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[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]
...https://issues.apache.org/jira/browse/MAPREDUCE-207?focusedCommentId=13997964&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13997964...
http://issues.apache.org/jira/browse/MAPREDUCE-5892    Author: Gera Shegalov, 2014-05-15, 20:42
[MAPREDUCE-5814] fat jar with *-default.xml may fail when mapreduce.job.classloader=true. - MapReduce - [issue]
...We faced a failure when a job.jar compiled against 0.20+ hadoop artifacts had to run with mapreduce.job.classloader=true because it needed a more recent guava as a dependency. The job failed...
http://issues.apache.org/jira/browse/MAPREDUCE-5814    Author: Gera Shegalov, 2014-05-15, 19:20
[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
[MAPREDUCE-5839] Provide a boolean switch to enable LazyOutputFormat - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5839    Author: Gera Shegalov, 2014-04-17, 06:02
[MAPREDUCE-4834] LinuxTaskController DELETE_AS_USER should try to delete as many paths as possible - MapReduce - [issue]
...When task-controller.c:delete_path iterates inodes in a directory tree, it may encounter a deletion failure. However, other directories/files may well be deletable, and the tree walk should ...
http://issues.apache.org/jira/browse/MAPREDUCE-4834    Author: Gera Shegalov, 2014-04-15, 19:34
[MAPREDUCE-5825] Provide diagnostics for reducers killed during ramp down - MapReduce - [issue]
...Since we operate many queues pretty much at their capacity it some times happens that a failed mapper causes a reducer ramp down. However, the user can only see "Container killed by the Appl...
http://issues.apache.org/jira/browse/MAPREDUCE-5825    Author: Gera Shegalov, 2014-04-11, 16:00
[MAPREDUCE-5773] Provide dedicated MRAppMaster syslog length limit - MapReduce - [issue]
...Currently mapreduce.task.userlog.limit.kb controls both the length of task attempt logs and MA-AM attempt logs. Obviously, MR-AM log is not userlog.We are interested in keeping MR-AM log eit...
http://issues.apache.org/jira/browse/MAPREDUCE-5773    Author: Gera Shegalov, 2014-04-10, 14:11
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