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[MAPREDUCE-5059] Job overview shows average merge time larger than for any reduce attempt
...When looking at a job overview page on the history server, the Average Merge Time is often reported with a value that is far larger than the Elapsed Merge Time shown for any reduce task atte...
, 2013-07-29, 06:44
[MAPREDUCE-5417] Propagate task settings to AM when job runs in uber mode
...When a job runs in Uber-AM mode the JVM settings (e.g.: heap sizing), container sizing, and environment variables are not propagated to the AM. This means running in uber-AM mode is no...
, 2013-07-29, 06:10
[MAPREDUCE-5211] Reducer intermediate files can collide during merge
...The OnDiskMerger.merge method constructs an output path that is not unique to a reduce attempt, and as a result can result in a file collision with other reducers from the same app that are ...
, 2013-06-16, 13:25
[MAPREDUCE-4069] Cleanup task tokens interface
...This tracks a couple of cleanup issues that were identified in MAPREDUCE-4043: It seems unnecessary to pass the job token and credentials separately when we always combine the job token into...
, 2013-06-13, 21:23
[MAPREDUCE-5307] Failure to launch a task attempt leads to missing failed attempt
...When the AM tries to connect to a node to launch a task attempt but the launcher encounters an error (e.g.: RPC timeout, no connectivity to node, etc.), the error will count as a failed task...
, 2013-06-06, 17:20
[MAPREDUCE-5268] Improve history server startup performance
...The history server can easily take many minutes to startup when there are a significant number of jobs to scan in the done directory. However the scanning of files is not the bottlenec...
, 2013-06-04, 15:06
[MAPREDUCE-5261] TestRMContainerAllocator is exiting and failing the build
...Recent builds are failing because TestRMContainerAllocator is exiting rather than succeeding or failing....
, 2013-05-31, 15:07
[MAPREDUCE-4235] Killing app can lead to inconsistent app status between RM and HS
...If a client tries to kill an application that is about to complete, the application states between the ResourceManager's web UI and the history server can be inconsistent. When the pro...
, 2013-05-24, 16:23
[MAPREDUCE-5257] TestContainerLauncherImpl fails
...TestContainerLauncherImpl is hanging and eventually being killed by the surefire timeout which fails a maven test build....
, 2013-05-20, 14:21
[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
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