Thomas Rebele created HIVE-29514:
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Summary: Optimize UDFUnhex
Key: HIVE-29514
URL: https://issues.apache.org/jira/browse/HIVE-29514
Project: Hive
Issue Type: Task
Reporter: Thomas Rebele
The performance of UDFUnhex could be improved:
* avoid adding a "0" as prefix
* operate on the Text bytes directly instead of converting it to a string
* avoid Integer.parseInt, to avoid the need to catch a NumberFormatException
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