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[MAPREDUCE-4760] Make a version of Counters that is composite for the job and stores the counter values in arrays - MapReduce - [issue]
...String interning reduced the size of counters a lot.  After that and the fix for a memory leak in the IPC server a job with 20000 map tasks and 3000 reducers takes about 200MB to store ...
http://issues.apache.org/jira/browse/MAPREDUCE-4760    Author: Robert Joseph Evans, 2012-10-31, 17:38
[MAPREDUCE-4303] Look at using String.intern to dedupe some Strings - MapReduce - [issue]
...MAPREDUCE-4301 fixes one issue with too many duplicate strings, but there are other places where it is not as simple to remove the duplicates.  In these cases the source of the strings ...
http://issues.apache.org/jira/browse/MAPREDUCE-4303    Author: Robert Joseph Evans, 2012-10-24, 15:03
[MAPREDUCE-4300] OOM in AM can turn it into a zombie. - MapReduce - [issue]
...It looks like 4 threads in the AM died with OOM but not the one pinging the RM.stderr for this AMWARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated. Please use org.apache.hado...
http://issues.apache.org/jira/browse/MAPREDUCE-4300    Author: Robert Joseph Evans, 2012-10-11, 18:48
[MAPREDUCE-4647] We should only unjar jobjar if there is a lib directory in it. - MapReduce - [issue]
...For backwards compatibility we recently added made is so we would unjar the job.jar and add anything to the classpath in the lib directory of that jar.  But this also slows job startup ...
http://issues.apache.org/jira/browse/MAPREDUCE-4647    Author: Robert Joseph Evans, 2012-09-30, 01:55
[MAPREDUCE-4423] Potential infinite fetching of map output - MapReduce - [issue]
...Inside Fetcher.java there are a few cases where an error can happen and the corresponding map task is not marked as a fetch failure.  One of these is if the Shuffle server returns a mal...
http://issues.apache.org/jira/browse/MAPREDUCE-4423    Author: Robert Joseph Evans, 2012-09-07, 22:10
[MAPREDUCE-4373] Fix Javadoc warnings in JobClient. - MapReduce - [issue]
...It looks like MAPREDUCE-4355 added in two new javadoc warnings.[WARNING] /home/jenkins/jenkins-slave/workspace/PreCommit-MAPREDUCE-Build/trunk/hadoop-mapreduce-project/hadoop-mapreduce-clien...
http://issues.apache.org/jira/browse/MAPREDUCE-4373    Author: Robert Joseph Evans, 2012-09-07, 22:10
[MAPREDUCE-4611] MR AM dies badly when Node is decomissioned - MapReduce - [issue]
...The MR AM always thinks that it is being killed by the RM when it gets a kill signal and it has not finished processing yet.  In reality the RM kill signal is only sent when the client ...
http://issues.apache.org/jira/browse/MAPREDUCE-4611    Author: Robert Joseph Evans, 2012-09-01, 15:00
[MAPREDUCE-4600] TestTokenCache.java from MRV1 no longer compiles - MapReduce - [issue]
...    [javac] hadoop-mapreduce-project/build.xml:569: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds &n...
http://issues.apache.org/jira/browse/MAPREDUCE-4600    Author: Robert Joseph Evans, 2012-08-29, 15:01
[MAPREDUCE-4503] Should throw InvalidJobConfException if duplicates found in cacheArchives or cacheFiles - MapReduce - [issue]
...in 1.0 if a file was both in a jobs cache archives and cache files, and InvalidJobConfException was thrown.  We should replicate this behavior on mrv2.  We should also extend it so...
http://issues.apache.org/jira/browse/MAPREDUCE-4503    Author: Robert Joseph Evans, 2012-08-15, 23:51
[MAPREDUCE-4538] Please delete me - MapReduce - [issue]
...I am in a bad state will someone please delete me....
http://issues.apache.org/jira/browse/MAPREDUCE-4538    Author: Robert Joseph Evans, 2012-08-15, 05:00
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