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Pig, mail # user - How do I load JSON in Pig?


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Re: How do I load JSON in Pig?
Arian Pasquali 2012-11-19, 00:31
I dont think you really need to build it.
you can find it at any maven repository.

Arian Rodrigo Pasquali
FEUP, SAPO Labs
http://www.arianpasquali.com
twitter @arianpasquali

2012/11/18 Arian Pasquali <[EMAIL PROTECTED]>

> U dont need to build neither
> Just download those two jar I used in my example.
>
> Arian
>
> Em domingo, 18 de novembro de 2012, Russell Jurney escreveu:
>
>> Thanks - looks like I don't have to specify the schema, which is good.
>>
>> I'll try and build elephant-bird.
>>
>> Russell Jurney http://datasyndrome.com
>>
>> On Nov 17, 2012, at 9:30 PM, Arian Pasquali <[EMAIL PROTECTED]>
>> wrote:
>>
>> > keep calm
>> > and use elephant-bird
>> > https://github.com/kevinweil/elephant-bird<
>> https://github.com/kevinweil/elephant-bird/blob/master/pig/src/main/java/com/twitter/elephantbird/pig/load/JsonLoader.java
>> >
>> >
>> > I posted here yesterday an example how to load tweets in json
>> > here goes again. I hope it helps.
>> >
>> >  register 'elephant-bird-core-3.0.0.jar'
>> >    register 'elephant-bird-pig-3.0.0.jar'
>> >    register 'google-collections-1.0.jar'
>> >    register 'json-simple-1.1.jar'
>> >
>> >    json_lines = LOAD
>> > '/twitter_data/tweets/stream/v1/json/2012_10_10/08' USING
>> > com.twitter.elephantbird.pig.load.JsonLoader();
>> >
>> >    geo_tweets = FOREACH json_lines GENERATE (CHARARRAY) $0#'id' AS
>> > id, (CHARARRAY) $0#'geoLocation' AS geoLocation;
>> >
>> >    only_not_nulls = FILTER geo_tweets BY geoLocation is not null;
>> >    store only_not_nulls into '/twitter_data/results/geo_tweets';
>> >
>> >
>> >
>> > Arian Rodrigo Pasquali
>> > FEUP, SAPO Labs
>> > http://www.arianpasquali.com
>> > twitter @arianpasquali
>> >
>> >
>> >
>> > 2012/11/18 Dan Young <[EMAIL PROTECTED]>
>> >
>> >> No sure if this helps, but in 0.11 I've been using this on EMR for
>> some of
>> >> our JSON data....
>> >>
>> >> raw = load 'hdfs:///cleaned_logs/clicks2/$year_id/$month_id/part-*'
>> USING
>> >>
>> >>
>> JsonLoader('a:chararray,at:chararray,c1:(url:chararray,useragent:chararray,referrer:chararray,window:(innerheight:chararray,innerwidth:chararray,outerheight:chararray,outerwidth:chararray),resolution:(height:chararray,width:chararray)),cst:chararray,d:(a:chararray,b:chararray),i:chararray,id:chararray,ip:chararray,k:chararray,l:(lat:chararray,lng:chararray),p:chararray,pv:chararray,sa:chararray,sid:chararray,sst:chararray,t:chararray,uuid:chararray,v:chararray');
>> >>
>> >>
>> >> Regards,
>> >>
>> >> Dano
>> >>
>> >>
>> >>
>> >> On Sat, Nov 17, 2012 at 3:09 PM, Russell Jurney <
>> [EMAIL PROTECTED]
>> >>> wrote:
>> >>
>> >>> I have some JSON data with a uniform schema. I want to load it in Pig.
>> >>> JsonStorage doesn't work, because the data has no schema.
>> >>>
>> >>> How can I load JSON data in Pig?
>> >>>
>> >>> --
>> >>> Russell Jurney twitter.com/rjurney [EMAIL PROTECTED]
>> >>> datasyndrome.com
>> >>>
>> >>
>>
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