stevenzwu commented on code in PR #5984:
URL: https://github.com/apache/iceberg/pull/5984#discussion_r1008784212
##########
api/src/main/java/org/apache/iceberg/IncrementalScan.java:
##########
@@ -21,6 +21,23 @@
/** API for configuring an incremental scan. */
public interface IncrementalScan<ThisT, T extends ScanTask, G extends
ScanTaskGroup<T>>
extends Scan<ThisT, T, G> {
+
+ /**
+ * Instructs this scan to look for changes starting from a particular
snapshot (inclusive).
+ *
+ * <p>If the start snapshot is not configured, it is defaulted to the oldest
ancestor of the end
+ * snapshot (inclusive).
+ *
+ * @param fromSnapshotId the start snapshot ID (inclusive)
+ * @param referenceName the ref used
+ * @return this for method chaining
+ * @throws IllegalArgumentException if the start snapshot is not an ancestor
of the end snapshot
+ */
+ default ThisT fromSnapshotInclusive(long fromSnapshotId, String
referenceName) {
Review Comment:
Follow along @nastra 's suggestion, we can have overload methods via
argument type (id vs reference). Id (long) or reference (string) are just
different ways to specify the snapshot. it is good that current methods are
called `fromSnapshot`. reference can be branch or tag like @nastra suggested.
```
ThisT fromSnapshotInclusive(long fromSnapshotId);
ThisT fromSnapshotInclusive(String fromSnapshotRef);
```
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