nssalian commented on code in PR #17726:
URL: https://github.com/apache/iceberg/pull/17726#discussion_r3938109443
##########
api/src/main/java/org/apache/iceberg/variants/VariantUtil.java:
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@@ -99,13 +100,13 @@ static String readString(ByteBuffer buffer, int offset,
int length) {
}
}
- static <T extends Comparable<T>> int find(int size, T key, Function<Integer,
T> resolve) {
+ static int find(int size, String key, Function<Integer, String> resolve) {
int low = 0;
int high = size - 1;
while (low <= high) {
int mid = (low + high) >>> 1;
- T value = resolve.apply(mid);
- int cmp = key.compareTo(value);
+ String value = resolve.apply(mid);
+ int cmp = Comparators.charSequences().compare(key, value);
Review Comment:
Making it deliberate: accept and document, no fallback. The divergence is
confined to field names with supplementary code points (> U+FFFF), which I want
to say are effectively nonexistent in Variant field names, and find returns
only on exact match so the worst case is a false "not found," never a wrong
value. I prototyped a linear-scan fallback but it adds a second lookup path for
a case no one is expected to hit, so I'd rather not introduce it now.
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