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/*
* 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.command
import java.util.NoSuchElementException
import org.apache.spark.internal.Logging
import org.apache.spark.sql.{Row, SparkSession}
import org.apache.spark.sql.catalyst.expressions.Attribute
import org.apache.spark.sql.internal.SQLConf
import org.apache.spark.sql.types.{StringType, StructField, StructType}
/**
* Command that runs
* {{{
* set key = value;
* set -v;
* set;
* }}}
*/
case class SetCommand(kv: Option[(String, Option[String])]) extends RunnableCommand with Logging {
private def keyValueOutput: Seq[Attribute] = {
val schema = StructType(
StructField("key", StringType, nullable = false) ::
StructField("value", StringType, nullable = false) :: Nil)
schema.toAttributes
}
private val (_output, runFunc): (Seq[Attribute], SparkSession => Seq[Row]) = kv match {
// Configures the deprecated "mapred.reduce.tasks" property.
case Some((SQLConf.Deprecated.MAPRED_REDUCE_TASKS, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.MAPRED_REDUCE_TASKS} is deprecated, " +
s"automatically converted to ${SQLConf.SHUFFLE_PARTITIONS.key} instead.")
if (value.toInt < 1) {
val msg =
s"Setting negative ${SQLConf.Deprecated.MAPRED_REDUCE_TASKS} for automatically " +
"determining the number of reducers is not supported."
throw new IllegalArgumentException(msg)
} else {
sparkSession.setConf(SQLConf.SHUFFLE_PARTITIONS.key, value)
Seq(Row(SQLConf.SHUFFLE_PARTITIONS.key, value))
}
}
(keyValueOutput, runFunc)
case Some((SQLConf.Deprecated.EXTERNAL_SORT, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.EXTERNAL_SORT} is deprecated and will be ignored. " +
s"External sort will continue to be used.")
Seq(Row(SQLConf.Deprecated.EXTERNAL_SORT, "true"))
}
(keyValueOutput, runFunc)
case Some((SQLConf.Deprecated.USE_SQL_AGGREGATE2, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.USE_SQL_AGGREGATE2} is deprecated and " +
s"will be ignored. ${SQLConf.Deprecated.USE_SQL_AGGREGATE2} will " +
s"continue to be true.")
Seq(Row(SQLConf.Deprecated.USE_SQL_AGGREGATE2, "true"))
}
(keyValueOutput, runFunc)
case Some((SQLConf.Deprecated.TUNGSTEN_ENABLED, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.TUNGSTEN_ENABLED} is deprecated and " +
s"will be ignored. Tungsten will continue to be used.")
Seq(Row(SQLConf.Deprecated.TUNGSTEN_ENABLED, "true"))
}
(keyValueOutput, runFunc)
case Some((SQLConf.Deprecated.CODEGEN_ENABLED, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.CODEGEN_ENABLED} is deprecated and " +
s"will be ignored. Codegen will continue to be used.")
Seq(Row(SQLConf.Deprecated.CODEGEN_ENABLED, "true"))
}
(keyValueOutput, runFunc)
case Some((SQLConf.Deprecated.UNSAFE_ENABLED, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.UNSAFE_ENABLED} is deprecated and " +
s"will be ignored. Unsafe mode will continue to be used.")
Seq(Row(SQLConf.Deprecated.UNSAFE_ENABLED, "true"))
}
(keyValueOutput, runFunc)
case Some((SQLConf.Deprecated.SORTMERGE_JOIN, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.SORTMERGE_JOIN} is deprecated and " +
s"will be ignored. Sort merge join will continue to be used.")
Seq(Row(SQLConf.Deprecated.SORTMERGE_JOIN, "true"))
}
(keyValueOutput, runFunc)
case Some((SQLConf.Deprecated.PARQUET_UNSAFE_ROW_RECORD_READER_ENABLED, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.PARQUET_UNSAFE_ROW_RECORD_READER_ENABLED} is " +
s"deprecated and will be ignored. Vectorized parquet reader will be used instead.")
Seq(Row(SQLConf.PARQUET_VECTORIZED_READER_ENABLED, "true"))
}
(keyValueOutput, runFunc)
// Configures a single property.
case Some((key, Some(value))) =>
val runFunc = (sparkSession: SparkSession) => {
sparkSession.setConf(key, value)
Seq(Row(key, value))
}
(keyValueOutput, runFunc)
// (In Hive, "SET" returns all changed properties while "SET -v" returns all properties.)
// Queries all key-value pairs that are set in the SQLConf of the sparkSession.
case None =>
val runFunc = (sparkSession: SparkSession) => {
sparkSession.getAllConfs.map { case (k, v) => Row(k, v) }.toSeq
}
(keyValueOutput, runFunc)
// Queries all properties along with their default values and docs that are defined in the
// SQLConf of the sparkSession.
case Some(("-v", None)) =>
val runFunc = (sparkSession: SparkSession) => {
sparkSession.sessionState.conf.getAllDefinedConfs.map { case (key, defaultValue, doc) =>
Row(key, defaultValue, doc)
}
}
val schema = StructType(
StructField("key", StringType, nullable = false) ::
StructField("default", StringType, nullable = false) ::
StructField("meaning", StringType, nullable = false) :: Nil)
(schema.toAttributes, runFunc)
// Queries the deprecated "mapred.reduce.tasks" property.
case Some((SQLConf.Deprecated.MAPRED_REDUCE_TASKS, None)) =>
val runFunc = (sparkSession: SparkSession) => {
logWarning(
s"Property ${SQLConf.Deprecated.MAPRED_REDUCE_TASKS} is deprecated, " +
s"showing ${SQLConf.SHUFFLE_PARTITIONS.key} instead.")
Seq(Row(
SQLConf.SHUFFLE_PARTITIONS.key,
sparkSession.sessionState.conf.numShufflePartitions.toString))
}
(keyValueOutput, runFunc)
// Queries a single property.
case Some((key, None)) =>
val runFunc = (sparkSession: SparkSession) => {
val value =
try sparkSession.getConf(key) catch {
case _: NoSuchElementException => "<undefined>"
}
Seq(Row(key, value))
}
(keyValueOutput, runFunc)
}
override val output: Seq[Attribute] = _output
override def run(sparkSession: SparkSession): Seq[Row] = runFunc(sparkSession)
}
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