Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16962#discussion_r101653599
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/SaveIntoDataSourceCommand.scala
---
@@ -0,0 +1,52 @@
+/*
+ * 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
+
+import org.apache.spark.sql.{Dataset, Row, SaveMode, SparkSession}
+import org.apache.spark.sql.catalyst.plans.QueryPlan
+import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
+import org.apache.spark.sql.execution.command.RunnableCommand
+
+/**
+ * Saves the results of `query` in to a data source.
+ *
+ * Note that this command is different from
[[InsertIntoDataSourceCommand]]. This command will call
+ * `CreatableRelationProvider.createRelation` to write out the data, while
+ * [[InsertIntoDataSourceCommand]] calls `InsertableRelation.insert`.
Ideally these 2 data source
+ * interfaces should do the same thing, but as we've already published
these 2 interfaces and the
+ * implementations may have different logic, we have to keep these 2
different commands.
+ */
+case class SaveIntoDataSourceCommand(
+ query: LogicalPlan,
+ provider: String,
+ partitionColumns: Seq[String],
+ options: Map[String, String],
+ mode: SaveMode) extends RunnableCommand {
+
+ override protected def innerChildren: Seq[QueryPlan[_]] = Seq(query)
+
+ override def run(sparkSession: SparkSession): Seq[Row] = {
+ DataSource(
+ sparkSession,
+ className = provider,
+ partitionColumns = partitionColumns,
+ options = options).write(mode, Dataset.ofRows(sparkSession, query))
+
--- End diff --
Do we need to Invalidate the cache to be consistent with
`InsertIntoDataSourceCommand`?
```
sparkSession.sharedState.cacheManager.invalidateCache(query)
```
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