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Mapred.system.dir: should JT start without it? - Hadoop - [mail # user]
...Is there a startup for contract mapreduce making its own mapred.system.dir  ?   Also, it seems that the jobtracker can startup even if this directory was not created / doesn't exis...
   Author: Jay Vyas, 2013-08-15, 13:24
Staging directory ENOTDIR error. - Hadoop - [mail # user]
...Hi , I'm getting an ungoogleable exception, never seen this before.  This is on a hadoop 1.1. cluster... It appears that its permissions related... Any thoughts as to how this could cro...
   Author: Jay Vyas, 2013-07-11, 22:41
[expand - 1 more] - Re: JobSubmissionFiles: past , present, and future? - Hadoop - [mail # user]
...To update on this, it was just pointed out to me by matt farrallee  that the auto fix of permissions is for a failsafe  in case of a race condition, and not meant to mend bad permi...
   Author: Jay Vyas, 2013-04-12, 12:21
[expand - 1 more] - Re: Copy Vs DistCP - Hadoop - [mail # user]
...DistCP is a full blown mapreduce job (mapper only, where the mappers do a "fully" parallel copy to the detsination).  CP appears (correct me if im wrong) to simply invoke the FileSystem...
   Author: Jay Vyas, 2013-04-10, 23:51
Re: No bulid.xml when to build FUSE - Hadoop - [mail # user]
...hadoop-hdfs builds with maven, not ant.  You might also need to install the serialization libraries.  See http://wiki.apache.org/hadoop/HowToContribute .  As an aside, you cou...
   Author: Jay Vyas, 2013-04-10, 14:28
[expand - 1 more] - Re: MVN repository for hadoop trunk - Hadoop - [mail # user]
...Hi guys Hope this helps someone:  I put in a pull request for adding the hadoop snapshot dependencies into a pom file.  Its pretty simple - just add the repository XML block in the...
   Author: Jay Vyas, 2013-04-06, 22:11
Re: How do _you_ document your hadoop jobs? - Hadoop - [mail # user]
...Wow that's very heavy weight and difficult to modify. Why not graphviz or generating the diagrams from some Or text format.?    On Feb 25, 2013, at 4:11 AM, "David Parks"  wro...
   Author: Jay Vyas, 2013-02-25, 14:55
[expand - 1 more] - Re: core-site.xml file is being ignored by new Configuration() - Hadoop - [mail # user]
...Good catch with that string.length() - you're right, that was a silly mistake. --- sorry - im not sure what i was thinking. it was a late night  In any case, the same code with file.exi...
   Author: Jay Vyas, 2013-01-17, 15:00
Re: Configuration object not loading parameters in unit tests - Hadoop - [mail # user]
...Is there a way to have the Configuration report wether or not it was able / unable to find the default configuration resources? It looks at the moment that it simply prints out all the resou...
   Author: Jay Vyas, 2013-01-16, 19:49
Re: FileSystem.workingDir vs mapred.local.dir - Hadoop - [mail # user]
...what do you mean by "workingdir for a filesystem" ?  I never thought that a fileSystem should need or have a special workingDir ?   On Tue, Jan 15, 2013 at 12:43 PM, Hemanth Yamija...
   Author: Jay Vyas, 2013-01-15, 18:47
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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