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[MAPREDUCE-5672] Provide optional RollingFileAppender for container log4j (syslog) - MapReduce - [issue]
...This JIRA is an alternative take on YARN-1130We propose providing an option of using a RollingFileAppender(RFA)-based implementation of container log appender as means of log size control vi...
http://issues.apache.org/jira/browse/MAPREDUCE-5672    Author: Gera Shegalov, 2014-07-16, 23:05
[MAPREDUCE-5785] Derive task attempt JVM max heap size and io.sort.mb automatically from mapreduce.*.memory.mb - MapReduce - [issue]
...Currently users have to set 2 memory-related configs per Job / per task type.  One first chooses some container size map reduce.*.memory.mb and then a corresponding maximum Java hea...
http://issues.apache.org/jira/browse/MAPREDUCE-5785    Author: Gera Shegalov, 2014-07-14, 18:43
[MAPREDUCE-5932] Provide an option to use a dedicated reduce-side shuffle log - MapReduce - [issue]
...For reducers in large jobs our users cannot easily spot portions of the log associated with problems with their code. An example reducer with INFO-level logging generates ~3500 lines / ~700K...
http://issues.apache.org/jira/browse/MAPREDUCE-5932    Author: Gera Shegalov, 2014-07-03, 06:33
[MAPREDUCE-5813] YarnChild does not load job.xml with mapreduce.job.classloader=true - MapReduce - [issue]
...YarnChild.main uses JobConf.addResource(String) to load job.xml that relies on class loading. When mapreduce.job.classloader=true the job-speicific part of the class path is separated from C...
http://issues.apache.org/jira/browse/MAPREDUCE-5813    Author: Gera Shegalov, 2014-07-02, 11:21
[MAPREDUCE-5815] Fix NPE in TestMRAppMaster - MapReduce - [issue]
...Working MAPREDUCE-5813 I stumbled on NPE's in TestMRAppMaster. They seem to be introduced by MAPREDUCE-5805....
http://issues.apache.org/jira/browse/MAPREDUCE-5815    Author: Gera Shegalov, 2014-06-30, 09:18
[MAPREDUCE-5941] JobCounter's should be organized in groups  for map and reduce - MapReduce - [issue]
...JobCounters are currently organized counterintuitively.  We duplicate the same logical counter. For example, there is NUM_FAILED_MAPS and NUM_FAILED_REDUCES instead of NUM_FAILED_TASKS ...
http://issues.apache.org/jira/browse/MAPREDUCE-5941    Author: Gera Shegalov, 2014-06-26, 00:52
[MAPREDUCE-5892] Derive MR-AM container size and Xmx based on the job size: number of splits and reduces - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5892    Author: Gera Shegalov, 2014-05-15, 20:42
[MAPREDUCE-5774] Job overview in History UI should list reducer phases in chronological order - MapReduce - [issue]
...Current order:Average Map Time         9secAverage Reduce Time 0secAverage Shuffle Time 22secAverage Merge Time 0secProposed order:Average Map Time     &nb...
http://issues.apache.org/jira/browse/MAPREDUCE-5774    Author: Gera Shegalov, 2014-05-14, 23:48
[MAPREDUCE-5887] Move split creation from submission client to MRAppMaster - MapReduce - [issue]
...This JIRA is filed to improve scalability of job submission, specifically when there is a significant latency between the submission client and the cluster nodes RM and NN, e.g. in a multi-d...
http://issues.apache.org/jira/browse/MAPREDUCE-5887    Author: Gera Shegalov, 2014-05-14, 10:39
[MAPREDUCE-5847] Remove redundant code for fileOutputByteCounter in MapTask and ReduceTask - MapReduce - [issue]
...Both MapTask and ReduceTask carry redundant code to update BYTES_WRITTEN counter. However, Task.updateCounters uses file system stats for this....
http://issues.apache.org/jira/browse/MAPREDUCE-5847    Author: Gera Shegalov, 2014-04-19, 00:24
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