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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.hive.execution
import org.apache.spark.sql.QueryTest
import org.apache.spark.sql.hive.test.TestHiveSingleton
import org.apache.spark.sql.test.SQLTestUtils
/**
* A set of tests that validates support for Hive Explain command.
*/
class HiveExplainSuite extends QueryTest with SQLTestUtils with TestHiveSingleton {
test("explain extended command") {
checkExistence(sql(" explain select * from src where key=123 "), true,
"== Physical Plan ==")
checkExistence(sql(" explain select * from src where key=123 "), false,
"== Parsed Logical Plan ==",
"== Analyzed Logical Plan ==",
"== Optimized Logical Plan ==")
checkExistence(sql(" explain extended select * from src where key=123 "), true,
"== Parsed Logical Plan ==",
"== Analyzed Logical Plan ==",
"== Optimized Logical Plan ==",
"== Physical Plan ==")
}
test("explain create table command") {
checkExistence(sql("explain create table temp__b as select * from src limit 2"), true,
"== Physical Plan ==",
"InsertIntoHiveTable",
"Limit",
"src")
checkExistence(sql("explain extended create table temp__b as select * from src limit 2"), true,
"== Parsed Logical Plan ==",
"== Analyzed Logical Plan ==",
"== Optimized Logical Plan ==",
"== Physical Plan ==",
"CreateTableAsSelect",
"InsertIntoHiveTable",
"Limit",
"src")
checkExistence(sql(
"""
| EXPLAIN EXTENDED CREATE TABLE temp__b
| ROW FORMAT SERDE "org.apache.hadoop.hive.serde2.columnar.ColumnarSerDe"
| WITH SERDEPROPERTIES("serde_p1"="p1","serde_p2"="p2")
| STORED AS RCFile
| TBLPROPERTIES("tbl_p1"="p11", "tbl_p2"="p22")
| AS SELECT * FROM src LIMIT 2
""".stripMargin), true,
"== Parsed Logical Plan ==",
"== Analyzed Logical Plan ==",
"== Optimized Logical Plan ==",
"== Physical Plan ==",
"CreateTableAsSelect",
"InsertIntoHiveTable",
"Limit",
"src")
}
test("SPARK-6212: The EXPLAIN output of CTAS only shows the analyzed plan") {
withTempTable("jt") {
val rdd = sparkContext.parallelize((1 to 10).map(i => s"""{"a":$i, "b":"str$i"}"""))
hiveContext.read.json(rdd).registerTempTable("jt")
val outputs = sql(
s"""
|EXPLAIN EXTENDED
|CREATE TABLE t1
|AS
|SELECT * FROM jt
""".stripMargin).collect().map(_.mkString).mkString
val shouldContain =
"== Parsed Logical Plan ==" :: "== Analyzed Logical Plan ==" :: "Subquery" ::
"== Optimized Logical Plan ==" :: "== Physical Plan ==" ::
"CreateTableAsSelect" :: "InsertIntoHiveTable" :: "jt" :: Nil
for (key <- shouldContain) {
assert(outputs.contains(key), s"$key doesn't exist in result")
}
val physicalIndex = outputs.indexOf("== Physical Plan ==")
assert(!outputs.substring(physicalIndex).contains("Subquery"),
"Physical Plan should not contain Subquery since it's eliminated by optimizer")
}
}
test("EXPLAIN CODEGEN command") {
checkExistence(sql("EXPLAIN CODEGEN SELECT 1"), true,
"WholeStageCodegen",
"Generated code:",
"/* 001 */ public Object generate(Object[] references) {",
"/* 002 */ return new GeneratedIterator(references);",
"/* 003 */ }"
)
checkExistence(sql("EXPLAIN CODEGEN SELECT 1"), false,
"== Physical Plan =="
)
checkExistence(sql("EXPLAIN EXTENDED CODEGEN SELECT 1"), true,
"WholeStageCodegen",
"Generated code:",
"/* 001 */ public Object generate(Object[] references) {",
"/* 002 */ return new GeneratedIterator(references);",
"/* 003 */ }"
)
checkExistence(sql("EXPLAIN EXTENDED CODEGEN SELECT 1"), false,
"== Parsed Logical Plan ==",
"== Analyzed Logical Plan ==",
"== Optimized Logical Plan ==",
"== Physical Plan =="
)
}
}
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