Github user andrewor14 commented on a diff in the pull request: https://github.com/apache/spark/pull/13186#discussion_r64265938 --- Diff: common/unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java --- @@ -543,6 +543,9 @@ public UTF8String repeat(int times) { * @return the position of the first occurrence of substr, if not found, -1 returned. */ public int indexOf(UTF8String v, int start) { + if (start < 0) { + return -1; --- End diff -- if we're trying to follow Hive behavior for locate then we should move this logic to `StringLocate` instead
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