Github user rdblue commented on a diff in the pull request:
https://github.com/apache/spark/pull/23086#discussion_r236850263
--- Diff: sql/core/src/main/java/org/apache/spark/sql/sources/v2/Table.java
---
@@ -0,0 +1,51 @@
+/*
+ * 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.sources.v2;
+
+import org.apache.spark.annotation.Evolving;
+import org.apache.spark.sql.sources.v2.reader.Scan;
+import org.apache.spark.sql.sources.v2.reader.ScanBuilder;
+import org.apache.spark.sql.types.StructType;
+
+/**
+ * An interface representing a logical structured data set of a data
source. For example, the
+ * implementation can be a directory on the file system, a topic of Kafka,
or a table in the
+ * catalog, etc.
+ *
+ * This interface can mixin the following interfaces to support different
operations:
+ * <ul>
+ * <li>{@link SupportsBatchRead}: this table can be read in batch
queries.</li>
+ * </ul>
+ */
+@Evolving
+public interface Table {
--- End diff --
It would be helpful for a `Table` to also expose a name or identifier of
some kind. The `TableIdentifier` passed into `DataSourceV2Relation` is only
used in `name` to identify the relation's table. If the name (or location for
path-based tables) were supplied by the table instead, it would remove the need
to pass it in the relation.
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