dramaticlly commented on code in PR #11597:
URL: https://github.com/apache/iceberg/pull/11597#discussion_r1866408953


##########
hive-metastore/src/main/java/org/apache/iceberg/hive/HiveCatalog.java:
##########
@@ -412,6 +412,28 @@ private void validateTableIsIcebergTableOrView(
     }
   }
 
+  @Override
+  public boolean tableExists(TableIdentifier identifier) {
+    if (!isValidIdentifier(identifier)) {
+      return false;
+    }
+
+    String database = identifier.namespace().level(0);
+    try {
+      Table table = clients.run(client -> client.getTable(database, 
identifier.name()));
+      HiveOperationsBase.validateTableIsIceberg(table, fullTableName(name, 
identifier));

Review Comment:
   Good callout, the `validateTableIsIceberg` will throw 
[`NoSuchIcebergTableException`](https://github.com/apache/iceberg/blob/main/api/src/main/java/org/apache/iceberg/exceptions/NoSuchIcebergTableException.java#L24)
 which is subclass of `NoSuchTableException` and will be caught in line 433 
below and return false. I also added explicit test to cover this!



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