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https://issues.apache.org/jira/browse/HIVE-914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Yang updated HIVE-914:
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Attachment: HIVE-914.1.patch
* Added an LRU cache for JSONObjects
* Reduced new object creation in extract_json_withindex()
> Speed up UDFJson
> ----------------
>
> Key: HIVE-914
> URL: https://issues.apache.org/jira/browse/HIVE-914
> Project: Hadoop Hive
> Issue Type: Improvement
> Reporter: Paul Yang
> Assignee: Paul Yang
> Attachments: HIVE-914.1.patch
>
>
> In UDFJson, a new JSONObject is created for each call to evaluate(). Since it
> is likely that evalue() will be called with multiple paths for a given JSON
> string, a performance improvement can be realized by caching the JSONObject
> created from a JSON string.
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