impala-get-json-object-udf

A UDF for Cloudera Impala ( hive get_json_object equivalent )

build

• cmake .
• make

install

• upload build/jsonUdf.ll to [hdfs path]/jsonUdf.ll
• impala-shell> create function [database.]json_get_object (string, string) returns string location '[hdfs path]/jsonUdf.ll' symbol='JsonGetObject';

usage

• impala-shell> select json_get_object('{"name":"steven"}', '$.name');
• --> returns a string steven