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[MAPREDUCE-1869] TaskTracker hangs due to Java's usage of fork() being MT-unsafe - MapReduce - [issue]
...A TaskTracker process on our grid appears to be locked up and not sending heartbeats to the namenode.  Attaching jstack and pstack output.  Even tho the hangs appear to be in Local...
http://issues.apache.org/jira/browse/MAPREDUCE-1869    Author: Allen Wittenauer, 2011-11-02, 17:40
[MAPREDUCE-1884] Remove/deprecate mapred.map.tasks tunable - MapReduce - [issue]
...Considering it isn't used for much that I know, is there any reason to keep the mapred.map.tasks tunable hanging around?  If not, let's remove it from the documentation, xml files, etc....
http://issues.apache.org/jira/browse/MAPREDUCE-1884    Author: Allen Wittenauer, 2011-11-02, 17:40
[MAPREDUCE-1998] Size-based queuing for capacity scheduler - MapReduce - [issue]
...On job submission, it would be useful if the capacity scheduler could pick a queue based on the # of maps and reduces.  This way one could have queues based on job-size without users ha...
http://issues.apache.org/jira/browse/MAPREDUCE-1998    Author: Allen Wittenauer, 2011-11-02, 17:39
[MAPREDUCE-2017] Move jobs between queues post-job submit - MapReduce - [issue]
...It would be massively useful to be able to move a job between queues after it has already been submitted....
http://issues.apache.org/jira/browse/MAPREDUCE-2017    Author: Allen Wittenauer, 2011-11-02, 17:39
[MAPREDUCE-2028] streaming should support MultiFileInputFormat - MapReduce - [issue]
...There should be a way to call MultiFileInputFormat from streaming without having to write Java code......
http://issues.apache.org/jira/browse/MAPREDUCE-2028    Author: Allen Wittenauer, 2011-11-02, 17:39
[MAPREDUCE-2441] regression: maximum limit of -1 + user-lmit math appears to be off - MapReduce - [issue]
...The math around the slot usage when maximum-capacity=-1 appears to be faulty.  See comments....
http://issues.apache.org/jira/browse/MAPREDUCE-2441    Author: Allen Wittenauer, 2011-11-02, 17:38
[MAPREDUCE-2507] vaidya script uses the wrong path for hadoop-core due to jar renaming - MapReduce - [issue]
...Another fallout of the incompatible jar renaming.  I sure hope Maven was worth it....
http://issues.apache.org/jira/browse/MAPREDUCE-2507    Author: Allen Wittenauer, 2011-11-02, 17:37
[expand - 2 more] - Re: Hadoop Tools Layout (was Re: DistCpV2 in 0.23) - MapReduce - [mail # dev]
...On Sep 6, 2011, at 4:32 PM, Eli Collins wrote:   At one point, everything in contrib was maintained.  So I guess  the big question is: what is the gating criteria for somethin...
   Author: Allen Wittenauer, 2011-09-06, 23:46
[MAPREDUCE-2846] a small % of all tasks fail with DefaultTaskController - MapReduce - [issue]
...After upgrading our test 0.20.203 grid to 0.20.204-rc2, we ran terasort to verify operation.  While the job completed successfully, approx 10% of the tasks failed with task runner execu...
http://issues.apache.org/jira/browse/MAPREDUCE-2846    Author: Allen Wittenauer, 2011-09-05, 14:23
[MAPREDUCE-2804] "Creation of symlink to attempt log dir failed." message is not useful - MapReduce - [issue]
...In attempting to qualify the 204 RC2 release, my tasktracker logs are filled with the above message.  I'd love to do something about it, but since it doesn't tell me what exactly it is ...
http://issues.apache.org/jira/browse/MAPREDUCE-2804    Author: Allen Wittenauer, 2011-09-02, 22:13
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