Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/8909#discussion_r41450970
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala
---
@@ -148,53 +150,88 @@ private[hive] class IsolatedClientLoader(
name.replaceAll("\\.", "/") + ".class"
/** The classloader that is used to load an isolated version of Hive. */
- protected val classLoader: ClassLoader = new URLClassLoader(allJars,
rootClassLoader) {
- override def loadClass(name: String, resolve: Boolean): Class[_] = {
- val loaded = findLoadedClass(name)
- if (loaded == null) doLoadClass(name, resolve) else loaded
- }
+ private[hive] var classLoader: ClassLoader = if (isolationOn) {
+ new URLClassLoader(allJars, rootClassLoader) {
+ val cache = new java.util.concurrent.ConcurrentHashMap[String,
Class[_]]
--- End diff --
will remove the cache in this PR.
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