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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
import java.net.URL
import org.apache.spark.SparkFunSuite
/**
* Verify that some classes load and that others are not found on the classpath.
*
*
* This is used to detect classpath and shading conflict, especially between
* Spark's required Kryo version and that which can be found in some Hive versions.
*/
class ClasspathDependenciesSuite extends SparkFunSuite {
private val classloader = this.getClass.getClassLoader
private def assertLoads(classname: String): Unit = {
val resourceURL: URL = Option(findResource(classname)).getOrElse {
fail(s"Class $classname not found as ${resourceName(classname)}")
}
logInfo(s"Class $classname at $resourceURL")
classloader.loadClass(classname)
}
private def assertLoads(classes: String*): Unit = {
classes.foreach(assertLoads)
}
private def findResource(classname: String): URL = {
val resource = resourceName(classname)
classloader.getResource(resource)
}
private def resourceName(classname: String): String = {
classname.replace(".", "/") + ".class"
}
private def assertClassNotFound(classname: String): Unit = {
Option(findResource(classname)).foreach { resourceURL =>
fail(s"Class $classname found at $resourceURL")
}
intercept[ClassNotFoundException] {
classloader.loadClass(classname)
}
}
private def assertClassNotFound(classes: String*): Unit = {
classes.foreach(assertClassNotFound)
}
private val KRYO = "com.esotericsoftware.kryo.Kryo"
private val SPARK_HIVE = "org.apache.hive."
private val SPARK_SHADED = "org.spark-project.hive.shaded."
test("shaded Protobuf") {
assertLoads(SPARK_SHADED + "com.google.protobuf.ServiceException")
}
test("hive-common") {
assertLoads("org.apache.hadoop.hive.conf.HiveConf")
}
test("hive-exec") {
assertLoads("org.apache.hadoop.hive.ql.CommandNeedRetryException")
}
private val STD_INSTANTIATOR = "org.objenesis.strategy.StdInstantiatorStrategy"
test("unshaded kryo") {
assertLoads(KRYO, STD_INSTANTIATOR)
}
test("Forbidden Dependencies") {
assertClassNotFound(
SPARK_HIVE + KRYO,
SPARK_SHADED + KRYO,
"org.apache.hive." + KRYO,
"com.esotericsoftware.shaded." + STD_INSTANTIATOR,
SPARK_HIVE + "com.esotericsoftware.shaded." + STD_INSTANTIATOR,
"org.apache.hive.com.esotericsoftware.shaded." + STD_INSTANTIATOR
)
}
test("parquet-hadoop-bundle") {
assertLoads(
"parquet.hadoop.ParquetOutputFormat",
"parquet.hadoop.ParquetInputFormat"
)
}
}
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