Arpit Gupta created MAPREDUCE-5198:
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Summary: Race condition in cleanup during task tracker renint with
LinuxTaskController
Key: MAPREDUCE-5198
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5198
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: tasktracker
Affects Versions: 1.2.0
Reporter: Arpit Gupta
This was noticed when job tracker would be restarted while jobs were running
and would ask the task tracker to reinitialize.
Tasktracker would fail with an error like
{code}
013-04-27 20:19:09,627 INFO org.apache.hadoop.mapred.TaskTracker: Good mapred
local directories are:
/grid/0/hdp/mapred/local,/grid/1/hdp/mapred/local,/grid/2/hdp/mapred/local,/grid/3/hdp/mapred/local,/grid/4/hdp/mapred/local,/grid/5/hdp/mapred/local
2013-04-27 20:19:09,628 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3
on 42075 caught: java.nio.channels.ClosedChannelException
at
sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:133)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:324)
at org.apache.hadoop.ipc.Server.channelWrite(Server.java:1717)
at org.apache.hadoop.ipc.Server.access$2000(Server.java:98)
at
org.apache.hadoop.ipc.Server$Responder.processResponse(Server.java:744)
at org.apache.hadoop.ipc.Server$Responder.doRespond(Server.java:808)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1433)
2013-04-27 20:19:09,628 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3
on 42075: exiting
2013-04-27 20:19:10,414 ERROR org.apache.hadoop.mapred.TaskTracker: Got fatal
exception while reinitializing TaskTracker:
org.apache.hadoop.util.Shell$ExitCodeException:
at org.apache.hadoop.util.Shell.runCommand(Shell.java:255)
at org.apache.hadoop.util.Shell.run(Shell.java:182)
at
org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:375)
at
org.apache.hadoop.mapred.LinuxTaskController.deleteAsUser(LinuxTaskController.java:281)
at
org.apache.hadoop.mapred.TaskTracker.deleteUserDirectories(TaskTracker.java:779)
at org.apache.hadoop.mapred.TaskTracker.initialize(TaskTracker.java:816)
at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:2704)
at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:3934)
{code}
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