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[MAPREDUCE-6219] Reduce memory required for FileInputFormat located status optimization - MapReduce - [issue]
...MAPREDUCE-1981 introduced an optimization to drastically reduce the number of namenode operations required to compute input splits when processing a directory.  However it requires more...
http://issues.apache.org/jira/browse/MAPREDUCE-6219    Author: Jason Lowe, 2015-01-20, 21:36
[MAPREDUCE-6172] TestDbClasses timeouts are too aggressive - MapReduce - [issue]
...Some of the TestDbClasses test timeouts are only 1 second, and some of those tests perform disk I/O which could easily exceed the test timeout if the disk is busy or there's some other hiccu...
http://issues.apache.org/jira/browse/MAPREDUCE-6172    Author: Jason Lowe, 2014-12-02, 15:27
[MAPREDUCE-5885] build/test/test.mapred.spill causes release audit warnings - MapReduce - [issue]
...Multiple unit tests are creating files under hadoop-mapreduce-client-jobclient/build/test/test.mapred.spill which are causing release audit warnings during Jenkins patch precommit builds. &n...
http://issues.apache.org/jira/browse/MAPREDUCE-5885    Author: Jason Lowe, 2014-12-01, 03:11
[MAPREDUCE-5891] Improved shuffle error handling across NM restarts - MapReduce - [issue]
...To minimize the number of map fetch failures reported by reducers across an NM restart it would be nice if reducers only reported a fetch failure after trying for at specified period of time...
http://issues.apache.org/jira/browse/MAPREDUCE-5891    Author: Jason Lowe, 2014-12-01, 03:11
[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-6162] mapred hsadmin fails on a secure cluster - MapReduce - [issue]
...Attempts to use mapred hsadmin fail on a secure cluster for a couple of reasons. The HSAdmin client isn't configuring the principal config key for the protocol, resulting in a "Failed to spe...
http://issues.apache.org/jira/browse/MAPREDUCE-6162    Author: Jason Lowe, 2014-11-18, 15:29
[MAPREDUCE-5114] Subsequent AM attempt can crash trying to read prior AM attempt information - MapReduce - [issue]
...Saw the second AM attempt of a job fail early during startup because it tried to read the AMInfos from the previous attempt's history file and hit an error that wasn't an IOException.  ...
http://issues.apache.org/jira/browse/MAPREDUCE-5114    Author: Jason Lowe, 2014-11-14, 16:09
[MAPREDUCE-6022] map_input_file is missing from streaming job environment - MapReduce - [issue]
...When running a streaming job the 'map_input_file' environment variable is not being set.  This property is deprecated, but in the past deprecated properties still appeared in a stream j...
http://issues.apache.org/jira/browse/MAPREDUCE-6022    Author: Jason Lowe, 2014-10-30, 15:17
[MAPREDUCE-4818] Easier identification of tasks that timeout during localization - MapReduce - [issue]
...When a task is taking too long to localize and is killed by the AM due to task timeout, the job UI/history is not very helpful.  The attempt simply lists a diagnostic stating it was kil...
http://issues.apache.org/jira/browse/MAPREDUCE-4818    Author: Jason Lowe, 2014-10-22, 21:22
[MAPREDUCE-5542] Killing a job just as it finishes can generate an NPE in client - MapReduce - [issue]
...If a client tries to kill a job just as the job is finishing then the client can crash with an NPE....
http://issues.apache.org/jira/browse/MAPREDUCE-5542    Author: Jason Lowe, 2014-10-18, 16:10
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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