Vinod Kumar Vavilapalli
Arun C Murthy
Robert Joseph Evans
Vinay Kumar Thota
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[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
[MAPREDUCE-4704] TaskHeartbeatHandler misreports a ping timeout as a task timeout
...When a task fails to ping within the hardcoded ping timeout of 5 minutes, TaskHeartbeatHandler logs a message reporting the wrong timeout value. It reports a timeout of mapreduce.task....
, 2013-02-12, 20:58
[MAPREDUCE-4999] AM attempt ended up in ERROR state and generated history after node decommissioned
...Saw a case where a job recorded history for an app attempt that ended up in the ERROR state after the node the AM was running on was decommissioned. When the node was decommissioned, t...
, 2013-02-11, 16:07
[MAPREDUCE-4771] KeyFieldBasedPartitioner not partitioning properly when configured
...Relative to Hadoop 0.20/1.x, KeyFieldBasedPartitioner is not distributing across partitions properly when configured. This is related to the double-configure issue as described in HADO...
, 2013-02-06, 17:05
[MAPREDUCE-4666] JVM metrics for history server
...It would be nice if the job history server provided the same JVM metrics via metrics2 that other Hadoop daemons are already providing....
, 2013-02-06, 17:05
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