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RE: How to change the separator of INSERT OVERWRITE LOCAL DIRECTORY - Hive - [mail # user]
...Works for me like this, using the most recent Hive on AWS, using a ~ delimiter:  row format delimited fields terminated by '~' stored as textfile location 's3://mybucket/path/to/data'; ...
   Author: Tony Burton, 2013-06-19, 15:21
RE: How to balance reduce job - MapReduce - [mail # user]
...The typical Partitioner method for assigning reducer r from reducers R is  r = hash(key) % count(R)  However if you find your partitioner is assigning your data to too few or one r...
   Author: Tony Burton, 2013-05-07, 15:13
RE: Bloom Filter analogy in SQL - HDFS - [mail # user]
...There’s an explanation of Bloom Filters and a MapReduce implementation in Chuck Lam’s book “Hadoop In Action”. Maybe that might guide the way a bit more.   From: Sai Sai [mailto:[EMAIL ...
   Author: Tony Burton, 2013-05-07, 14:56
[expand - 5 more] - RE: S3/EMR Hive: Load contents of a single file - Hive - [mail # user]
...No problem Keith - it was a worthwhile exercise for me to go back and double check everything was working as expected.     From: Keith Wiley [mailto:[EMAIL PROTECTED]]  Sent: ...
   Author: Tony Burton, 2013-03-27, 17:18
[expand - 1 more] - RE: Group names for custom Counters - MapReduce - [mail # user]
...Thanks Michel! Looks like that’ll do the trick.  It wasn’t clear originally from the docs that context.getCounter(groupName, counterName) will create the group and counter if they don’t...
   Author: Tony Burton, 2013-03-25, 11:02
hadoop file append - HDFS - [mail # user]
...Hi list,    I'm using Hadoop 1.0.3 for a MapReduce task and I thought it might be a simple job to append a Counter value and some text to the end of a file (which ultimately will b...
   Author: Tony Burton, 2013-03-18, 15:44
[expand - 8 more] - RE: hadoop 1.0.3 equivalent of MultipleTextOutputFormat - HDFS - [mail # user]
...Thanks for the reply Alejandro. Using a temp output directory was my first guess as well. What's the best way to proceed? I've come across FileSystem.rename but it's consistently returning f...
   Author: Tony Burton, 2013-02-01, 15:12
[expand - 7 more] - RE: HWI use on AWS/EMR - Hive - [mail # user]
...Hi Nitin (and others who have contributed)  Thanks again for the suggestions - however my original objective was to investigate HWI as an alternative to hive in CLI mode for less techie...
   Author: Tony Burton, 2013-01-21, 16:37
RE: Map output compression in Hadoop 1.0.3 - MapReduce - [mail # user]
...Hi Andy and list,  Apologies - I've not been looking at my list inbox for a while, so missed this request. I'm running some tests as I type, and will report back when they're done. I'm ...
   Author: Tony Burton, 2012-12-19, 09:19
[MAPREDUCE-4616] Improvement to MultipleOutputs javadocs - MapReduce - [issue]
...In the new API, and using MultipleOutputs it is possible to segment output into directories by using MultipleOutputs.write(KEYOUT key, VALUEOUT value, String baseOutputPath) in the Reducer t...
http://issues.apache.org/jira/browse/MAPREDUCE-4616    Author: Tony Burton, 2012-10-12, 17:04
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