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Pig >> mail # user >> How do I load JSON in Pig?


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Russell Jurney 2012-11-17, 22:09
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Dan Young 2012-11-18, 01:23
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Arian Pasquali 2012-11-18, 02:30
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Russell Jurney 2012-11-18, 04:32
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Russell Jurney 2012-11-18, 17:19
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Arian Pasquali 2012-11-18, 22:46
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Arian Pasquali 2012-11-19, 00:31
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Russell Jurney 2012-11-19, 16:23
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Russell Jurney 2012-11-19, 19:27
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Russell Jurney 2012-11-19, 19:30
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Russell Jurney 2012-11-19, 19:33
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Re: How do I load JSON in Pig?
Ok, its even worse. My data is a big array.

Am I being negative in saying that JSON and Pig is like a nightmare?
On Mon, Nov 19, 2012 at 2:33 PM, Russell Jurney <[EMAIL PROTECTED]>wrote:

> Wait... com.twitter.elephantbird.pig.load.JsonLoader() does not infer the
> schema from a record. This is what I was looking for. Looks like I have to
> write that myself.
>
> And yes, I understand the tradeoffs in doing so. Assuming a sample is the
> overall schema is a big assumption.
>
>
>
> On Mon, Nov 19, 2012 at 2:30 PM, Russell Jurney <[EMAIL PROTECTED]>wrote:
>
>> Talking to myself... never mind, guava and json-simple are included with
>> Pig.
>>
>>
>> On Mon, Nov 19, 2012 at 2:27 PM, Russell Jurney <[EMAIL PROTECTED]
>> > wrote:
>>
>>> Got it building. Are google collections and json-simple external deps?
>>>
>>>
>>> On Mon, Nov 19, 2012 at 11:23 AM, Russell Jurney <
>>> [EMAIL PROTECTED]> wrote:
>>>
>>>> It seems that everyone can build elephant-bird but me:
>>>> https://github.com/kevinweil/elephant-bird/issues/272
>>>>
>>>>
>>>> On Sun, Nov 18, 2012 at 7:31 PM, Arian Pasquali <
>>>> [EMAIL PROTECTED]> wrote:
>>>>
>>>>> 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');

Russell Jurney twitter.com/rjurney [EMAIL PROTECTED] datasyndrome.com
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Deepak Tiwari 2012-11-19, 20:22
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Saxifrage Cucvara 2012-11-21, 05:56
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David LaBarbera 2012-11-21, 14:25
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Saxifrage Cucvara 2012-11-21, 22:36
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Adam Kawa 2012-11-17, 23:40
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Russell Jurney 2012-11-18, 22:46