Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/23086#discussion_r234650248
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2StreamingScanExec.scala
---
@@ -0,0 +1,120 @@
+/*
+ * 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.execution.datasources.v2
+
+import org.apache.spark.rdd.RDD
+import org.apache.spark.sql.catalyst.InternalRow
+import org.apache.spark.sql.catalyst.expressions._
+import org.apache.spark.sql.catalyst.plans.physical
+import org.apache.spark.sql.catalyst.plans.physical.SinglePartition
+import org.apache.spark.sql.execution.{ColumnarBatchScan, LeafExecNode,
WholeStageCodegenExec}
+import org.apache.spark.sql.execution.streaming.continuous._
+import org.apache.spark.sql.sources.v2.DataSourceV2
+import org.apache.spark.sql.sources.v2.reader._
+import
org.apache.spark.sql.sources.v2.reader.streaming.{ContinuousPartitionReaderFactory,
ContinuousReadSupport, MicroBatchReadSupport}
+
+/**
+ * Physical plan node for scanning data from a data source.
+ */
+// TODO: micro-batch should be handled by `DataSourceV2ScanExec`, after we
finish the API refactor
+// completely.
+case class DataSourceV2StreamingScanExec(
--- End diff --
I have to use two physical nodes, since batch and streaming have different
APIs now.
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