Github user janewangfb commented on a diff in the pull request: https://github.com/apache/spark/pull/18975#discussion_r136681131 --- Diff: sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/InsertIntoHiveDirCommand.scala --- @@ -0,0 +1,134 @@ +/* + * 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.hive.execution + +import java.util.Properties + +import scala.language.existentials + +import org.apache.hadoop.fs.{FileSystem, Path} +import org.apache.hadoop.hive.common.FileUtils +import org.apache.hadoop.hive.ql.plan.TableDesc +import org.apache.hadoop.hive.serde.serdeConstants +import org.apache.hadoop.hive.serde2.`lazy`.LazySimpleSerDe +import org.apache.hadoop.mapred._ + +import org.apache.spark.sql.{Row, SparkSession} +import org.apache.spark.sql.catalyst.catalog.CatalogStorageFormat +import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan +import org.apache.spark.sql.execution.SparkPlan +import org.apache.spark.util.Utils + +/** + * Command for writing the results of `query` to file system. + * + * The syntax of using this command in SQL is: + * {{{ + * INSERT OVERWRITE [LOCAL] DIRECTORY + * path + * [ROW FORMAT row_format] + * [STORED AS file_format] + * SELECT ... + * }}} + * + * @param isLocal whether the path specified in `storage` is a local directory + * @param storage storage format used to describe how the query result is stored. + * @param query the logical plan representing data to write to + * @param overwrite whthere overwrites existing directory + */ +case class InsertIntoHiveDirCommand( + isLocal: Boolean, + storage: CatalogStorageFormat, + query: LogicalPlan, + overwrite: Boolean) extends SaveAsHiveFile { + + override def children: Seq[LogicalPlan] = query :: Nil + + override def run(sparkSession: SparkSession, children: Seq[SparkPlan]): Seq[Row] = { + assert(children.length == 1) + assert(storage.locationUri.nonEmpty) + + val Array(cols, types) = children.head.output.foldLeft(Array("", "")) { case (r, a) => + r(0) = r(0) + a.name + "," + r(1) = r(1) + a.dataType.catalogString + ":" + r + } + + val properties = new Properties() + properties.put("columns", cols.dropRight(1)) + properties.put("columns.types", types.dropRight(1)) + + val sqlContext = sparkSession.sqlContext + + properties.put(serdeConstants.SERIALIZATION_LIB, + storage.serde.getOrElse(classOf[LazySimpleSerDe].getName)) + + import scala.collection.JavaConverters._ + properties.putAll(storage.properties.asJava) + + var tableDesc = new TableDesc( --- End diff -- updated
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