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[MAPREDUCE-6200] Streaming job -reducer option for Map only job - MapReduce - [issue]
...-reducer is listed as a Required option, but is a -reducer still required if the Streaming job is Map only?http://hadoop.apache.org/docs/r1.2.1/streaming.html#Specifying+Map-Only+Jobs-reduce...
http://issues.apache.org/jira/browse/MAPREDUCE-6200    Author: DeepakVohra, 2014-12-19, 15:09
[expand - 2 more] - Re: Upgrading findbugs - MapReduce - [mail # dev]
...So far we made great progress on fixing findbugs warnings. We're free offindbugs warnings in hdfs, nfs, and a couple other sub projects. There aretwo findbugs warnings left in hadoop-common....
   Author: Haohui Mai, 2014-12-18, 22:45
[MAPREDUCE-4662] JobHistoryFilesManager thread pool never expands - MapReduce - [issue]
...The job history file manager creates a threadpool with core size 1 thread, max pool size 3.   It never goes beyond 1 thread though because its using a LinkedBlockingQueue which doesn't ...
http://issues.apache.org/jira/browse/MAPREDUCE-4662    Author: Thomas Graves, 2014-12-16, 20:15
[MAPREDUCE-6191] TestJavaSerialization fails with getting incorrect MR job result - MapReduce - [issue]
...TestJavaSerialization#testMapReduceJob() fails with getting incorrect MR job result:"junit.framework.ComparisonFailure: expected:<[a ]1> but was:<[0 1]1>"...
http://issues.apache.org/jira/browse/MAPREDUCE-6191    Author: sam liu, 2014-12-16, 18:26
[MAPREDUCE-6166] Reducers do not validate checksum of map outputs when fetching directly to disk - MapReduce - [issue]
...In very large map/reduce jobs (50000 maps, 2500 reducers), the intermediate map partition output gets corrupted on disk on the map side. If this corrupted map output is too large to shuffle ...
http://issues.apache.org/jira/browse/MAPREDUCE-6166    Author: Eric Payne, 2014-12-16, 18:12
[MAPREDUCE-6193] Hadoop 2.x MapReduce Job Counter Data Local Maps Lower than Hadoop 1.x - MapReduce - [issue]
...I run the MapReduce job at 400+ node of cluster based on Hadoop 2.4.0 confined scheduer is FairScheduer and I noticed Job Counter of Data-Local is much lower than Hadoop 1.x Such as these si...
http://issues.apache.org/jira/browse/MAPREDUCE-6193    Author: Xu Chen, 2014-12-16, 08:11
[MAPREDUCE-5756] CombineFileInputFormat.getSplits() including directories in its results - MapReduce - [issue]
...Trying to track down HIVE-6401, where we see some "is not a file" errors because getSplits() is giving us directories.  I believe the culprit is FileInputFormat.listStatus():  ...
http://issues.apache.org/jira/browse/MAPREDUCE-5756    Author: Jason Dere, 2014-12-16, 03:02
[MAPREDUCE-6196] Fix BigDecimal ArithmeticException in PiEstimator - MapReduce - [issue]
...Certain combinations of arguments to PiEstimator cause the following exception:java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result. at jav...
http://issues.apache.org/jira/browse/MAPREDUCE-6196    Author: Ray Chiang, 2014-12-16, 01:57
[MAPREDUCE-6197] Cache MapOutputLocations in ShuffleHandler - MapReduce - [issue]
...ShuffleHandler currently seems to create a map of mapId - mapInfo (file.out / index information) when it receives a message.This should be caching map info across requests, so that the a sca...
http://issues.apache.org/jira/browse/MAPREDUCE-6197    Author: Siddharth Seth, 2014-12-16, 01:08
[MAPREDUCE-5960] JobSubmitter's check whether job.jar is local is incorrect with no authority in job jar path. - MapReduce - [issue]
...$ mapred job -submit myjob.xml 2014-07-06 15:06:34.731 java[12120:1903] Unable to load realm info from SCDynamicStore14/07/06 15:06:34 WARN util.NativeCodeLoader: Unable to load native-hadoo...
http://issues.apache.org/jira/browse/MAPREDUCE-5960    Author: Gera Shegalov, 2014-12-15, 23:06
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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