Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/7709#discussion_r36154563
--- Diff:
unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java ---
@@ -741,6 +742,21 @@ public static UTF8String concatWs(UTF8String
separator, UTF8String... inputs) {
return res;
}
+ // TODO: Need to use `Code Point` here instead of Char in case the
character longer than 2 bytes
--- End diff --
If all the characters are less than 127, then we could use Map[Byte][Byte](
even Array[byte][128]), otherwise use Map[Int][Int]
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