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[MAPREDUCE-4337] Support multiple reducers in 'uber' jobs - MapReduce - [issue]
...This is MAPREDUCE-434 for 'uber' jobs (jobs that run in the same container as the AM)....
http://issues.apache.org/jira/browse/MAPREDUCE-4337    Author: Tom White, 2012-06-12, 02:24
[MAPREDUCE-4148] MapReduce should not have a compile-time dependency on HDFS - MapReduce - [issue]
...MapReduce depends on HDFS's DelegationTokenIdentifier (for printing token debug information). We should remove this dependency and MapReduce's compile-time dependency on HDFS....
http://issues.apache.org/jira/browse/MAPREDUCE-4148    Author: Tom White, 2012-05-16, 05:55
[MAPREDUCE-4226] ConcurrentModificationException in FileSystemCounterGroup - MapReduce - [issue]
...This was seen in a Hive job. I'll attach a failing test case....
http://issues.apache.org/jira/browse/MAPREDUCE-4226    Author: Tom White, 2012-05-08, 14:03
[MAPREDUCE-4230] Ensure framework counter group synchronization is correct for serialization/deserialization - MapReduce - [issue]
...FrameworkCounterGroup and FileSystemCounterGroup may be susceptible to a race outlined in https://issues.apache.org/jira/browse/MAPREDUCE-4226?focusedCommentId=13269657&page=com.atlassia...
http://issues.apache.org/jira/browse/MAPREDUCE-4230    Author: Tom White, 2012-05-07, 19:13
[MAPREDUCE-4217] Task commit waits for up to 3 seconds - MapReduce - [issue]
...Following MAPREDUCE-2450, TaskReporter#stopCommunicationThread may wait up to 3 seconds (the value of PROGRESS_INTERVAL) before it returns. This can be noticeable for short running tasks....
http://issues.apache.org/jira/browse/MAPREDUCE-4217    Author: Tom White, 2012-05-01, 21:48
[MAPREDUCE-4138] Reduce memory usage of counters due to non-static nested classes - MapReduce - [issue]
...FrameworkCounter is a non-static nested class of FrameworkCounterGroup which means it retains a reference to the outer class, which isn't really needed....
http://issues.apache.org/jira/browse/MAPREDUCE-4138    Author: Tom White, 2012-04-27, 14:03
[MAPREDUCE-4158] Port mapreduce.MapFileOutputFormat to branch-1 - MapReduce - [issue]
...MapFileOutputFormat was missed in MAPREDUCE-3607....
http://issues.apache.org/jira/browse/MAPREDUCE-4158    Author: Tom White, 2012-04-24, 17:04
[MAPREDUCE-3378] Create a single 'hadoop-mapreduce' Maven artifact - MapReduce - [issue]
...In 0.23.0 there are multiple artifacts (hadoop-mapreduce-client-app, hadoop-mapreduce-client-common, hadoop-mapreduce-client-core, etc). It would be simpler for users to declare a dependency...
http://issues.apache.org/jira/browse/MAPREDUCE-3378    Author: Tom White, 2012-04-14, 00:17
[MAPREDUCE-4147] YARN should not have a compile-time dependency on HDFS - MapReduce - [issue]
...YARN doesn't (and shouldn't) use any HDFS-specific APIs, so it should not declare HDFS as a compile-time dependency....
http://issues.apache.org/jira/browse/MAPREDUCE-4147    Author: Tom White, 2012-04-13, 14:04
[MAPREDUCE-3935] Annotate Counters.Counter and Counters.Group as @Public - MapReduce - [issue]
...For clarity these inner classes should be marked as public stable....
http://issues.apache.org/jira/browse/MAPREDUCE-3935    Author: Tom White, 2012-03-28, 07:42
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