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[MAPREDUCE-4576] Large dist cache can block tasktracker heartbeat - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-4576    Author: Robert Joseph Evans, 2013-05-15, 06:16
[MAPREDUCE-4549] Distributed cache conflicts breaks backwards compatability - MapReduce - [issue]
...I recently put in MAPREDUCE-4503 which went a bit too far, and broke backwards compatibility with 1.0 in distribtued cache entries.  instead of changing the behavior of the distributed ...
http://issues.apache.org/jira/browse/MAPREDUCE-4549    Author: Robert Joseph Evans, 2013-04-26, 03:14
[MAPREDUCE-4720] Browser thinks History Server main page JS is taking too long - MapReduce - [issue]
...The main History Server page with the default settings of 20,000 jobs can cause browsers to think that the JS on the page is stuck and ask you if you want to kill it. This is a big usability...
http://issues.apache.org/jira/browse/MAPREDUCE-4720    Author: Robert Joseph Evans, 2013-04-10, 13:42
[MAPREDUCE-5104] Deprecate and Remove PathCleanupQueue - MapReduce - [issue]
...CleanupQueue and InlineCleanupQueue appear to be dead code.  However, they are not marked as private and InlineCleanupQueue is part of UtilsForTests, so they could be used by other proj...
http://issues.apache.org/jira/browse/MAPREDUCE-5104    Author: Robert Joseph Evans, 2013-03-26, 14:44
[MAPREDUCE-5082] CodecPool should avoid OOMs with buggy codecs - MapReduce - [issue]
...I recently found a bug in the gpl compression libraries that was causing map tasks for a particular job to OOM.https://github.com/omalley/hadoop-gpl-compression/issues/3Now granted it does n...
http://issues.apache.org/jira/browse/MAPREDUCE-5082    Author: Robert Joseph Evans, 2013-03-19, 18:34
[MAPREDUCE-5060] Fetch failures that time out only count against the first map task - MapReduce - [issue]
...When a fetch failure happens, if the socket has already "connected" it is only counted against the first map task.  But most of the time it is because of an issue with the Node itself, ...
http://issues.apache.org/jira/browse/MAPREDUCE-5060    Author: Robert Joseph Evans, 2013-03-13, 14:06
[MAPREDUCE-4888] NLineInputFormat drops data in 1.1 and beyond - MapReduce - [issue]
...When trying to root cause why MAPREDUCE-4782 did not cause us issues on 1.0.2, I found out that HADOOP-7823 introduced essentially the exact same error into org.apache.hadoop.mapred.lib.NLin...
http://issues.apache.org/jira/browse/MAPREDUCE-4888    Author: Robert Joseph Evans, 2013-03-06, 09:55
[MAPREDUCE-4833] Task can get stuck in FAIL_CONTAINER_CLEANUP - MapReduce - [issue]
...If an NM goes down and the AM still tries to launch a container on it the ContainerLauncherImpl can get stuck in an RPC timeout.  At the same time the RM may notice that the NM has gone...
http://issues.apache.org/jira/browse/MAPREDUCE-4833    Author: Robert Joseph Evans, 2013-02-15, 13:10
[MAPREDUCE-4822] Unnecessary conversions in History Events - MapReduce - [issue]
...There are a number of conversions in the Job History Event classes that are totally unnecessary.  It appears that they were originally used to convert from the internal avro format, but...
http://issues.apache.org/jira/browse/MAPREDUCE-4822    Author: Robert Joseph Evans, 2013-02-15, 13:10
[MAPREDUCE-4752] Reduce MR AM memory usage through String Interning - MapReduce - [issue]
...There are a lot of strings that are duplicates of one another in the AM.  This comes from all of the PB events the come across the wire and also tasks heart-beating in through the umbil...
http://issues.apache.org/jira/browse/MAPREDUCE-4752    Author: Robert Joseph Evans, 2013-02-06, 17:05
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