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Re: Getting a temporary directory in map jobs - MapReduce - [mail # user]
...On 12/21/2010 09:50 PM, Chase Bradford wrote:  Mostly correct.  But just FYI, the temp file does not automatically get  deleted (see:  http://download.oracle.com/javase/6...
   Author: David Rosenstrauch, 2010-12-22, 17:40
[expand - 3 more] - Re: How to Influence Reduce Task Location. - MapReduce - [mail # user]
...Not a very good approach for numerous reasons.  (e.g., you generally  don't want to run another processing-intensive app - like a database -  on a hadoop node, you don't want ...
   Author: David Rosenstrauch, 2010-12-20, 03:36
Re: Reduce Task Priority / Scheduler - MapReduce - [mail # user]
...On 12/19/2010 10:39 AM, Martin Becker wrote:  Not that I know of.  And again, this kind of defeats the whole purpose  of Hadoop.  The whole idea is that tasks are execute...
   Author: David Rosenstrauch, 2010-12-20, 03:32
Re: Passing messages - MapReduce - [mail # user]
...On 12/18/2010 11:04 AM, Martin Becker wrote:  You could use Zookeeper to do this.  DR...
   Author: David Rosenstrauch, 2010-12-20, 03:24
[expand - 3 more] - Re: M/R file gather/scatter issue - MapReduce - [mail # user]
...Seems like CombineFileInputFormat.createPool() might help here.  But I'm  a little unclear on usage.  That method is protected ... and so then I  guess only accessible by...
   Author: David Rosenstrauch, 2010-12-08, 22:21
Re: Starting a Hadoop job programtically - MapReduce - [mail # user]
...On 11/22/2010 04:39 PM, [EMAIL PROTECTED] wrote:  http://hadoop.apache.org/common/docs/r0.20.1/api/org/apache/hadoop/mapreduce/Job.html#submit%28%29...
   Author: David Rosenstrauch, 2010-11-22, 21:51
Re: running job without jar - MapReduce - [mail # user]
...On 10/26/2010 03:01 AM, exception wrote:  Yes, this can be easily done.  See:  http://www.mail-archive.com/[EMAIL PROTECTED]/msg01114.html  HTH,  DR...
   Author: David Rosenstrauch, 2010-10-26, 14:13
Re: Failures in the reducers - MapReduce - [mail # user]
...We ran into this recently.  Solution was to bump up the value of the  dfs.datanode.max.xcievers setting.  HTH,  DR  On 10/12/2010 03:53 PM, rakesh kothari wrote: 24 ...
   Author: David Rosenstrauch, 2010-10-13, 15:57
[expand - 4 more] - Re: JobClient using deprecated JobConf - MapReduce - [mail # user]
...On 09/25/2010 10:24 AM, Martin Becker wrote:  Also easy to do.  All that the -jt and -fs parms do is eventually set appropriate values  in a Configuration object.  You ca...
   Author: David Rosenstrauch, 2010-09-27, 15:54
Re: Deployment of jar files at startup - MapReduce - [mail # user]
...On 09/14/2010 10:10 PM, Pete Tyler wrote:  For step 2, you have 2 options on how to implement: a) call DistributedCache.addFileToClassPath(jarFileURI, conf); b) have your app implement ...
   Author: David Rosenstrauch, 2010-09-15, 17:46
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