Herman van Hovell b0768538e5 [SPARK-14321][SQL] Reduce date format cost and string-to-date cost in date functions ... ## What changes were proposed in this pull request? The current implementations of `UnixTime` and `FromUnixTime` do not cache their parser/formatter as much as they could. This PR resolved this issue. This PR is a take over from https://github.com/apache/spark/pull/13522 and further optimizes the re-use of the parser/formatter. It also fixes the improves handling (catching the actual exception instead of `Throwable`). All credits for this work should go to rajeshbalamohan. This PR closes https://github.com/apache/spark/pull/13522 ## How was this patch tested? Current tests. Author: Herman van Hovell <hvanhovell@databricks.com> Author: Rajesh Balamohan <rbalamohan@apache.org> Closes #13581 from hvanhovell/SPARK-14321.		2016-06-09 16:37:18 -07:00
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src	[SPARK-14321][SQL] Reduce date format cost and string-to-date cost in date functions	2016-06-09 16:37:18 -07:00
pom.xml	[SPARK-15290][BUILD] Move annotations, like @Since / @DeveloperApi, into spark-tags	2016-05-17 09:55:53 +01:00