Yang Jie created SPARK-45874:
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Summary: Remove Java version check from `IsolatedClientLoader`
Key: SPARK-45874
URL: https://issues.apache.org/jira/browse/SPARK-45874
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 4.0.0
Reporter: Yang Jie
{code:java}
val rootClassLoader: ClassLoader =
if (SystemUtils.isJavaVersionAtLeast(JavaVersion.JAVA_9)) {
// In Java 9, the boot classloader can see few JDK classes. The intended
parent
// classloader for delegation is now the platform classloader.
// See http://java9.wtf/class-loading/
val platformCL =
classOf[ClassLoader].getMethod("getPlatformClassLoader").
invoke(null).asInstanceOf[ClassLoader]
// Check to make sure that the root classloader does not know about Hive.
assert(Try(platformCL.loadClass("org.apache.hadoop.hive.conf.HiveConf")).isFailure)
platformCL
} else {
// The boot classloader is represented by null (the instance itself isn't
accessible)
// and before Java 9 can see all JDK classes
null
} {code}
Spark 4.0.0 has a minimum requirement of Java 17, so the version check for Java
9 is not necessary.
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