Improve efficiency of get_json_object
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Key: HIVE-1191
URL: https://issues.apache.org/jira/browse/HIVE-1191
Project: Hadoop Hive
Issue Type: Improvement
Reporter: Zheng Shao
See http://wiki.apache.org/hadoop/Hive/LanguageManual/UDF#get_json_object
The current implementation of get_json_object uses a third-party library to
parse json_object and then get the result.
It's much slower than just using simple UTF-8 byte array based parsing.
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