RussellSpitzer commented on a change in pull request #2660:
URL: https://github.com/apache/iceberg/pull/2660#discussion_r647515425
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File path: core/src/main/java/org/apache/iceberg/util/SnapshotUtil.java
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@@ -63,6 +63,20 @@ public static boolean ancestorOf(Table table, long
snapshotId, long ancestorSnap
return ancestorIds(table.currentSnapshot(), table::snapshot);
}
+ /**
+ * Find the oldest Snapshot of a table.
+ * @param table the table to find the oldest snapshot on.
+ * @return null if the table is empty, else the oldest Snapshot.
+ */
+ public static Snapshot oldestSnapshot(Table table) {
+ Snapshot current = table.currentSnapshot();
+ while (current.parentId() != null) {
Review comment:
NPE? If currentSnapshot() is null then we would npe here calling parentID
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