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Re: increase number of map tasks - Hadoop - [mail # user]
...Hi Satish       What is your value for mapred.max.split.size? Try setting these values as well mapred.min.split.size=0 (it is the default value) mapred.max.split.size=40  ...
   Author: Bejoy Ks, 2012-01-09, 17:41
Re: How to create Output files of about fixed size - Hadoop - [mail # user]
...Hi JJ        If you use the default TextInputFormat, it wont do the job as it would generate at least one split for each file. So in your case there would be a min of 78 ...
   Author: Bejoy Ks, 2011-12-21, 20:13
[expand - 1 more] - Re: DistributedCache in NewAPI on 0.20.X branch - Hadoop - [mail # user]
...Hi Shi          My Bad, the syntax i posted last time was not the right one , sorry was from my hand held  @Override public void setup(Context context) {  ...
   Author: Bejoy Ks, 2011-12-17, 19:45
Re: Where do i see Sysout statements after building example ? - Hadoop - [mail # user]
...Adding on to Harsh's response. If your Sysouts are on mapper or reducer classes, you can get the same from from WebUI  as well, http://:50030/jobtracker.jsp . You need to select your jo...
   Author: Bejoy Ks, 2011-12-13, 17:35
Re: MAX_FETCH_RETRIES_PER_MAP (TaskTracker dying?) - Hadoop - [mail # user]
...Hi Chris          From the stack trace, it looks like a JVM corruption issue. It is a known issue and have been fixed in CDH3u2, i believe an upgrade would solve you...
   Author: Bejoy Ks, 2011-12-05, 21:11
Re: Pig Output - Hadoop - [mail # user]
...Hi Aaron          Instead of copyFromLocal use getmerge. It would do your job. The syntax for CLI is hadoop fs -getmerge  /xyz.txt   Hope it helps!... &nbs...
   Author: Bejoy Ks, 2011-12-05, 20:34
[expand - 1 more] - Re: Multiple Mappers for Multiple Tables - Hadoop - [mail # user]
...Hi Justin,             Just to add on to my response. If you need to fetch data from rdbms on your mapper using your custom mapreduce code you can use the DBInp...
   Author: Bejoy Ks, 2011-12-05, 20:31
Re: Multiple reducers - Hadoop - [mail # user]
...Hi Hoot  You can specify the number of reducers explicitly using -D mapred.reduce.tasks=n.  hadoop jar wordcount.jar com.wc.WordCount –D mapred.reduce.tasks=n /inp ut /output  ...
   Author: Bejoy Ks, 2011-11-29, 14:45
[expand - 2 more] - Re: Issue with DistributedCache - Hadoop - [mail # user]
...My Bad, I pasted the wrong file. It is updated now, did a few tiny modifications(commented in code) and it was working fine for me. http://pastebin.com/RDuZX7Qd  Alex, Thanks a lot for ...
   Author: Bejoy Ks, 2011-11-24, 16:03
Re: MapReduce Examples - Hadoop - [mail # user]
...Hi Hans-Peter            I can just help you out with a different example than the conventional Word Count but not really sophisticated and real time. This just...
   Author: Bejoy Ks, 2011-11-24, 12:22
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