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Posted to issues@spark.apache.org by "Cheng Hao (JIRA)" <ji...@apache.org> on 2014/10/27 02:17:34 UTC
[jira] [Created] (SPARK-4093) Simplify the unwrap/wrap between
HiveUDFs
Cheng Hao created SPARK-4093:
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Summary: Simplify the unwrap/wrap between HiveUDFs
Key: SPARK-4093
URL: https://issues.apache.org/jira/browse/SPARK-4093
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Cheng Hao
Priority: Minor
Currently, the nested Hive UDFs invoking will cause extra overhead in "unwrapping" / "wrapping" data.
e.g.
SELECT cos(sin(a)) FROM t;
We can reuse the ObjectInspector & output result of nested Hive UDF(sin), and avoid the extra data "unwrap" and "wrap".
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