[SPARK-7024][SQL] Improve performance of function containsStar. #5602
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Can one of the admins verify this patch? |
Contributor
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Please avoid making no-op changes in non-performance critical parts of the code, unless you have a benchmark that shows its will actually improve performance. We are very limited in the amount of time we have to review code and these kinds of PRs make it difficult for us to keep up with the request rate. |
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The function before will calculate at least
expression.sizetimes.The function after will calculate at least
1times.