Vinod Kumar Vavilapalli
Arun C Murthy
Robert Joseph Evans
Vinay Kumar Thota
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Bhallamudi Venkata Siva K...
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[MAPREDUCE-6279] AM should explicity exit JVM after all services have stopped
...Occasionally the MapReduce AM can "get stuck" trying to shut down. MAPREDUCE-6049 and MAPREDUCE-5888 were specific instances that have been fixed, but this can also occur with uber job...
, 2015-05-08, 17:08
[MAPREDUCE-4818] Easier identification of tasks that timeout during localization
...When a task is taking too long to localize and is killed by the AM due to task timeout, the job UI/history is not very helpful. The attempt simply lists a diagnostic stating it was kil...
, 2015-05-02, 06:10
[MAPREDUCE-6141] History server leveldb recovery store
...It would be nice to have a leveldb option to the job history server recovery store. Leveldb would provide some benefits over the existing filesystem store such as better support for at...
, 2015-04-25, 00:15
[MAPREDUCE-6263] Configurable timeout between YARNRunner terminate the application and forcefully kill.
...YARNRunner connects to the AM to send the kill job command then waits a hardcoded 10 seconds for the job to enter a terminal state. If the job fails to enter a terminal state in that t...
, 2015-04-10, 21:19
[MAPREDUCE-6162] mapred hsadmin fails on a secure cluster
...Attempts to use mapred hsadmin fail on a secure cluster for a couple of reasons. The HSAdmin client isn't configuring the principal config key for the protocol, resulting in a "Failed to spe...
, 2015-04-10, 21:19
[MAPREDUCE-6219] Reduce memory required for FileInputFormat located status optimization
...MAPREDUCE-1981 introduced an optimization to drastically reduce the number of namenode operations required to compute input splits when processing a directory. However it requires more...
, 2015-04-09, 22:58
[MAPREDUCE-5891] Improved shuffle error handling across NM restarts
...To minimize the number of map fetch failures reported by reducers across an NM restart it would be nice if reducers only reported a fetch failure after trying for at specified period of time...
, 2015-04-02, 14:49
[MAPREDUCE-4099] ApplicationMaster may fail to remove staging directory
...When the ApplicationMaster shuts down it's supposed to remove the staging directory, assuming properties weren't set to override this behavior. During shutdown the AM tells the ResourceManag...
, 2015-04-02, 01:42
[MAPREDUCE-5079] Recovery should restore task state from job history info directly
...We've encountered a lot of hanging issues during MR-AM recovery because the state machines don't always end up in the same states after recovery. This is especially true when speculati...
, 2015-03-18, 11:58
[MAPREDUCE-6261] NullPointerException if MapOutputBuffer.flush invoked twice
...MapOutputBuffer.flush will throw an NPE if it is invoked twice, since it blindly assumes kvbuffer is not null yet sets kvbuffer to null towards the end of the method....
, 2015-02-19, 15:21
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