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[MAPREDUCE-4359] Potential deadlock in Counters - MapReduce - [issue]
...jcarder identified this deadlock in branch-1 (though it may also be present in trunk): Counters.size() is synchronized and locks Counters before Group Counters.Group.getCounterForName() is s...
http://issues.apache.org/jira/browse/MAPREDUCE-4359    Author: Todd Lipcon, 2012-07-05, 19:46
Re: PreCommit-Admin not running - MapReduce - [mail # dev]
...I reported it to builds@ earlier this week, seems to be running sporadically now.  We had some of our build slaves dead due to the leap second bug. I did the "date" trick to try to fix ...
   Author: Todd Lipcon, 2012-07-04, 23:00
[MAPREDUCE-2884] tmpjars not working when default filesystem mismatches between client and server - MapReduce - [issue]
...One of the HBase tests is failing which tries to add a local file to the distributed cache using the "tmpjars" configuration variable. The first half of the distributedcache setup decides no...
http://issues.apache.org/jira/browse/MAPREDUCE-2884    Author: Todd Lipcon, 2012-06-13, 17:54
[MAPREDUCE-2377] task-controller fails to parse configuration if it doesn't end in \n - MapReduce - [issue]
...If the task-controller.cfg file doesn't end in a newline, it fails to parse properly....
http://issues.apache.org/jira/browse/MAPREDUCE-2377    Author: Todd Lipcon, 2012-06-07, 19:45
[MAPREDUCE-2178] Race condition in LinuxTaskController permissions handling - MapReduce - [issue]
...The linux-task-controller executable currently traverses a directory heirarchy and calls chown/chmod on the files inside. There is a race condition here which can be exploited by an attacker...
http://issues.apache.org/jira/browse/MAPREDUCE-2178    Author: Todd Lipcon, 2012-06-05, 13:53
[MAPREDUCE-2224] Synchronization bugs in JvmManager - MapReduce - [issue]
...JvmManager.JvmManagerForType has several HashMap members that are inconsistently synchronized. I've seen sporadic NPEs in the 0.20 version of this code which has similar bugs....
http://issues.apache.org/jira/browse/MAPREDUCE-2224    Author: Todd Lipcon, 2012-06-05, 07:25
[MAPREDUCE-2461] Hudson jobs failing because mapred staging directory is full - MapReduce - [issue]
...All of the tests that submit MR jobs are failing on the h7 build machine. This is because the staging directory is entirely full:hudson@h7:/tmp/mr/mr$ ls -l /tmp/hadoop-hudson/mapred/staging...
http://issues.apache.org/jira/browse/MAPREDUCE-2461    Author: Todd Lipcon, 2012-06-01, 22:44
[MAPREDUCE-3947] yarn.app.mapreduce.am.resource.mb not documented - MapReduce - [issue]
...This configuration is useful but doesn't appear to be documented anywhere....
http://issues.apache.org/jira/browse/MAPREDUCE-3947    Author: Todd Lipcon, 2012-05-23, 20:28
[MAPREDUCE-4274] MapOutputBuffer should use native byte order for kvmeta - MapReduce - [issue]
...I don't have a benchmark to support this, but this should give a small CPU improvement on the map output buffer: currently, we create kvmeta as ByteBuffer.wrap(kvbuffer).asIntBuffer(). Accor...
http://issues.apache.org/jira/browse/MAPREDUCE-4274    Author: Todd Lipcon, 2012-05-23, 20:28
Re: Review Request. - MapReduce - [mail # dev]
...Hi Bhallamudi,  I committed MAPREDUCE-4002. MAPREDUCE-4071 has many test failures in the most recent QA run.  I looked at the other two but I think another committer who spends mor...
   Author: Todd Lipcon, 2012-05-20, 07:48
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