adelapena commented on code in PR #2673:
URL: https://github.com/apache/cassandra/pull/2673#discussion_r1370489241
##########
src/java/org/apache/cassandra/index/sai/disk/PrimaryKeyMap.java:
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@@ -70,6 +71,22 @@ default void close()
*/
long rowIdFromPrimaryKey(PrimaryKey key);
+ /**
+ * Returns the first row ID for a given token or a negative value if not
found
+ *
+ * @param token the {@link Token} to lookup
+ * @return the first row ID associated with the {@link Token} or a
negative value
+ */
+ long ceiling(Token token);
+
+ /**
+ * Returns the last row ID for a given partition range or the previous row
ID if there was no match for the partition range
Review Comment:
Yes, I think the original code uses something `the row ID of the least PK
greater than or equal to the given PK` for ceiling, and `the row ID of the
greatest PK less than or equal to the given PK` for floor, which sounds
clearer.
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