Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17154#discussion_r104270996
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala
---
@@ -268,16 +268,19 @@ private[hive] class HiveClientImpl(
*/
def withHiveState[A](f: => A): A = retryLocked {
val original = Thread.currentThread().getContextClassLoader
- // Set the thread local metastore client to the client associated with
this HiveClientImpl.
- Hive.set(client)
+ val originalConfLoader = state.getConf.getClassLoader
// The classloader in clientLoader could be changed after addJar,
always use the latest
// classloader
+ Thread.currentThread().setContextClassLoader(clientLoader.classLoader)
--- End diff --
shall we add some comments to say why we need to do this?
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