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[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, 2014-11-21, 18:02
[MAPREDUCE-6160] Potential NullPointerException in MRClientProtocol interface implementation. - MapReduce - [issue]
...In the implementation of MRClientProtocol, many methods can throw NullPointerExceptions. Instead of NullPointerExceptions, better to throw IOException with proper message.In the HistoryClien...
http://issues.apache.org/jira/browse/MAPREDUCE-6160    Author: Rohith, 2014-11-21, 16:21
[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, 2014-11-21, 16:18
[MAPREDUCE-6169] MergeQueue should release reference to the current item from key and value at the end of the iteration to save memory. - MapReduce - [issue]
...MergeQueue should release reference to the current item from key and value at the end of the iteration to save memory.these buffers referenced by key and value can be large, which may cause ...
http://issues.apache.org/jira/browse/MAPREDUCE-6169    Author: zhihai xu, 2014-11-21, 15:44
[MAPREDUCE-5989] Add DeletionService in AM - MapReduce - [issue]
...In AM, for graceful cleanup, I propose addition of a DeletionService which will do the following :1. Cleanup of failed tasks (temporary data need not occupy space till NM's Deletion Service ...
http://issues.apache.org/jira/browse/MAPREDUCE-5989    Author: Varun Saxena, 2014-11-21, 09:09
[MAPREDUCE-6170] TestUlimit failure on JDK8 - MapReduce - [issue]
...TestUlimit#testCommandLine fails on JDK8, because the map task JVM fails to launch. We're setting the virtual memory limit too low, and the JVM errors out with: Could not allocate metaspace...
http://issues.apache.org/jira/browse/MAPREDUCE-6170    Author: bc Wong, 2014-11-20, 23:14
[MAPREDUCE-6128] Automatic addition of bundled jars to distributed cache - MapReduce - [issue]
...On the client side, JDK adds Class-Path elements from the job jar manifeston the classpath. In theory there could be many bundled jars in many directories such that adding them manually via ...
http://issues.apache.org/jira/browse/MAPREDUCE-6128    Author: Gera Shegalov, 2014-11-20, 18:44
[MAPREDUCE-6161] mapred hsadmin command missing from trunk - MapReduce - [issue]
...The hsadmin subcommand of the mapred script is no longer present in trunk. It is present in branch-2....
http://issues.apache.org/jira/browse/MAPREDUCE-6161    Author: Jason Lowe, 2014-11-20, 17:55
[MAPREDUCE-5673] It would be great if we can know which host(IP) the client submitted job in jobhistory web UI - MapReduce - [issue]
...Current Hadoop jobhistory web UI cann't list which host(IP) the client submitted the job, and it would be great if we can know which host(IP) the client submitted job in jobhistory web UI....
http://issues.apache.org/jira/browse/MAPREDUCE-5673    Author: yangping wu, 2014-11-20, 06:37
[MAPREDUCE-5568] JHS returns invalid string for reducer completion percentage if AM restarts with 0 reducer. - MapReduce - [issue]
...JobCLient shows like:13/10/05 16:26:09 INFO mapreduce.Job:  map 100% reduce NaN%13/10/05 16:26:09 INFO mapreduce.Job: Job job_1381015536254_0001 completed successfully13/10/05 16:26:09 ...
http://issues.apache.org/jira/browse/MAPREDUCE-5568    Author: Jian He, 2014-11-20, 00:46
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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