spark WriteToMicroBatchDataSourceV1 源码
spark WriteToMicroBatchDataSourceV1 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/sources/WriteToMicroBatchDataSourceV1.scala
/*
* 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.streaming.sources
import org.apache.spark.sql.catalyst.catalog.CatalogTable
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, UnaryNode}
import org.apache.spark.sql.execution.streaming.Sink
import org.apache.spark.sql.streaming.OutputMode
/**
* Marker node to represent a DSv1 sink on streaming query.
*
* Despite this is expected to be the top node, this node should behave like "pass-through"
* since the DSv1 codepath on microbatch execution handles sink operation separately.
*
* This node is eliminated in streaming specific optimization phase, which means there is no
* matching physical node.
*/
case class WriteToMicroBatchDataSourceV1(
catalogTable: Option[CatalogTable],
sink: Sink,
query: LogicalPlan,
queryId: String,
writeOptions: Map[String, String],
outputMode: OutputMode,
batchId: Option[Long] = None)
extends UnaryNode {
override def child: LogicalPlan = query
override def output: Seq[Attribute] = query.output
def withNewBatchId(batchId: Long): WriteToMicroBatchDataSourceV1 = {
copy(batchId = Some(batchId))
}
override protected def withNewChildInternal(
newChild: LogicalPlan): WriteToMicroBatchDataSourceV1 = copy(query = newChild)
}
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