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[MAPREDUCE-5465] Container killed before hprof dumps profile.out - MapReduce - [issue]
...If there is profiling enabled for mapper or reducer then hprof dumps profile.out at process exit. It is dumped after task signaled to AM that work is finished.AM kills container with finishe...
http://issues.apache.org/jira/browse/MAPREDUCE-5465    Author: Radim Kolar, 2014-04-09, 23:34
[MAPREDUCE-5209] ShuffleScheduler log message incorrect - MapReduce - [issue]
...In ShuffleScheduler.java line 361 log message is incorrect, there should be "ms" instead of "s".    LOG.info(host + " freed by " + Thread.currentThread().getName() + " in " + ...
http://issues.apache.org/jira/browse/MAPREDUCE-5209    Author: Radim Kolar, 2014-03-19, 18:35
Re: DataBlockScanner's rate limit - MapReduce - [mail # user]
...Another questions: will a single replication factor offen lead to block  missing? yes...
   Author: Radim Kolar, 2013-08-02, 06:02
[MAPREDUCE-5153] Support for running combiners without reducers - MapReduce - [issue]
...scenario: Workflow mapper -> sort -> combiner -> hdfsNo api change is need, if user set combiner class and reducers = 0 then run combiner and sent output to HDFS.Popular libraries s...
http://issues.apache.org/jira/browse/MAPREDUCE-5153    Author: Radim Kolar, 2013-07-26, 13:35
oom during shuffle in 2.0.4 - MapReduce - [mail # dev]
...Dne 6.5.2013 17:09, Jason Lowe napsal(a): my case is different. In memory merge of 281 MB. These are first 4  segments, and jvm limit is set to 600MB,  mapreduce.reduce.shuffle.inp...
   Author: Radim Kolar, 2013-05-06, 19:46
oom during shuffle - MapReduce - [mail # dev]
...i retested it and oom error is also in 2.0.3, but not in 1.x.  how much memory is needed for reducer during shuffle and sort? Peak  usage is memoryLimit or there have to be additio...
   Author: Radim Kolar, 2013-05-06, 02:35
2.0.4 beta vs 2.0.3 - MapReduce - [mail # dev]
...After upgrade i am getting out of heap space during shuffle. I am using  compressed mapper outputs and 200 mb sort buffers. Was something  important changed? like for example alloc...
   Author: Radim Kolar, 2013-05-04, 23:40
Re: JVM vs container memory configs - MapReduce - [mail # dev]
...While looking into MAPREDUCE-5207 (adding defaults for mapreduce.{map|reduce}.memory.mb), I was wondering how much headroom should be left on top of mapred.child.java.opts (or other similar ...
   Author: Radim Kolar, 2013-05-04, 21:52
MAPREDUCE-4594 - MapReduce - [mail # dev]
...I really need to get this committed because my patch to cascading  depends on it.  https://issues.apache.org/jira/browse/MAPREDUCE-4594...
   Author: Radim Kolar, 2013-04-26, 01:04
[MAPREDUCE-4594] Add init/shutdown methods to mapreduce Partitioner - MapReduce - [issue]
...The Partitioner supports only the Configurable API, which can be used for basic init in setConf(). Problem is that there is no shutdown function.I propose to use standard setup() cleanup() f...
http://issues.apache.org/jira/browse/MAPREDUCE-4594    Author: Radim Kolar, 2013-04-26, 00:55
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