Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/7566#discussion_r35290755
--- Diff:
unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java ---
@@ -285,13 +285,13 @@ public UTF8String trimRight() {
}
public UTF8String reverse() {
- byte[] bytes = getBytes();
--- End diff --
This is the follow up for #6762, we'd better use the `copyMemory` instead
of the `System.arrayCopy`, the later probably required additional `byte[]`
created before the real copying.
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