Github user rdblue commented on a diff in the pull request:
https://github.com/apache/spark/pull/21306#discussion_r237974410
--- Diff:
sql/catalyst/src/main/java/org/apache/spark/sql/catalog/v2/Table.java ---
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.catalog.v2;
+
+import org.apache.spark.sql.types.StructType;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Represents table metadata from a {@link TableCatalog} or other table
sources.
--- End diff --
No, this interface carries minimal set of operations needed to implement
the v2 logical plans. We can expand it later when we need to.
The goal here is to build a replacement catalog API incrementally and to
avoid requiring all catalogs to implement all possible catalog features. This
API is focused on table operations, not view or function operations that we
have yet to define.
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