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[expand - 4 more] - Re: Delete a folder name containing * - Hadoop - [mail # user]
...Command used -1. hadoop fs -rmr /data/folder\*2. hadoop fs -rmr 'data/folder\*'3. hadoop fs -rmr "/data/folder\*"None of them gave any output. Hadoop version - 1.0.2On Wed, Aug 20, 2014 at 7...
   Author: praveenesh kumar, 2014-08-20, 20:07
Re: Json Parsing in Apache Pig - Pig - [mail # user]
...One simple way is to write a UDF that will act as Json parser. Load yourdata and then call your UDF to parse and extract whatever you want from theJson. You need to build what you want to ge...
   Author: praveenesh kumar, 2014-07-25, 12:02
[expand - 3 more] - Re: HDFS multi-tenancy and federation - Hadoop - [mail # user]
...Federation is just a namenode namespace management capability. It isdesigned to control namenode management and to provide scalability fornamenode. I don't think it poses any security or res...
   Author: praveenesh kumar, 2014-07-15, 10:06
Re: Hadoop Takes 6GB Memory to run one mapper - Hadoop - [mail # user]
...Can you try storing your file as bytes instead of String. I can't think ofany reason why this would require 6 GB heap space.Can you explain your use-case that might help some alternatives if...
   Author: praveenesh kumar, 2014-03-25, 13:38
[expand - 2 more] - Re: Filters failing to compare negative numbers (int,float,double or long) - HBase - [mail # user]
...Orderly API has examples in it. Just download the API, understand theexamples.. create your own keys (including negative keys). Create thesimilar scenario, it shouldn't be that hard.On Tue, ...
   Author: praveenesh kumar, 2014-03-25, 12:46
[expand - 1 more] - Re: I am about to lose all my data please help - Hadoop - [mail # user]
...Can you also make sure your hostname and IP address are still mappedcorrectly. Because what I am guessing is when you restart your machine,your /etc/hosts entries might get restored (it happ...
   Author: praveenesh kumar, 2014-03-24, 13:52
STRSPLIT should return a bag rather than a tuple - Pig - [mail # dev]
...Hi there,I had a scenario, which required me to change the STRSPLIT code. Thescenario was as follows:I have a data like:1       A|1|1   some2       B|2|2 &...
   Author: praveenesh kumar, 2014-03-21, 16:52
Re: Doubt - Hadoop - [mail # user]
...Why not ? Its just a matter of installing 2 different packages.Depends on what do you want to use it for, you need to take care of fewthings, but as far as installation is concerned, it shou...
   Author: praveenesh kumar, 2014-03-19, 15:51
Re: How should I insert EMPTY values into pig - Pig - [mail # user]
...I am just curious why would you want to do that. Because you can use thenulls from pig in the same way as empty values. At the end, if you outputthem back, you won't get null values, you wou...
   Author: praveenesh kumar, 2014-02-27, 14:28
[expand - 1 more] - Re: A question about Balancer in HDFS - Hadoop - [mail # user]
...Cool, thanks for sharing this info. CheersRegardsPravOn Fri, Feb 21, 2014 at 6:53 AM, QShu  wrote: ...
   Author: praveenesh kumar, 2014-02-21, 14:56
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