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Fair scheduler not assigning tasks - MapReduce - [mail # user]
...I've been using Fair Scheduler with Hadoop 1.0.4 for f few months now with no issues what so ever. All of a sudden I have a problem where jobs are in status UNASSIGNED. Jobs submitted are pe...
   Author: Amit Sela, 2014-01-20, 09:30
manipulating key in combine phase - MapReduce - [mail # user]
...Hi all,  I was wondering if it is possible to manipulate the key during combine:  Say I have a mapreduce job where the key has many qualifiers. I would like to "split" the key into...
   Author: Amit Sela, 2014-01-12, 16:25
Re: Setting up Snappy compression in Hadoop - MapReduce - [mail # user]
...I did everything mentioned in the link Ted mentioned, and the test actually works, but using Snappy for MapReduce map output compression still fails with "native snappy library not available...
   Author: Amit Sela, 2014-01-02, 11:37
Add machine with bigger storage to cluster - MapReduce - [mail # user]
...I would like to add new machines to my existing cluster but they won't be similar to the current nodes. I have to scenarios I'm thinking of:  1. What are the implications (besides initi...
   Author: Amit Sela, 2013-09-30, 13:07
Bzip2 vs Gzip - MapReduce - [mail # user]
...Hi all, I'm using hadoop 1.0.4 and using gzip to keep the logs processed by hadoop (logs are gzipped into block size files). I read that bzip2 is splittable. Is it so in hadoop 1.0.4 ? Does ...
   Author: Amit Sela, 2013-09-17, 20:37
Fair Scheduler pools regardless of users - MapReduce - [mail # user]
...Hi all,  I was wondering if there is a way to let fair scheduler ignore the user and submit a job to a specific pool. I would like to have 3/4 pools:  1. Very short (~1 min) routin...
   Author: Amit Sela, 2013-07-08, 10:53
Capacity scheduler for dividing cluster resousrces - MapReduce - [mail # user]
...Hi everyone,  I'm running Hadoop 1.0.4 on a modest cluster (~20 machines) and I would like to divide my cluster resources by job's process time. The jobs running on the cluster can be d...
   Author: Amit Sela, 2013-07-07, 21:19
Re: Configuration clone constructor not cloning classloader - MapReduce - [mail # user]
...@Tom: I submitted the patch. Also added cloning of loadDefaults that was missing as well. I attached the patch to the JIRA you mentioned, first time so hope it's OK...  Thanks.   O...
   Author: Amit Sela, 2013-04-21, 11:05
Setting up a Hadoop client in OSGI bundle - MapReduce - [mail # user]
...Hi all,  I'm trying to setup an Hadoop client for job submissions (and more) as an OSGI bundle.  I came over a lot of hardships but I'm kinda stuck now.  When I create a new J...
   Author: Amit Sela, 2013-04-17, 18:41
[expand - 4 more] - Re: Submitting mapreduce and nothing happens - MapReduce - [mail # user]
...Input path includes data in it. I also tried job.waitFromComplete(true) but it acts exactly the same. For what it's worth, in the staging dir in hdfs I do see empty (or cleaned up) folders c...
   Author: Amit Sela, 2013-04-17, 07:24
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