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jsonhadoopapache-pig

pig jsonloader array parse issue

I have a json encoded data below need to be parsed using pig.

{"arr":[1,2,3,4]}

According a document at http://help.mortardata.com/technologies/pig/json#toc_4JsonLoaderSchemaGuidelines , my loading schema is:

a = load 'testJsonPig.log' using JsonLoader('arr:{t:(i:int)}');

and dump it:

dump a;

but I got an unepected result:

()

the result is empty, and I don't know why it happened, It seemed that I met a same question as this link Pig default JsonLoader schema issue described.

My pig version is

Apache Pig version 0.12.1 (r1585011)

and wish someone could help me, thx in advance.

Solution

  • finally I use elephantbird jsonloader to solve my problem.

    https://github.com/kevinweil/elephant-bird/