viirya commented on a change in pull request #26875: [SPARK-30245][SQL] Add cache for Like and RLike when pattern is not static URL: https://github.com/apache/spark/pull/26875#discussion_r361085053
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala ########## @@ -240,11 +245,16 @@ case class RLike(left: Expression, right: Expression) extends StringRegexExpress } } else { val rightStr = ctx.freshName("rightStr") - val pattern = ctx.freshName("pattern") + val pattern = ctx.addMutableState(patternClass, "pattern") + val lastRightStr = ctx.addMutableState(classOf[String].getName, "lastRightStr") + nullSafeCodeGen(ctx, ev, (eval1, eval2) => { s""" String $rightStr = $eval2.toString(); - $patternClass $pattern = $patternClass.compile($rightStr); + if ($rightStr != $lastRightStr) { Review comment: Do you mean to use `equals()`? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org