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[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
[MAPREDUCE-6225] Fix new findbug warnings in hadoop-mapreduce-client-core
...Recent precommit builds in hadoop-mapreduce-client-core are flagging findbug warnings that appear to be new with the recent findbugs upgrade. These need to be cleaned up....
, 2015-02-17, 15:31
[MAPREDUCE-5727] History server web page can filter without showing filter keyword
...I loaded up a job conf page on the history server and used one of the search boxes to narrow the results. I then navigated to other pages (e.g.: map tasks, logs, etc.) then navigated b...
, 2015-02-11, 17:10
[MAPREDUCE-5267] History server should be more robust when cleaning old jobs
...Ran across a situation where an admin user had accidentally created a directory in one of the date directories under /mapred/history/done/ that was not readable by the historyserver user. &n...
, 2015-02-11, 16:12
[MAPREDUCE-6172] TestDbClasses timeouts are too aggressive
...Some of the TestDbClasses test timeouts are only 1 second, and some of those tests perform disk I/O which could easily exceed the test timeout if the disk is busy or there's some other hiccu...
, 2014-12-02, 15:27
[MAPREDUCE-5885] build/test/test.mapred.spill causes release audit warnings
...Multiple unit tests are creating files under hadoop-mapreduce-client-jobclient/build/test/test.mapred.spill which are causing release audit warnings during Jenkins patch precommit builds. &n...
, 2014-12-01, 03:11
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