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[MAPREDUCE-6068] Illegal progress value warnings in map tasks - MapReduce - [issue]
...When running a terasort on latest trunk, I see the following in my task logs:2014-09-02 17:42:28,437 INFO [main] org.apache.hadoop.mapred.MapTask: Map output collector class = org.apache.had...
http://issues.apache.org/jira/browse/MAPREDUCE-6068    Author: Todd Lipcon, 2014-12-15, 03:54
[MAPREDUCE-5974] Allow specifying multiple MapOutputCollectors with fallback - MapReduce - [issue]
...Currently we only allow specifying a single MapOutputCollector implementation class in a job. It would be nice to allow a comma-separated list of classes: we should try each collector implem...
http://issues.apache.org/jira/browse/MAPREDUCE-5974    Author: Todd Lipcon, 2014-12-14, 04:22
[expand - 1 more] - Re: [VOTE] Merge branch MAPREDUCE-2841 to trunk - MapReduce - [mail # dev]
...With four committer +1s, this vote passes.I'll take care of merging this to trunk either later tonight or over theweekend.Thanks to all of the contributors who helped with this work!-Todd&nb...
   Author: Todd Lipcon, 2014-09-13, 01:31
[MAPREDUCE-6074] native-task: fix release audit, javadoc, javac warnings - MapReduce - [issue]
...RAT is showing some release audit warnings. They all look spurious - just need to do a little cleanup and add excludes...
http://issues.apache.org/jira/browse/MAPREDUCE-6074    Author: Todd Lipcon, 2014-09-06, 03:59
[MAPREDUCE-6069] native-task: Style fixups and dead code removal - MapReduce - [issue]
...A few more cleanup things we should address: fix style issues (eg lines too long, bad indentation, commented-out code blocks, etc) both in Java and C++ Found a few pieces of unused code by r...
http://issues.apache.org/jira/browse/MAPREDUCE-6069    Author: Todd Lipcon, 2014-09-05, 18:45
[MAPREDUCE-6067] native-task: fix some counter issues - MapReduce - [issue]
...After running a terasort, I see the spilled records counter at 5028651606, which is about half what I expected to see. Using the non-native collector I see the expected count of 10000000000....
http://issues.apache.org/jira/browse/MAPREDUCE-6067    Author: Todd Lipcon, 2014-09-05, 08:20
[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, 2014-09-04, 02:05
[MAPREDUCE-4229] Counter names' memory usage can be decreased by interning - MapReduce - [issue]
...In our experience, most of the memory in production JTs goes to storing counter names (String objects and character arrays). Since most counter names are reused again and again, it would be ...
http://issues.apache.org/jira/browse/MAPREDUCE-4229    Author: Todd Lipcon, 2014-09-04, 00:17
[MAPREDUCE-6066] Speculative attempts should not run on the same node as their original attempt - MapReduce - [issue]
...I'm seeing a behavior on trunk with fair scheduler enabled where a speculative reduce attempt is getting run on the same node as its original attempt. This doesn't make sense – the mai...
http://issues.apache.org/jira/browse/MAPREDUCE-6066    Author: Todd Lipcon, 2014-09-03, 22:41
[MAPREDUCE-6055] native-task: findbugs, interface annotations, and other misc cleanup - MapReduce - [issue]
...A few items which we need to address before merge: fix findbugs errors add interface and stability annotations to all public classes fix eclipse warnings where possible...
http://issues.apache.org/jira/browse/MAPREDUCE-6055    Author: Todd Lipcon, 2014-09-03, 20:23
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB