Spurious exceptions in HConnectionImplementation ------------------------------------------------
Key: HBASE-5336 URL: https://issues.apache.org/jira/browse/HBASE-5336 Project: HBase Issue Type: Bug Reporter: Lars Hofhansl I have seen this on the client a few time during heave write testing: java.util.concurrent.ExecutionException: java.io.IOException: java.io.IOException: java.lang.NullPointerException at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) at java.util.concurrent.FutureTask.get(FutureTask.java:83) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatchCallback(HConnectionManager.java:1524) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatch(HConnectionManager.java:1376) at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:891) at org.apache.hadoop.hbase.client.HTable.doPut(HTable.java:743) at org.apache.hadoop.hbase.client.HTable.put(HTable.java:730) at NewsFeedCreate.insert(NewsFeedCreate.java:91) at NewsFeedCreate$1.run(NewsFeedCreate.java:38) at java.lang.Thread.run(Thread.java:619) Caused by: java.io.IOException: java.io.IOException: java.lang.NullPointerException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:95) at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:79) at org.apache.hadoop.hbase.client.ServerCallable.translateException(ServerCallable.java:228) at org.apache.hadoop.hbase.client.ServerCallable.withoutRetries(ServerCallable.java:212) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3.call(HConnectionManager.java:1360) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3.call(HConnectionManager.java:1348) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) ... 1 more Caused by: org.apache.hadoop.ipc.RemoteException: java.io.IOException: java.lang.NullPointerException at org.apache.hadoop.io.SequenceFile$Writer.getLength(SequenceFile.java:1099) at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter.getLength(SequenceFileLogWriter.java:243) at org.apache.hadoop.hbase.regionserver.wal.HLog.syncer(HLog.java:1289) at org.apache.hadoop.hbase.regionserver.wal.HLog.sync(HLog.java:1386) at org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchPut(HRegion.java:2161) at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:1954) at org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:3363) at sun.reflect.GeneratedMethodAccessor23.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364) at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1326) at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:899) at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:150) at $Proxy1.multi(Unknown Source) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3$1.call(HConnectionManager.java:1353) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$3$1.call(HConnectionManager.java:1351) at org.apache.hadoop.hbase.client.ServerCallable.withoutRetries(ServerCallable.java:210) ... 7 more -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira