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Re: Increasing Java Heap Space in Slave Nodes - MapReduce - [mail # user]
...That's right. You can verify it when you run your job by looking at the "job file" link at the top.  That shows you all the params used to start the job.  Just be aware to make sur...
   Author: Tim Robertson, 2013-09-07, 18:25
Re: Gathering Statistics for use by Mappers? - MapReduce - [mail # user]
...Hey Steve,  If I recall correctly the total number of counters you have is limited.  It's been a while since I looked at that code, but I seem to recall the counters get pushed to ...
   Author: Tim Robertson, 2013-09-01, 20:02
Re: Joining N DataSets???? - MapReduce - [mail # user]
...Sounds like you might be interested in Hive.    On Fri, Jul 26, 2013 at 9:11 PM, شجاع الرحمن بیگ wrote:  ...
   Author: Tim Robertson, 2013-07-26, 19:32
Re: replace separator in output.collect? - MapReduce - [mail # user]
...Assuming you are using a textfileoutputformat:   http://stackoverflow.com/questions/11031785/hadoop-key-and-value-are-tab-separated-in-the-output-file-how-to-do-it-semicol  So some...
   Author: Tim Robertson, 2013-06-11, 15:06
[expand - 2 more] - Re: Sending data to all reducers - MapReduce - [mail # user]
...Then I think you might be best exploring running a getmerge on each client.  How you trigger that is up to you, but something like Fabric [1] might help.  Others might propose diff...
   Author: Tim Robertson, 2012-08-23, 13:14
[expand - 1 more] - Re: Locks in M/R framework - MapReduce - [mail # user]
...Hi David,  You are probably aware, but you can specify the location of the data in Hive, so if you can keep it simple and manage directories you could rewrite the Hive metastore at the ...
   Author: Tim Robertson, 2012-08-13, 13:01
[expand - 4 more] - Re: Help tuning a cluster - COPY slow - MapReduce - [mail # user]
...Just to close this thread. Turns out it all came down to a mapred.reduce.parallel.copies being overwritten to 5 on the Hive submission. Cranking that back up and everything is happy again. &...
   Author: Tim Robertson, 2010-11-18, 13:38
Simple normalizing of data - MapReduce - [mail # user]
...Hi all,  I am processing a large tab file to format it suitable for loading into a database with a predefined schema. I have a tab file with a column that I need to normalize out to ano...
   Author: Tim Robertson, 2009-12-01, 09:05
[expand - 1 more] - Re: Newbie: Inner join - reduce side - MapReduce - [mail # user]
...Ok, I missed the org.apache.hadoop.contrib.utils.join which obviously does this exact thing...  Sorry, answering my own question Tim   On Thu, Nov 12, 2009 at 4:14 PM, Tim Robertso...
   Author: Tim Robertson, 2009-11-12, 15:19
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