Description
Pattern matching is utilized for each call of Concat.eval, Reverse.nullSafeEval and ElementAt.nullSafeEval and thus for each record of a dataset. This could lead to a performance penalty when expression are executed in the interpreted mode. The goal of this ticket is to reduce usage of pattern matching within the mentioned "eval" methods.
Attachments
Issue Links
- is duplicated by
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SPARK-25470 Eval method of Concat expression should call pattern matching only once
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- Resolved
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- relates to
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SPARK-23736 High-order function: concat(array1, array2, ..., arrayN) → array
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- Resolved
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- links to
