zhengzengprc commented on a change in pull request #3039:
URL: https://github.com/apache/iceberg/pull/3039#discussion_r701700008



##########
File path: core/src/main/java/org/apache/iceberg/util/SnapshotUtil.java
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@@ -65,12 +65,16 @@ public static boolean ancestorOf(Table table, long 
snapshotId, long ancestorSnap
   }
 
   /**
-   * Traverses the history of the table's current snapshot and finds the 
oldest Snapshot.
-   * @return null if there is no current snapshot in the table, else the 
oldest Snapshot.
+   * Traverses the history of the table's current snapshot and finds the 
oldest Snapshot after the timestamp.
+   * @return null if there is no current snapshot in the table, else the 
oldest Snapshot after the timestamp.

Review comment:
       Confirm from Sreeram that we should NOT use strictly greater than in the 
logic, so the next iteration include the equal case. Thanks for the comment 
@kbendick 




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