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[MAPREDUCE-4813] AM timing out during job commit - MapReduce - [issue]
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...The AM calls the output committer's commitJob method synchronously during JobImpl state transitions, which means the JobImpl write lock is held the entire time the job is being committed. &n...
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http://issues.apache.org/jira/browse/MAPREDUCE-4813
Author: Jason Lowe,
2012-12-29, 14:05
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[MAPREDUCE-4890] Invalid TaskImpl state transitions when task fails while speculating - MapReduce - [issue]
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...There are a couple of issues when a task fails while speculating (i.e.: multiple attempts are active): The other active attempts are not killed. TaskImpl's FAILED state does not handle the T...
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http://issues.apache.org/jira/browse/MAPREDUCE-4890
Author: Jason Lowe,
2012-12-22, 13:21
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[MAPREDUCE-4889] AM should have a diagnostics message for invalid state transitions - MapReduce - [issue]
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...When the ApplicationMaster encounters an invalid state transition in one of its many state machines (JobImpl, TaskImpl, TaskAttemptImpl, etc.) the job will fail with the ERROR state but the ...
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http://issues.apache.org/jira/browse/MAPREDUCE-4889
Author: Jason Lowe,
2012-12-19, 02:25
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[MAPREDUCE-4816] JobImpl Invalid event: JOB_TASK_ATTEMPT_COMPLETED at FAILED - MapReduce - [issue]
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...Saw this in an AM log of a task that had failed:2012-11-21 23:26:44,533 ERROR [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl: Can't handle this event at ...
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http://issues.apache.org/jira/browse/MAPREDUCE-4816
Author: Jason Lowe,
2012-12-11, 07:53
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[MAPREDUCE-4848] TaskAttemptContext cast error during AM recovery - MapReduce - [issue]
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...Recently saw an AM that failed and tried to recover, but the subsequent attempt quickly exited with its own failure during recovery:2012-12-05 02:33:36,752 FATAL [AsyncDispatcher event handl...
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http://issues.apache.org/jira/browse/MAPREDUCE-4848
Author: Jason Lowe,
2012-12-11, 05:35
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[MAPREDUCE-4852] Reducer should not signal fetch failures for disk errors on the reducer's side - MapReduce - [issue]
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...Ran across a case where a reducer ran on a node where the disks were full, leading to an exception like this during the shuffle fetch:2012-12-05 09:07:28,749 INFO [fetcher#25] org.apache.had...
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http://issues.apache.org/jira/browse/MAPREDUCE-4852
Author: Jason Lowe,
2012-12-06, 17:58
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[MAPREDUCE-4835] AM job metrics can double-count a job if it errors after entering a completion state - MapReduce - [issue]
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...If JobImpl enters the SUCCEEDED, FAILED, or KILLED state but then encounters an invalid state transition, it could double-count the job since jobs that encounter an error are considered fail...
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http://issues.apache.org/jira/browse/MAPREDUCE-4835
Author: Jason Lowe,
2012-12-04, 00:47
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[MAPREDUCE-4825] JobImpl.finished doesn't expect ERROR as a final job state - MapReduce - [issue]
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...TestMRApp.testJobError is causing AsyncDispatcher to exit with System.exit due to an exception being thrown. From the console output from testJobError:2012-11-27 18:46:15,240 ERROR [As...
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http://issues.apache.org/jira/browse/MAPREDUCE-4825
Author: Jason Lowe,
2012-11-30, 15:16
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[MAPREDUCE-4817] Hardcoded task ping timeout kills tasks localizing large amounts of data - MapReduce - [issue]
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...When a task is launched and spends more than 5 minutes localizing files, the AM will kill the task due to ping timeout. The AM's TaskHeartbeatHandler currently tracks tasks via a progr...
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http://issues.apache.org/jira/browse/MAPREDUCE-4817
Author: Jason Lowe,
2012-11-29, 13:08
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[MAPREDUCE-4815] FileOutputCommitter.commitJob can be very slow for jobs with many output files - MapReduce - [issue]
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...If a job generates many files to commit then the commitJob method call at the end of the job can take minutes. This is a performance regression from 1.x, as 1.x had the tasks commit di...
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http://issues.apache.org/jira/browse/MAPREDUCE-4815
Author: Jason Lowe,
2012-11-28, 14:27
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