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[MAPREDUCE-6000] native-task: Simplify ByteBufferDataReader/Writer - MapReduce - [issue]
...The ByteBufferDataReader and ByteBufferDataWriter class are more complex than necessary: several methods related to reading/writing strings and char arrays are implemented but never used by ...
http://issues.apache.org/jira/browse/MAPREDUCE-6000    Author: Todd Lipcon, 2014-07-24, 09:24
[MAPREDUCE-5992] native-task test logs should not write to console - MapReduce - [issue]
...Most of our unit tests are configured with a log4j.properties test resource so they don't spout a bunch of output to the console. We need to do the same for native-task....
http://issues.apache.org/jira/browse/MAPREDUCE-5992    Author: Todd Lipcon, 2014-07-24, 09:21
[MAPREDUCE-5997] native-task: Use DirectBufferPool from Hadoop Common - MapReduce - [issue]
...The native task code has its own direct buffer pool, but Hadoop already has an implementation. HADOOP-10882 will move that implementation into Common, and this JIRA is to remove the duplicat...
http://issues.apache.org/jira/browse/MAPREDUCE-5997    Author: Todd Lipcon, 2014-07-24, 09:20
[MAPREDUCE-5996] native-task: Rename system tests into standard directory layout - MapReduce - [issue]
...Currently there are a number of tests in src/java/system. This confuses IDEs which think that the package should then be system.org.apache.hadoop instead of just org.apache.hadoop....
http://issues.apache.org/jira/browse/MAPREDUCE-5996    Author: Todd Lipcon, 2014-07-24, 07:17
[MAPREDUCE-5994] native-task: TestBytesUtil fails - MapReduce - [issue]
...This class appears to have some bugs. Two tests fail consistently on my system. BytesUtil itself appears to duplicate a lot of code from guava - we should probably just use the Guava functio...
http://issues.apache.org/jira/browse/MAPREDUCE-5994    Author: Todd Lipcon, 2014-07-24, 07:14
[MAPREDUCE-5974] Allow map output collector fallback - MapReduce - [issue]
...Currently we only allow specifying a single MapOutputCollector implementation class in a job. It would be nice to allow a comma-separated list of classes: we should try each collector implem...
http://issues.apache.org/jira/browse/MAPREDUCE-5974    Author: Todd Lipcon, 2014-07-23, 17:36
[MAPREDUCE-5993] native-task: simplify/remove dead code - MapReduce - [issue]
...The native task code has a bunch of code in it which isn't related to the map output collector. I suspect much if this is dead code. Let's remove it before we merge, so that the amount of co...
http://issues.apache.org/jira/browse/MAPREDUCE-5993    Author: Todd Lipcon, 2014-07-23, 05:19
[MAPREDUCE-5975] Fix native-task build on Ubuntu 13.10 - MapReduce - [issue]
...I'm having some issues building the native-task branch on my Ubuntu 13.10 box. This JIRA is to figure out and fix whatever's going on....
http://issues.apache.org/jira/browse/MAPREDUCE-5975    Author: Todd Lipcon, 2014-07-22, 21:09
[MAPREDUCE-496] If mapred.local.dir is configured on top of dfs.data.dir, hadoop should refuse to start rather than deleting the contents of local.dir - MapReduce - [issue]
...I just managed to blow away a DFS by accidentally misconfiguring dfs.data.dir and mapred.local.dir to contain several directories in common. On startup, the task tracker clears out mapred.lo...
http://issues.apache.org/jira/browse/MAPREDUCE-496    Author: Todd Lipcon, 2014-07-21, 18:04
[MAPREDUCE-5962] Support CRC32C in IFile - MapReduce - [issue]
...Currently, the IFile format used by the MR shuffle checksums all data using the zlib CRC32 polynomial. If we allow use of CRC32C instead, we can get a large reduction in CPU usage by leverag...
http://issues.apache.org/jira/browse/MAPREDUCE-5962    Author: Todd Lipcon, 2014-07-18, 16:40
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