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Re: Any reference for upgrade hadoop from 1.x to 2.2 - Hadoop - [mail # user]
...Thanks Sandy! These seem helpful!  "MapReduce cluster configuration options have been split into YARN configuration options, which go in yarn-site.xml; and MapReduce configuration optio...
   Author: Robert Dyer, 2013-11-22, 15:37
Re: Hadoop 2.2.0 MR tasks failing - Hadoop - [mail # user]
...The logs for the maps and reduces show nothing useful.  There are a ton of warnings about deprecated and final config values, but the task runs and seems to finish without error.  ...
   Author: Robert Dyer, 2013-10-22, 06:19
Re: Job status shows 0's for counters - Hadoop - [mail # user]
...Thanks all for the JIRA links.  It appears this was 'fixed' in an older JIRA... but looking at the source in my 1.2.1 webapps directory, it definitely is not fixed!  I'll comment o...
   Author: Robert Dyer, 2013-09-03, 21:14
Re: Job cleanup - Hadoop - [mail # user]
...I think the problem is I need to report progress() from my cleanup task. How can I do this?  The commitJob() in my custom org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter[1] o...
   Author: Robert Dyer, 2013-04-17, 08:44
[HADOOP-9386] MapFile.fix does not allow custom index intervals - Hadoop - [issue]
...MapFile.Writer provides a setIndexInterval() method for customizing how frequently an index is written.  By default it is set to 128.The method MapFile.fix() provides the ability to reg...
http://issues.apache.org/jira/browse/HADOOP-9386    Author: Robert Dyer, 2013-03-09, 17:22
Re: Namenode failures - Hadoop - [mail # user]
...On Sun, Feb 17, 2013 at 5:08 PM, Harsh J  wrote:    I don't believe so.  The only files I push to HDFS are SequenceFiles (with protobuf objects in them) and HBase's regio...
   Author: Robert Dyer, 2013-02-17, 23:29
Re: more reduce tasks - Hadoop - [mail # user]
...You could create a CustomOutputCommitter and in the commitJob() method simply read in the part-* files and write them out into a single aggregated file.  This requires making a CustomOu...
   Author: Robert Dyer, 2013-01-04, 05:55
[expand - 1 more] - Re: Strange machine behavior - Hadoop - [mail # user]
...Yes but even with a MR running, it is only 36GB heap total out of 64GB ram.  This leaves plenty for OS and caching.  The problem seems to be the OS preferring to cache over giving ...
   Author: Robert Dyer, 2012-12-09, 02:10
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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