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Re: way to add custom udf jar in hadoop 2.x version - Hadoop - [mail # user]
...I found that the easiest way is to put udf  jar to /usr/lib/hadoop-mapredon all computers in the cluster. Hive cli, hiveserver2, oozie launcher,oozie hive action, mr will see the jar th...
   Author: Alexander Pivovarov, 2014-12-31, 08:54
Re: Hardware requirements for simple node hadoop cluster - Hadoop - [mail # user]
...for balanced conf you need (per core)1-1.5  2 GB 7200 SATA hdd for hdfs  (in JBOD mode, not RAID)3-4 GB RAM ECCreserve  4GB RAM for OSbetter to use separate hdd or usb stick f...
   Author: Alexander Pivovarov, 2014-12-07, 09:57
[expand - 2 more] - Re: High Availability hadoop cluster. - Hadoop - [mail # user]
...For 17 box cluster it's probably good to run 5 ZKs and 5 JNsSo, run 2 ZKs on 2 NNs3 ZKs on 3 DNssame for JNsyou can start additional ZKs and JNs after you are done with initialEnabling HA in...
   Author: Alexander Pivovarov, 2014-11-06, 17:40
Re: problems with Hadoop instalation - Hadoop - [mail # user]
...Are RHEL7 based OSs supported?On Wed, Oct 29, 2014 at 3:59 PM, David Novogrodsky <[EMAIL PROTECTED]> wrote: ...
   Author: Alexander Pivovarov, 2014-10-29, 23:07
Re: how to copy data between two hdfs cluster fastly? - Hadoop - [mail # user]
...try to run on dest cluster datanode$ hadoop fs -cp hdfs://from_cluster/....    hdfs://to_cluster/....On Fri, Oct 17, 2014 at 11:26 AM, Shivram Mani  wrote: ...
   Author: Alexander Pivovarov, 2014-10-17, 18:51
[expand - 1 more] - Re: Spark vs Tez - Hadoop - [mail # user]
...It's going to be spark engine for hive (in addition to mr and tez).Spark API is available for Java and Python as well.Tez engine is available now and it's quite stable. As for speed.  F...
   Author: Alexander Pivovarov, 2014-10-17, 18:25
Re: No space when running a hadoop job - Hadoop - [mail # user]
...It can read/write in parallel to all drives. More hdd more io speed. On Sep 27, 2014 7:28 AM, "Susheel Kumar Gadalay" wrote: ...
   Author: Alexander Pivovarov, 2014-09-27, 17:12
Re: Tez and MapReduce - Hadoop - [mail # user]
...e.g. in hive to switch enginesset hive.execution.engine=mr;orset hive.execution.engine=tez;tez is faster especially on complex queries.On Aug 31, 2014 10:33 PM, "Adaryl "Bob" Wakefield, MBA"...
   Author: Alexander Pivovarov, 2014-09-01, 16:44
[expand - 1 more] - Re: How to serialize very large object in Hadoop Writable? - Hadoop - [mail # user]
...Usually Hadoop Map Reduce deals with row based data.ReduceContextif you need to write a lot to hdfs file you can get OutputStream to hdfsfile and write bytes.On Fri, Aug 22, 2014 at 3:30 PM,...
   Author: Alexander Pivovarov, 2014-08-22, 23:01
Re: Setting Up First Hadoop / Yarn Cluster - Hadoop - [mail # user]
...Probably permission issue.On Thu, Jul 31, 2014 at 11:32 AM, Houston King wrote: ...
   Author: Alexander Pivovarov, 2014-07-31, 21:40
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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