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[MAPREDUCE-4301] Dedupe some strings in MRAM for memory savings - MapReduce - [issue]
...Recently an OutOfMemoryError caused one of our jobs to become a zombie (MAPREDUCE-4300).  It was a rather large job with 78000+ map tasks and only 750MB of heap configured.  I took...
http://issues.apache.org/jira/browse/MAPREDUCE-4301    Author: Robert Joseph Evans, 2012-06-05, 13:53
[MAPREDUCE-4233] NPE can happen in RMNMNodeInfo. - MapReduce - [issue]
...Caused by: java.lang.NullPointerException        at org.apache.hadoop.yarn.server.resourcemanager.RMNMInfo.getLiveNodeManagers(RMNMInfo.java:96)     &...
http://issues.apache.org/jira/browse/MAPREDUCE-4233    Author: Robert Joseph Evans, 2012-05-23, 20:28
[MAPREDUCE-4237] TestNodeStatusUpdater can fail if localhost has a domain associated with it - MapReduce - [issue]
...On some systems, RHEL where I work, localhost can resolve to localhost.localdomain.  TestNodeStatusUpdater can fail because the nodeid containes .localdomain which is not expected by th...
http://issues.apache.org/jira/browse/MAPREDUCE-4237    Author: Robert Joseph Evans, 2012-05-11, 13:08
[MAPREDUCE-4079] Allow MR AppMaster to limit ephemeral port range. - MapReduce - [issue]
...Having the MapReduce Application Masters bind to any ephemeral port makes it very difficult to setup ACLs.  mapreduce.job.am-access-disabled from MAPREDUCE-3251 is not a practical perma...
http://issues.apache.org/jira/browse/MAPREDUCE-4079    Author: Robert Joseph Evans, 2012-04-25, 13:24
[MAPREDUCE-3002] Delink History Context from AppContext - MapReduce - [issue]
...Currently the JobHistory Server has a HistoryContext that pretends to be a Map Reduce ApplicationMaster's AppContext so that UI pages can be shared between the two.  This is not ideal b...
http://issues.apache.org/jira/browse/MAPREDUCE-3002    Author: Robert Joseph Evans, 2012-04-24, 21:41
[MAPREDUCE-3994] Port TestEmptyJob to maven, possibly using the MiniMRYarnCluster - MapReduce - [issue]
...TestEmptyJob started failing recently.  MAPREDUCE-3982 fixes that failure, but it would have been good to have the test as part of maven so that the failure would have been caught long ...
http://issues.apache.org/jira/browse/MAPREDUCE-3994    Author: Robert Joseph Evans, 2012-04-18, 19:58
[MAPREDUCE-3972] Locking and exception issues in JobHistory Server. - MapReduce - [issue]
...The JobHistory server's locking is inconsistent and wrong in some cases.  This is not super critical because the issues would only show up if a job is being cleaned up or moved from int...
http://issues.apache.org/jira/browse/MAPREDUCE-3972    Author: Robert Joseph Evans, 2012-04-18, 14:06
[MAPREDUCE-4059] The history server should have a separate pluggable storage/query interface - MapReduce - [issue]
...The history server currently caches all parsed jobs in RAM.  These jobs can be very large because of counters.  It would be nice to have a pluggable interface for the cacheing and ...
http://issues.apache.org/jira/browse/MAPREDUCE-4059    Author: Robert Joseph Evans, 2012-04-11, 14:09
[MAPREDUCE-3983] TestTTResourceReporting can fail, and should just be deleted - MapReduce - [issue]
...TestTTResourceReporting can fail.  It is an ant test for task trackers which shoudl just be removed because task trackers are no longer supported outside of the ant tests....
http://issues.apache.org/jira/browse/MAPREDUCE-3983    Author: Robert Joseph Evans, 2012-04-11, 14:09
[MAPREDUCE-4131] Update the HistoryStorage interface to be more complete and robust - MapReduce - [issue]
...MAPREDUCE-4059 introduced a pluggable HistoryStorage interface.  The interface right now is very minimal and mostly is the result of refactoring/moving other methods into the new interf...
http://issues.apache.org/jira/browse/MAPREDUCE-4131    Author: Robert Joseph Evans, 2012-04-10, 15:18
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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