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[MAPREDUCE-4927] Historyserver 500 error due to NPE when accessing specific counters page for failed job
...Went to the historyserver page for a job that failed and examined the counters page. When I clicked on a specific counter, the historyserver returned a 500 error. The historyserv...
, 2013-05-18, 14:36
[MAPREDUCE-5168] Reducer can OOM during shuffle because on-disk output stream not released
...If a reducer needs to shuffle a map output to disk, it opens an output stream and writes the data to disk. However it does not release the reference to the output stream within the Map...
, 2013-05-14, 18:04
[MAPREDUCE-5144] TestAMWebApp.testConfView has poor test coverage
...testConfView is supposed to test the rendering of a job's configuration page, but the rendering code exits early with, "Sorry, can't do anything without a JobID." Therefore it's not re...
, 2013-04-11, 16:32
[MAPREDUCE-5090] TotalOrderPartitioner does not recognize total.order.partitioner.* settings
...There is a backwards-compatibility issue where TotalOrderPartitioner no longer recognizes the Hadoop 1.x properties such as total.order.partitioner.natural.order, total.order.partitioner.max...
, 2013-03-21, 22:19
[MAPREDUCE-4993] AM thinks it was killed when an error occurs setting up a task container launch context
...If an IOException occurs while setting up a container launch context for a task then the AM exits with a KILLED status and no diagnostics. The job should be marked as FAILED (or maybe ...
, 2013-03-07, 15:30
[MAPREDUCE-5037] JobControl logging when a job completes
...JobControl emits logs, via the logging in Job.submit(), whenever a job is launched. It would be nice if it also logged when active jobs it is tracking complete and their final status (...
, 2013-02-28, 17:07
[MAPREDUCE-4831] Task commit can occur more than once due to AM retries
...If a task attempt begins committing but the AM crashes before the task attempt completes then we could end up having the task commit again when the AM is relaunched. The subsequent AM ...
, 2013-02-27, 23:38
[MAPREDUCE-5000] TaskImpl.getCounters() can return the counters for the wrong task attempt when task is speculating
...When a task is speculating and one attempt completes then sometimes the counters for the wrong attempt are aggregated into the total counters for the job. The scenario looks like this:...
, 2013-02-14, 14:05
[MAPREDUCE-4982] AM hung with one pending map task
...Saw a job that hung with one pending map task that never ran. The task was in the SCHEDULED state with a single attempt that was in the UNASSIGNED state. The AM looked like it wa...
, 2013-02-13, 02:00
[MAPREDUCE-4648] Diagnostics from AM are missing from job history
...When a job fails during setup or commit, any diagnostics from the MapReduce ApplicationMaster are not available in the job history. Currently the diagnostics for the job are collected ...
, 2013-02-12, 20:59
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