newton
• Reporter: Eric C. Newton
• Created: 17/Mar/15 21:03
• Updated: 26/Apr/15 16:01
• Resolved: 25/Apr/15 23:07

Description

Testing the changes for the parent task, the following message appeared in the monitor:

Error writing mutations to log
	java.io.IOException: java.lang.NullPointerException
		at org.apache.accumulo.tserver.log.TabletServerLogger.close(TabletServerLogger.java:276)
		at org.apache.accumulo.tserver.log.TabletServerLogger.access$900(TabletServerLogger.java:68)
		at org.apache.accumulo.tserver.log.TabletServerLogger$3.withWriteLock(TabletServerLogger.java:370)
		at org.apache.accumulo.tserver.log.TabletServerLogger.testLockAndRun(TabletServerLogger.java:131)
		at org.apache.accumulo.tserver.log.TabletServerLogger.write(TabletServerLogger.java:361)
		at org.apache.accumulo.tserver.log.TabletServerLogger.write(TabletServerLogger.java:286)
		at org.apache.accumulo.tserver.log.TabletServerLogger.log(TabletServerLogger.java:415)
		at org.apache.accumulo.tserver.TabletServer$ThriftClientHandler.update(TabletServer.java:1014)
		at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:606)
		at org.apache.accumulo.core.trace.wrappers.RpcServerInvocationHandler.invoke(RpcServerInvocationHandler.java:46)
		at org.apache.accumulo.server.rpc.RpcWrapper$1.invoke(RpcWrapper.java:47)
		at com.sun.proxy.$Proxy19.update(Unknown Source)
		at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor$update.getResult(TabletClientService.java:2470)
		at org.apache.accumulo.core.tabletserver.thrift.TabletClientService$Processor$update.getResult(TabletClientService.java:2454)
		at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
		at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
		at org.apache.accumulo.server.rpc.TimedProcessor.process(TimedProcessor.java:63)
		at org.apache.thrift.server.AbstractNonblockingServer$FrameBuffer.invoke(AbstractNonblockingServer.java:516)
		at org.apache.accumulo.server.rpc.CustomNonBlockingServer$1.run(CustomNonBlockingServer.java:77)
		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
		at org.apache.accumulo.core.util.LoggingRunnable.run(LoggingRunnable.java:35)
		at java.lang.Thread.run(Thread.java:745)
	Caused by: java.lang.NullPointerException
		at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333)
		at java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:1175)
		at org.apache.accumulo.tserver.TabletServer.walogClosed(TabletServer.java:3031)
		at org.apache.accumulo.tserver.log.TabletServerLogger.close(TabletServerLogger.java:271)
		... 24 more