api/src/main/java/org/apache/gravitino/rel/TableCatalog.java [248:299]:
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  Table createTable(
      NameIdentifier ident,
      Column[] columns,
      String comment,
      Map<String, String> properties,
      Transform[] partitions,
      Distribution distribution,
      SortOrder[] sortOrders,
      Index[] indexes)
      throws NoSuchSchemaException, TableAlreadyExistsException;

  /**
   * Apply the {@link TableChange change} to a table in the catalog.
   *
   * <p>Implementations may reject the change. If any change is rejected, no changes should be
   * applied to the table.
   *
   * @param ident A table identifier.
   * @param changes Table changes to apply to the table.
   * @return The updated table metadata.
   * @throws NoSuchTableException If the table does not exist.
   * @throws IllegalArgumentException If the change is rejected by the implementation.
   */
  Table alterTable(NameIdentifier ident, TableChange... changes)
      throws NoSuchTableException, IllegalArgumentException;

  /**
   * Removes both the metadata and the directory associated with the table from the file system if
   * the table is not an external table. In case of an external table, only the associated metadata
   * is removed.
   *
   * @param ident A table identifier.
   * @return True if the table is dropped, false if the table does not exist.
   */
  boolean dropTable(NameIdentifier ident);

  /**
   * Drop a table from the catalog and completely remove its data. Removes both the metadata and the
   * directory associated with the table completely and skipping trash. If the table is an external
   * table or the catalogs don't support purge table, {@link UnsupportedOperationException} is
   * thrown.
   *
   * <p>If the catalog supports to purge a table, this method should be overridden. The default
   * implementation throws an {@link UnsupportedOperationException}.
   *
   * @param ident A table identifier.
   * @return True if the table is purged, false if the table does not exist.
   * @throws UnsupportedOperationException If the catalog does not support to purge a table.
   */
  default boolean purgeTable(NameIdentifier ident) throws UnsupportedOperationException {
    throw new UnsupportedOperationException("purgeTable not supported.");
  }
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catalogs/catalog-lakehouse-hudi/src/main/java/org/apache/gravitino/catalog/lakehouse/hudi/ops/HudiCatalogBackendOps.java [78:96]:
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  Table createTable(
      NameIdentifier ident,
      Column[] columns,
      String comment,
      Map<String, String> properties,
      Transform[] partitions,
      Distribution distribution,
      SortOrder[] sortOrders,
      Index[] indexes)
      throws NoSuchSchemaException, TableAlreadyExistsException;

  Table alterTable(NameIdentifier ident, TableChange... changes)
      throws NoSuchTableException, IllegalArgumentException;

  boolean dropTable(NameIdentifier ident);

  default boolean purgeTable(NameIdentifier ident) throws UnsupportedOperationException {
    throw new UnsupportedOperationException("purgeTable not supported.");
  }
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