emkornfield commented on code in PR #3243:
URL: https://github.com/apache/parquet-java/pull/3243#discussion_r2145643450
##########
parquet-column/src/main/java/org/apache/parquet/schema/PrimitiveComparator.java:
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@@ -206,6 +206,31 @@ public String toString() {
}
};
+ /*
+ * This comparator is for comparing two timestamps represented as int96
binary.
+ */
+ static final PrimitiveComparator<Binary> BINARY_AS_INT_96_COMPARATOR = new
BinaryComparator() {
+ @Override
+ int compareBinary(Binary b1, Binary b2) {
+ ByteBuffer bb1 = b1.toByteBuffer();
+ ByteBuffer bb2 = b2.toByteBuffer();
+ bb1.order(java.nio.ByteOrder.LITTLE_ENDIAN);
+ bb2.order(java.nio.ByteOrder.LITTLE_ENDIAN);
+ int jd1 = bb1.getInt(8);
+ int jd2 = bb2.getInt(8);
+ if (jd1 != jd2) return Integer.compareUnsigned(jd1, jd2) < 0 ? -1 : 1;
Review Comment:
Never mind, I think this is actually counting from something pre-year 1.
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