Hi, + hdfs-user (bcc'd)
which jre version u use? - Alex -- Alexander Lorenz http://mapredit.blogspot.com On Feb 1, 2012, at 8:16 AM, Xiaobin She wrote: > hi , > > > I'm using hive to do some log analysis, and I have encountered a problem. > > My cluster have 3 nodes, one for NameNode/JobTracker and the other two for > DataNode/TaskTracker > > One of the tasktracker will repeatedly receive KillJobAction and then delete > unknown jobs > > the logs look like: > > 2012-01-31 00:35:37,640 INFO org.apache.hadoop.mapred.TaskTracker: Received > 'KillJobAction' for job: job_201201301055_0381 > 2012-01-31 00:35:37,640 WARN org.apache.hadoop.mapred.TaskTracker: Unknown > job job_201201301055_0381 being deleted. > 2012-01-31 00:36:22,697 INFO org.apache.hadoop.mapred.TaskTracker: Received > 'KillJobAction' for job: job_201201301055_0383 > 2012-01-31 00:36:22,698 WARN org.apache.hadoop.mapred.TaskTracker: Unknown > job job_201201301055_0383 being deleted. > 2012-01-31 01:05:34,108 INFO org.apache.hadoop.mapred.TaskTracker: Received > 'KillJobAction' for job: job_201201301055_0384 > 2012-01-31 01:05:34,108 WARN org.apache.hadoop.mapred.TaskTracker: Unknown > job job_201201301055_0384 being deleted. > 2012-01-31 01:07:43,280 INFO org.apache.hadoop.mapred.TaskTracker: Received > 'KillJobAction' for job: job_201201301055_0385 > 2012-01-31 01:07:43,280 WARN org.apache.hadoop.mapred.TaskTracker: Unknown > job job_201201301055_0385 being deleted. > > this happens occasionally, and if this happens, this tasktracker will do > notghing but keep receiveing KillJobAction and delete unknown job, and thus > the performance will drop down. > > to solve this problem, I have to restart the cluster. > but obviously, this is not a good solution. > > these jobs eventually will be run on the other tasktracker, and they will run > well, the job will success. > > has anybody have encountered this problem and give me some advices? > > and occasionally there will be some errlog like: > > 2012-01-31 13:11:40,183 INFO org.apache.hadoop.ipc.Server: IPC Server > listener on 55837: readAndProcess threw exception java.io.IOException: > Connection reset by peer. Count of bytes read: 0 > java.io.IOException: Connection reset by peer > at sun.nio.ch.FileDispatcher.read0(Native Method) > at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21) > at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:202) > at sun.nio.ch.IOUtil.read(IOUtil.java:175) > at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:243) > at org.apache.hadoop.ipc.Server.channelRead(Server.java:1211) > at org.apache.hadoop.ipc.Server.access$2300(Server.java:77) > at > org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:799) > at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:419) > at org.apache.hadoop.ipc.Server$Listener.run(Server.java:328) > 2012-01-31 13:11:40,211 INFO org.apache.hadoop.mapred.JvmManager: JVM : > jvm_201201311041_0071_r_-1096994286 exited. Number of tasks it ran: 0 > 2012-01-31 13:11:40,214 INFO org.apache.hadoop.mapred.TaskTracker: Killing > unknown JVM jvm_201201311041_0071_r_-386575334 > 2012-01-31 13:11:40,221 INFO org.apache.hadoop.ipc.Server: IPC Server > listener on 55837: readAndProcess threw exception java.io.IOException: > Connection reset by peer. Count of bytes read: 0 > java.io.IOException: Connection reset by peer > at sun.nio.ch.FileDispatcher.read0(Native Method) > at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21) > at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:202) > at sun.nio.ch.IOUtil.read(IOUtil.java:175) > at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:243) > at org.apache.hadoop.ipc.Server.channelRead(Server.java:1211) > at org.apache.hadoop.ipc.Server.access$2300(Server.java:77) > at > org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:799) > at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:419) > at org.apache.hadoop.ipc.Server$Listener.run(Server.java:328) > > Is there some connections between these two errors? > > thank you very much! > > xiaobin
