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[MAPREDUCE-4913] TestMRAppMaster#testMRAppMasterMissingStaging occasionally exits - MapReduce - [issue]
...testMRAppMasterMissingStaging will sometimes cause the JVM to exit due to this error from AsyncDispatcher:2013-01-05 02:14:54,682 FATAL [AsyncDispatcher event handler] event.AsyncDispatcher ...
http://issues.apache.org/jira/browse/MAPREDUCE-4913    Author: Jason Lowe, 2014-09-04, 00:25
[MAPREDUCE-4819] AM can rerun job after reporting final job status to the client - MapReduce - [issue]
...If the AM reports final job status to the client but then crashes before unregistering with the RM then the RM can run another AM attempt.  Currently AM re-attempts assume that the prev...
http://issues.apache.org/jira/browse/MAPREDUCE-4819    Author: Jason Lowe, 2014-09-04, 00:25
[MAPREDUCE-4797] LocalContainerAllocator can loop forever trying to contact the RM - MapReduce - [issue]
...If LocalContainerAllocator has trouble communicating with the RM it can end up retrying forever if the nature of the error is not a YarnException.This can be particulary bad if the connectio...
http://issues.apache.org/jira/browse/MAPREDUCE-4797    Author: Jason Lowe, 2014-09-04, 00:17
[MAPREDUCE-5043] Fetch failure processing can cause AM event queue to backup and eventually OOM - MapReduce - [issue]
...Saw an MRAppMaster with a 3G heap OOM.  Upon investigating another instance of it running, we saw the UI in a weird state where the task table and task attempt tables in the job overvie...
http://issues.apache.org/jira/browse/MAPREDUCE-5043    Author: Jason Lowe, 2014-09-03, 23:57
[MAPREDUCE-4794] DefaultSpeculator generates error messages on normal shutdown - MapReduce - [issue]
...DefaultSpeculator can log the following error message on a normal shutdown of the ApplicationMaster:2012-11-13 01:35:31,841 ERROR [DefaultSpeculator background processing] org.apache.hadoop....
http://issues.apache.org/jira/browse/MAPREDUCE-4794    Author: Jason Lowe, 2014-09-03, 23:57
[MAPREDUCE-4871] AM uses mapreduce.jobtracker.split.metainfo.maxsize but mapred-default has mapreduce.job.split.metainfo.maxsize - MapReduce - [issue]
...When the user needs to configure a larger split metainfo file size, mapred-default.xml points to the mapreduce.job.split.metainfo.maxsize property.  However the ApplicationMaster actual...
http://issues.apache.org/jira/browse/MAPREDUCE-4871    Author: Jason Lowe, 2014-09-03, 23:57
[MAPREDUCE-5042] Reducer unable to fetch for a map task that was recovered - MapReduce - [issue]
...If an application attempt fails and is relaunched the AM will try to recover previously completed tasks.  If a reducer needs to fetch the output of a map task attempt that was recovered...
http://issues.apache.org/jira/browse/MAPREDUCE-5042    Author: Jason Lowe, 2014-09-03, 23:57
[MAPREDUCE-5027] Shuffle does not limit number of outstanding connections - MapReduce - [issue]
...The ShuffleHandler does not have any configurable limits to the number of outstanding connections allowed.  Therefore a node with many map outputs and many reducers in the cluster tryin...
http://issues.apache.org/jira/browse/MAPREDUCE-5027    Author: Jason Lowe, 2014-09-03, 23:57
[MAPREDUCE-5456] TestFetcher.testCopyFromHostExtraBytes is missing - MapReduce - [issue]
...I noticed that the test to verify the fix from MAPREDUCE-5308 was deleted by MAPREDUCE-5194.  It looks like an accidental deletion from an upmerge.  We should reinstate this unit t...
http://issues.apache.org/jira/browse/MAPREDUCE-5456    Author: Jason Lowe, 2014-09-03, 21:33
[MAPREDUCE-5888] Failed job leaves hung AM after it unregisters - MapReduce - [issue]
...When a job fails the AM hangs during shutdown.  A non-daemon thread pool executor thread prevents the JVM teardown from completing, and the AM lingers on the cluster for the AM expiry i...
http://issues.apache.org/jira/browse/MAPREDUCE-5888    Author: Jason Lowe, 2014-09-03, 21:33
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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