TaskTracker sends duplicate status when updating task metrics throws exception
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Key: HADOOP-934
URL: https://issues.apache.org/jira/browse/HADOOP-934
Project: Hadoop
Issue Type: Bug
Components: mapred
Affects Versions: 0.10.1
Reporter: Nigel Daley
When updating the TaskTracker metrics repeatedly throws an exception, the
TaskTracker repeatedly sends status events to the JobTracker. This seems to
get the JobTracker into a funny state.
See annotated logs below
TaskTracker log:
2007-01-21 23:51:03,555 INFO org.apache.hadoop.mapred.TaskTracker:
LaunchTaskAction: task_0001_m_000000_0
2007-01-21 23:51:05,669 INFO org.apache.hadoop.mapred.TaskTracker:
task_0001_m_000000_0 0.0% writing [EMAIL PROTECTED]/1858392
2007-01-21 23:51:06,722 INFO org.apache.hadoop.mapred.TaskTracker:
task_0001_m_000000_0 0.0% wrote 7041109562936259497
2007-01-21 23:51:07,784 INFO org.apache.hadoop.mapred.TaskTracker:
task_0001_m_000000_0 0.0% wrote -3327068643288265619
2007-01-21 23:51:08,819 INFO org.apache.hadoop.mapred.TaskTracker:
task_0001_m_000000_0 0.0% wrote -53923196326936926
2007-01-21 23:51:09,322 INFO org.apache.hadoop.mapred.TaskTracker:
task_0001_m_000000_0 1.0% wrote -3407225283463353195
2007-01-21 23:51:09,323 INFO org.apache.hadoop.mapred.TaskTracker: Task
task_0001_m_000000_0 is done.
2007-01-21 23:51:09,391 ERROR org.apache.hadoop.mapred.TaskTracker: Caught
exception: org.apache.hadoop.metrics.MetricsException:
at foo.Bar.setMetric(Unknown Source)
at
org.apache.hadoop.mapred.TaskTracker$TaskTrackerMetrics.completeTask(TaskTracker.java:135)
at
org.apache.hadoop.mapred.TaskTracker.transmitHeartBeat(TaskTracker.java:604)
at
org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:495)
at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:852)
at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:1494)
2007-01-21 23:51:14,057 INFO org.apache.hadoop.mapred.TaskTracker: Resending
'status' to 'jobtrackerhost' with reponseId '21
2007-01-21 23:51:14,060 ERROR org.apache.hadoop.mapred.TaskTracker: Caught
exception: org.apache.hadoop.metrics.MetricsException:
at foo.Bar.setMetric(Unknown Source)
at
org.apache.hadoop.mapred.TaskTracker$TaskTrackerMetrics.completeTask(TaskTracker.java:135)
at
org.apache.hadoop.mapred.TaskTracker.transmitHeartBeat(TaskTracker.java:604)
at
org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:495)
at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:852)
at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:1494)
2007-01-21 23:51:14,060 INFO org.apache.hadoop.mapred.TaskTracker: Resending
'status' to 'jobtrackerhost' with reponseId '22
2007-01-21 23:51:14,063 ERROR org.apache.hadoop.mapred.TaskTracker: Caught
exception: org.apache.hadoop.metrics.MetricsException:
at foo.Bar.setMetric(Unknown Source)
at
org.apache.hadoop.mapred.TaskTracker$TaskTrackerMetrics.completeTask(TaskTracker.java:135)
at
org.apache.hadoop.mapred.TaskTracker.transmitHeartBeat(TaskTracker.java:604)
at
org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:495)
at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:852)
at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:1494)
...
[these messages continue forever with each status sent to jobtrackerhost having
an increasing responseId]
JobTracker log:
2007-01-21 23:51:03,500 INFO org.apache.hadoop.mapred.JobInProgress: Choosing
normal task tip_0001_m_000000
2007-01-21 23:51:03,511 INFO org.apache.hadoop.mapred.JobTracker: Adding task
'task_0001_m_000000_0' to tip tip_0001_m_000000, for tracker 'tracker:50050'
2007-01-21 23:51:03,569 INFO org.apache.hadoop.mapred.JobInProgress: Choosing
normal task tip_0001_r_000000
2007-01-21 23:51:03,577 INFO org.apache.hadoop.mapred.JobTracker: Adding task
'task_0001_r_000000_0' to tip tip_0001_r_000000, for tracker 'tracker2:50050'
2007-01-21 23:51:09,386 INFO org.apache.hadoop.mapred.JobInProgress: Task
'task_0001_m_000000_0' has completed tip_0001_m_000000 successfully.
2007-01-21 23:51:09,389 INFO org.apache.hadoop.mapred.TaskInProgress: Task
'task_0001_m_000000_0' has completed.
2007-01-21 23:51:14,059 WARN org.apache.hadoop.mapred.TaskInProgress: Recieved
duplicate status update of 'SUCCEEDED' for 'task_0001_m_000000_0' of TIP
'tip_0001_m_000000'
2007-01-21 23:51:14,062 WARN org.apache.hadoop.mapred.TaskInProgress: Recieved
duplicate status update of 'SUCCEEDED' for 'task_0001_m_000000_0' of TIP
'tip_0001_m_000000'
2007-01-21 23:51:14,064 WARN org.apache.hadoop.mapred.TaskInProgress: Recieved
duplicate status update of 'SUCCEEDED' for 'task_0001_m_000000_0' of TIP
'tip_0001_m_000000'
2007-01-21 23:51:14,066 WARN org.apache.hadoop.mapred.TaskInProgress: Recieved
duplicate status update of 'SUCCEEDED' for 'task_0001_m_000000_0' of TIP
'tip_0001_m_000000'
... [there are hundreds of these identical messages]
2007-01-21 23:51:16,441 WARN org.apache.hadoop.mapred.TaskInProgress: Recieved
duplicate status update of 'SUCCEEDED' for 'task_0001_m_000000_0' of TIP
'tip_0001_m_000000'
2007-01-21 23:51:16,442 WARN org.apache.hadoop.mapred.TaskInProgress: Recieved
duplicate status update of 'SUCCEEDED' for 'task_0001_m_000000_0' of TIP
'tip_0001_m_000000'
2007-01-21 23:51:16,444 INFO org.apache.hadoop.mapred.JobInProgress: Task
'task_0001_r_000000_0' has completed tip_0001_r_000000 successfully.
2007-01-21 23:51:16,446 INFO org.apache.hadoop.mapred.TaskInProgress: Task
'task_0001_r_000000_0' has completed.
2007-01-21 23:51:16,456 INFO org.apache.hadoop.mapred.JobInProgress: Job
job_0001 has completed successfully.
2007-01-21 23:51:16,459 INFO org.apache.hadoop.mapred.JobTracker: Removed
completed task 'task_0001_r_000000_0' from 'tracker2:50050'
2007-01-21 23:51:16,460 WARN org.apache.hadoop.mapred.TaskInProgress: Recieved
duplicate status update of 'SUCCEEDED' for 'task_0001_m_000000_0' of TIP
'tip_0001_m_000000'
2007-01-21 23:51:16,460 INFO org.apache.hadoop.mapred.JobTracker: Removed
completed task 'task_0001_m_000000_0' from 'tracker:50050'
2007-01-21 23:51:16,462 INFO org.apache.hadoop.mapred.JobTracker: Serious
problem. While updating status, cannot find taskid task_0001_m_000000_0
2007-01-21 23:51:16,463 INFO org.apache.hadoop.mapred.JobTracker: Serious
problem. While updating status, cannot find taskid task_0001_m_000000_0
2007-01-21 23:51:16,465 INFO org.apache.hadoop.mapred.JobTracker: Serious
problem. While updating status, cannot find taskid task_0001_m_000000_0
...
[these messages continue forever]
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