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[MAPREDUCE-4740] only .jars can be added to the Distributed Cache classpath - MapReduce - [issue]
...Koji tracked down this one.$ cat mycat.sh#!/bin/shcat >& /dev/null$JAVA_HOME/bin/jinfo $PPID | grep java.class.pathexport | grep CLASSPATHls -l $ myfile=/user/me/myclasses.zip; yarn j...
http://issues.apache.org/jira/browse/MAPREDUCE-4740    Author: Robert Joseph Evans, 2013-02-06, 17:05
[MAPREDUCE-4748] Invalid event: T_ATTEMPT_SUCCEEDED at SUCCEEDED - MapReduce - [issue]
...We saw this happen when running a large pig script.2012-10-23 22:45:24,986 ERROR [AsyncDispatcher event handler] org.apache.hadoop.mapreduce.v2.app.job.impl.TaskImpl: Can't handle this event...
http://issues.apache.org/jira/browse/MAPREDUCE-4748    Author: Robert Joseph Evans, 2013-02-06, 17:05
[MAPREDUCE-4458] Warn if java.library.path is used for AM or Task - MapReduce - [issue]
...If java.library.path is used on the command line for launching an MRAppMaster or an MR Task, it could conflict with how standard Hadoop/HDFS JNI libraries and dependencies are found.  A...
http://issues.apache.org/jira/browse/MAPREDUCE-4458    Author: Robert Joseph Evans, 2013-01-19, 14:04
[MAPREDUCE-4912] Investigate ways to clean up double job commit prevention - MapReduce - [issue]
...Once MAPREDUCE-4819 goes in it fixes the issue where an OutputCommiter can double commit a job.  So that the output will never be touched after the job informs externally of success or ...
http://issues.apache.org/jira/browse/MAPREDUCE-4912    Author: Robert Joseph Evans, 2013-01-04, 15:28
[MAPREDUCE-4832] MR AM can get in a split brain situation - MapReduce - [issue]
...It is possible for a networking issue to happen where the RM thinks an AM has gone down and launches a replacement, but the previous AM is still up and running.  If the previous AM does...
http://issues.apache.org/jira/browse/MAPREDUCE-4832    Author: Robert Joseph Evans, 2013-01-04, 09:15
[MAPREDUCE-2494] Make the distributed cache delete entires using LRU priority - MapReduce - [issue]
...Currently the distributed cache will wait until a cache directory is above a preconfigured threshold.  At which point it will delete all entries that are not currently being used.  ...
http://issues.apache.org/jira/browse/MAPREDUCE-2494    Author: Robert Joseph Evans, 2012-11-21, 11:07
[MAPREDUCE-4805] History files are not move to where the history server sees them - MapReduce - [issue]
...It looks like MAPREDUCE-4723 added in a default case to the JobHistoryEventHandler that is causing it to have lots of issues for events that should just be ignored....
http://issues.apache.org/jira/browse/MAPREDUCE-4805    Author: Robert Joseph Evans, 2012-11-19, 16:55
[MAPREDUCE-4480] T_ATTEMPT_KILLED after SUCCEEDED can happen for reduces too - MapReduce - [issue]
...This does not seem to impact 0.23.  If speculative execution is enabled then a T_ATTEMPT_KILLED event can come in after the task has transitioned to SUCCEEDED.  This causes the Map...
http://issues.apache.org/jira/browse/MAPREDUCE-4480    Author: Robert Joseph Evans, 2012-11-15, 16:05
[MAPREDUCE-4799] Task Attempts Page has tools open, not job - MapReduce - [issue]
...When you go the the task attempts page either on the running AM or the history server the "Tools" section on the left is open, when it should be the "Job" section....
http://issues.apache.org/jira/browse/MAPREDUCE-4799    Author: Robert Joseph Evans, 2012-11-14, 15:33
[MAPREDUCE-4772] Fetch failures can take way too long for a map to be restarted - MapReduce - [issue]
...In one particular case we saw a NM go down at just the right time, that most of the reducers got the output of the map tasks, but not all of them.The ones that failed to get the output repor...
http://issues.apache.org/jira/browse/MAPREDUCE-4772    Author: Robert Joseph Evans, 2012-11-09, 14:02
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