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[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
[MAPREDUCE-6119] Ability to disable node update processing in MR AM - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-6119    Author: Jason Lowe, 2014-10-03, 23:29
[expand - 1 more] - Re: [VOTE] Release Apache Hadoop 2.5.1 RC0 - MapReduce - [mail # dev]
...+1 (binding)- verified signatures and digests- built from source- examined CHANGES.txt for items fixed in 2.5.1- deployed to a single-node cluster and ran some sample MR jobsJasonOn 09/05/20...
   Author: Jason Lowe, 2014-09-10, 15:22
[MAPREDUCE-6075] HistoryServerFileSystemStateStore can create zero-length files - MapReduce - [issue]
...When the history server state store writes a token file it uses IOUtils.cleanup() to close the file which will silently ignore errors.  This can lead to empty token files in the state s...
http://issues.apache.org/jira/browse/MAPREDUCE-6075    Author: Jason Lowe, 2014-09-06, 01:03
[MAPREDUCE-4157] ResourceManager should not kill apps that are well behaved - MapReduce - [issue]
...Currently when the ApplicationMaster unregisters with the ResourceManager, the RM kills (via the NMs) all the active containers for an application.  This introduces a race where the AM ...
http://issues.apache.org/jira/browse/MAPREDUCE-4157    Author: Jason Lowe, 2014-09-04, 02:00
[MAPREDUCE-4689] JobClient.getMapTaskReports on failed job results in NPE - MapReduce - [issue]
...When calling JobClient.getMapTaskReports for a job that has failed results in an NPE.  For example:Exception in thread "main" java.lang.NullPointerException at org.apache.hadoop.mapredu...
http://issues.apache.org/jira/browse/MAPREDUCE-4689    Author: Jason Lowe, 2014-09-04, 01:57
[MAPREDUCE-4691] Historyserver can report "Unknown job" after RM says job has completed - MapReduce - [issue]
...Example traceback from the client:2012-09-27 20:28:38,068 [main] INFO  org.apache.hadoop.mapred.ClientServiceDelegate - Application state is completed. FinalApplicationStatus=SUCCEEDED....
http://issues.apache.org/jira/browse/MAPREDUCE-4691    Author: Jason Lowe, 2014-09-04, 01:57
[MAPREDUCE-5251] Reducer should not implicate map attempt if it has insufficient space to fetch map output - MapReduce - [issue]
...A job can fail if a reducer happens to run on a node with insufficient space to hold a map attempt's output.  The reducer keeps reporting the map attempt as bad, and if the map attempt ...
http://issues.apache.org/jira/browse/MAPREDUCE-5251    Author: Jason Lowe, 2014-09-04, 00:52
[MAPREDUCE-5446] TestJobHistoryEvents and TestJobHistoryParsing have race conditions - MapReduce - [issue]
...TestJobHistoryEvents and TestJobHistoryParsing are not properly waiting for MRApp to finish.  Currently they are polling the service state looking for Service.STATE.STOPPED, but the ser...
http://issues.apache.org/jira/browse/MAPREDUCE-5446    Author: Jason Lowe, 2014-09-04, 00:48
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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