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Should mapreduce.ReduceContext reuse same object in nextKeyValue? - MapReduce - [mail # user]
...I created my own Writable class to store 3 pieces of information.  In   my mapreducer.Reducer class I collect all of them and then process as   a group, ie:  reduce(key, ...
   Author: Wilkes, Chris, 2010-01-12, 23:53
[expand - 3 more] - Re: Conditional Selects - Pig - [mail # user]
...As a suffix to what Dmitriy described - just add a project to pick the  columns you need. c = join a by filename, b by filename PARALLEL $MY_PARALLELISM; d = foreach c generate a::filen...
   Author: Mridul Muralidharan, 2010-01-12, 23:27
[expand - 4 more] - Re: revert of HDFS-127? (was Re: Vote on hbase-0.20.3RC1) - HBase - [mail # dev]
...I don't get it, why would HBase need to reopen the hfile?  Has it gone bad? If it has, why would reopening help?  Or are you talking about resetting the state in the DFSClient by f...
   Author: Ryan Rawson, 2010-01-12, 23:21
[expand - 2 more] - Re: Bible Code and some input format ideas - Hadoop - [mail # user]
...On Tue, Jan 12, 2010 at 5:37 PM, Alan Gates  wrote: e to e your ve to in t  Alan,  You could split by book, there is no standard way to do it really. I spoke to someone off li...
   Author: Edward Capriolo, 2010-01-12, 22:49
[HIVE-51] Generate and accept JSON as the input-output format from mappers and reducers - Hive - [issue]
...set mapred.data.format=JSON;....MAP USING 'python filter.py'....;would mean that filter.py would receive a JSON formatted dictionary of the columns instead of a tab-delimited string.{ column...
http://issues.apache.org/jira/browse/HIVE-51    Author: Venky Iyer, 2010-01-12, 22:41
[AVRO-312] Generate documentation for Python with Sphinx - Avro - [issue]
http://issues.apache.org/jira/browse/AVRO-312    Author: Jeff Hammerbacher, 2010-01-12, 22:34
[expand - 3 more] - Re: isSplitable() deprecated - Hadoop - [mail # user]
...Make sure you have gcc, g++ installed?  -Todd  On Tue, Jan 12, 2010 at 10:57 AM, Ted Yu  wrote:  ...
   Author: Todd Lipcon, 2010-01-12, 22:32
[expand - 5 more] - Re: new committer: Jeff Hammerbacher - Avro - [mail # dev]
...Congratulations Jeff!  yongqiang On 1/12/10 12:12 PM, "Jeff Hammerbacher"  wrote:  ...
   Author: Yongqiang He, 2010-01-12, 22:19
[expand - 4 more] - Re: Reading table sequentially... - HBase - [mail # user]
...Cool.  That works.  Just couple quick questions to confirm:  All the Keys returned by this code are guaranteed to be in order by the key values, correct?  Also, for some ...
   Author: Something Something, 2010-01-12, 22:01
[expand - 4 more] - RE: how to load big files into Hbase without crashing? - MapReduce - [mail # user]
...It's true that my specific case is specific to HBase. But there is also a more general question of how to set the # of mappers for a particular job. There may be reasons other than HBase to ...
   Author: Clements, Michael, 2010-01-12, 21:52
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB