Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/19180#discussion_r138454402
--- Diff:
common/unsafe/src/main/java/org/apache/spark/unsafe/types/UTF8String.java ---
@@ -1097,8 +1101,21 @@ public UTF8String copy() {
@Override
public int compareTo(@Nonnull final UTF8String other) {
int len = Math.min(numBytes, other.numBytes);
- // TODO: compare 8 bytes as unsigned long
- for (int i = 0; i < len; i ++) {
+ int words = len / Longs.BYTES;
+ long roffset = other.getBaseOffset();
+ Object rbase = other.getBaseObject();
+ for (int i = 0; i < words * Longs.BYTES; i += Longs.BYTES) {
--- End diff --
I don't object to `Longs.BYTES` so much, but it's not used elsewhere. I
think just writing "8" is clear and consistent.
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