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[MAPREDUCE-1666] job output chroot support - MapReduce - [issue]
...It would be useful to be able to submit the same job and have it chroot the output to a different base directory before execution.  This would allow for input to be the same, but output...
http://issues.apache.org/jira/browse/MAPREDUCE-1666    Author: Allen Wittenauer, 2010-04-01, 22:13
Re: Setting the group for output files - MapReduce - [mail # user]
...  On 3/11/10 11:05 AM, "Gregory Lawrence"  wrote:  HDFS uses sticky groups for directories.  In other words, on creation, the group of the dir is what the group of the fi...
   Author: Allen Wittenauer, 2010-03-11, 19:08
Re: Moving HDFS raid package from HDFS repository to MAPREDUCE repository - MapReduce - [mail # dev]
...On 1/22/10 10:49 AM, "Dhruba Borthakur"  wrote:   Am I reading this correctly:  we're moving HDFS RAID to MR because the *test code* fails?...
   Author: Allen Wittenauer, 2010-01-22, 18:55
[expand - 1 more] - Re: Question about setting the number of mappers. - MapReduce - [mail # user]
...This means that -every node- can have 10 map tasks and 10 reduce tasks running simultaneously.  If you want to limit how many tasks run -per node- in order to change the performance pro...
   Author: Allen Wittenauer, 2010-01-19, 21:47
Re: why one mapper process per block? - MapReduce - [mail # dev]
...  On 1/15/10 3:55 PM, "Erez Katz"  wrote:  Probably just setting mapred.min.split.size to a high enough value....
   Author: Allen Wittenauer, 2010-01-16, 00:00
[MAPREDUCE-942] job history logs should have a sane extension - MapReduce - [issue]
...It is not obvious by looking at:hostname_1251411205412_job_200908271513_0010_DrWho_hadoop-0.20.0-test.jarthat this is a job history log file rather than a jar file....
http://issues.apache.org/jira/browse/MAPREDUCE-942    Author: Allen Wittenauer, 2009-11-10, 19:35
[MAPREDUCE-1163] hdfsJniHelper.h: Yahoo! specific paths are encoded - MapReduce - [issue]
...This header file defines USER_CLASSPATH as "/home/y/libexec/hadoop/conf:/home/y/libexec/hadoop/lib/hadoop-0.1.0.jar" .  This define doesn't appear to actually be used anywhere.  Bu...
http://issues.apache.org/jira/browse/MAPREDUCE-1163    Author: Allen Wittenauer, 2009-11-05, 08:54
Re: How to use MultipleTextOutputFormat ? - MapReduce - [mail # user]
...  On 10/27/09 3:34 AM, "tim robertson"  wrote:   I wouldn't recommend running your grid/jobs as root. :)...
   Author: Allen Wittenauer, 2009-10-27, 20:03
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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