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[MAPREDUCE-5875] Make Counter limits consistent across JobClient, MRAppMaster, and YarnChild - MapReduce - [issue]
...Currently, counter limits "mapreduce.job.counters.*" handled by org.apache.hadoop.mapreduce.counters.Limits are initialized asymmetrically: on the client side, and on the AM, job.xml is igno...
http://issues.apache.org/jira/browse/MAPREDUCE-5875    Author: Gera Shegalov, 2015-03-25, 05:11
[MAPREDUCE-6280] Reject directory vs file path conflict resolution in FileOutputCommitter - MapReduce - [issue]
...If one task commits a directory foo, and then another task commits file foo, the directory foo with potentially many files will be wiped out. While this is a very unlikely scenario, due to t...
http://issues.apache.org/jira/browse/MAPREDUCE-6280    Author: Gera Shegalov, 2015-03-18, 22:08
[MAPREDUCE-4844] Counters.java doesn't obey Java Memory Model - MapReduce - [issue]
...Counters have a number of immutable fields that have not been declared 'final'.For example, the field groups is not final. It is, however, accessed in a couple of methods that are declared '...
http://issues.apache.org/jira/browse/MAPREDUCE-4844    Author: Gera Shegalov, 2015-03-08, 18:06
[MAPREDUCE-5785] Derive heap size or mapreduce.*.memory.mb automatically - 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, 2015-03-07, 19:44
[MAPREDUCE-6223] TestJobConf#testNegativeValueForTaskVmem failures - MapReduce - [issue]
...Tests run: 8, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 3.328 sec <<< FAILURE! - in org.apache.hadoop.conf.TestJobConftestNegativeValueForTaskVmem(org.apache.hadoop.conf.Tes...
http://issues.apache.org/jira/browse/MAPREDUCE-6223    Author: Gera Shegalov, 2015-03-02, 06:31
[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, 2015-02-05, 22:49
[MAPREDUCE-5839] Provide a boolean switch to enable LazyOutputFormat - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5839    Author: Gera Shegalov, 2015-02-05, 18:46
[MAPREDUCE-5696] Add Localization counters to MR - MapReduce - [issue]
...Users are often unaware of localization cost that their jobs incur. To measure effectiveness of localization caches it is necessary to expose the overhead in the form of user-visible metrics...
http://issues.apache.org/jira/browse/MAPREDUCE-5696    Author: Gera Shegalov, 2015-02-05, 18:31
[MAPREDUCE-5648] Allow user-specified diagnostics for killed tasks and jobs - MapReduce - [issue]
...Our users and tools want to be able to supply additional custom diagnostic messages to mapreduce ClientProtocol killTask....
http://issues.apache.org/jira/browse/MAPREDUCE-5648    Author: Gera Shegalov, 2015-02-05, 18:31
[MAPREDUCE-6209] Implement a heuristic to auto-size Java heap of MRAppMaster container proportional to the job size - MapReduce - [issue]
...The size of Java heap required by the AM is linearly proportional to the size of the MR job (number of mappers/splits and reducers). it would be nice if users did not have to adjust the AM c...
http://issues.apache.org/jira/browse/MAPREDUCE-6209    Author: Gera Shegalov, 2015-01-21, 11:14
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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