[SPARK-14267] [SQL] [PYSPARK] execute multiple Python UDFs within single batch#12057

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davies wants to merge 7 commits intoapache:masterfrom davies:multi_udfs

+233-101

Commits on Mar 30, 2016

multiple Python UDFs in single batch
Davies Liu
committed
fast path for single UDF
Davies Liu
committed

Commits on Mar 31, 2016

improve performance, address comments
Davies Liu
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be safe
Davies Liu
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fix udt with udf
Davies Liu
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avoid unnecessary conversion
Davies Liu
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udpate error message
Davies Liu
committed