rdblue commented on a change in pull request #2660:
URL: https://github.com/apache/iceberg/pull/2660#discussion_r655772747
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File path: core/src/main/java/org/apache/iceberg/util/SnapshotUtil.java
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@@ -107,4 +121,26 @@ public static boolean ancestorOf(Table table, long
snapshotId, long ancestorSnap
return newFiles;
}
+
+ /**
+ * Traverses the history of the table's current snapshot and finds the
snapshot with the given snapshot id as its
+ * parent.
+ * @return null if the passed in snapshot is not present in the table, else
the snapshot for which the given snapshot
+ * is the parent
+ * @throws IllegalArgumentException when the given SnapshotId is not found
in the table
+ * @throws IllegalStateException when the given snapshot ID is not an
ancestor of the current table state
+ */
+ public static Snapshot snapshotAfter(Table table, long snapshotId) {
+ Snapshot previousSnapshot = table.snapshot(snapshotId);
+ Preconditions.checkArgument(previousSnapshot != null,
+ "Invalid snapshotId: %s, snapshot not found in the table.",
snapshotId);
Review comment:
The ID isn't invalid, the problem is that the snapshot is not present. I
think it should be `"Cannot find parent snapshot: %s"`
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