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[MAPREDUCE-1015] Map-Reduce interface classification - MapReduce - [issue]
...HADOOP-5073 introduced the ability to classify apis wrt scope and stability. We should do a sweep over the Map-Reduce apis and classify them accordingly....
http://issues.apache.org/jira/browse/MAPREDUCE-1015    Author: Arun C Murthy, 2014-07-24, 01:11
[MAPREDUCE-989] Allow segregation of DistributedCache for maps and reduces - MapReduce - [issue]
...Applications might have differing needs for files in the DistributedCache wrt maps and reduces. We should allow them to specify them separately....
http://issues.apache.org/jira/browse/MAPREDUCE-989    Author: Arun C Murthy, 2014-07-24, 00:49
[MAPREDUCE-982] Deprecated DistributedCache still used in the new apis in org.apache.hadoop.mapreduce package - MapReduce - [issue]
...Deprecated DistributedCache still used in the new apis in org.apache.hadoop.mapreduce package e.g. JobContext, we should fix it....
http://issues.apache.org/jira/browse/MAPREDUCE-982    Author: Arun C Murthy, 2014-07-24, 00:37
[MAPREDUCE-970] task-controller/configuration.c:get_values is broken - MapReduce - [issue]
...task-controller/configuration.c:get_values is supposed to return a char** with the last element set to NULL.It doesn't correctly handle empty config-values, #values as an exactly multiple of...
http://issues.apache.org/jira/browse/MAPREDUCE-970    Author: Arun C Murthy, 2014-07-24, 00:31
[MAPREDUCE-922] Automatic configuration of number of map and reduce slots based on available resources for dealing with heterogenous clusters - MapReduce - [issue]
...Currently the number of map and reduce slots have to be configured manually, which is reasonable for homogeneous clusters. However, as the clusters start to change over time it becomes rathe...
http://issues.apache.org/jira/browse/MAPREDUCE-922    Author: Arun C Murthy, 2014-07-23, 23:12
[MAPREDUCE-921] Map-Reduce framework should gracefully handle heterogenous clusters - MapReduce - [issue]
...Currently several parts of the framework: components, configuration etc. implicitly assume uniformity of the cluster. This jira is meant to be a meta-issue to track various improvements nece...
http://issues.apache.org/jira/browse/MAPREDUCE-921    Author: Arun C Murthy, 2014-07-23, 23:09
[MAPREDUCE-791] Document Hadoop Map-Reduce Architecture - MapReduce - [issue]
...It would be nice to document the Map-Reduce architecture similar to the HDFS design document: http://hadoop.apache.org/common/docs/current/hdfs_design.html....
http://issues.apache.org/jira/browse/MAPREDUCE-791    Author: Arun C Murthy, 2014-07-23, 21:05
[MAPREDUCE-727] Move the bin/hadoop jar command over to bin/mapred - MapReduce - [issue]
...Currently 'bin/hadoop jar' is used to submit jobs, we should move it over to bin/mapred....
http://issues.apache.org/jira/browse/MAPREDUCE-727    Author: Arun C Murthy, 2014-07-23, 20:05
[MAPREDUCE-725] CapacityScheduler.TaskSchedulingMgr.hasSpeculativeTask bypasses HADOOP-2141 - MapReduce - [issue]
...CapacityScheduler.TaskSchedulingMgr.hasSpeculativeTask has a duplicate of the old speculation code (pre HADOOP-2141) which needs to be fixed in-order for speculation to work correctly....
http://issues.apache.org/jira/browse/MAPREDUCE-725    Author: Arun C Murthy, 2014-07-23, 19:57
[MAPREDUCE-481] Improvements to Global Black-listing of TaskTrackers - MapReduce - [issue]
...HADOOP-4305 added a global black-list of tasktrackers.We saw a scenario on one of our clusters where a few jobs caused a lot of tasktrackers to immediately be blacklisted. This was caused by...
http://issues.apache.org/jira/browse/MAPREDUCE-481    Author: Arun C Murthy, 2014-07-22, 22:10
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