From 163d3443681af2c5ff246ecc546355934c0f6dbb Mon Sep 17 00:00:00 2001
From: Feng Liu <fengliu@databricks.com>
Date: Thu, 28 Dec 2017 17:02:16 -0800
Subject: [PATCH] init

---
 .../org/apache/spark/sql/hive/client/IsolatedClientLoader.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala
index 930f0dd4b32b8..7a76fd3fd2eb3 100644
--- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala
+++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala
@@ -248,7 +248,7 @@ private[hive] class IsolatedClientLoader(
   }
 
   /** The isolated client interface to Hive. */
-  private[hive] def createClient(): HiveClient = {
+  private[hive] def createClient(): HiveClient = synchronized {
     if (!isolationOn) {
       return new HiveClientImpl(version, sparkConf, hadoopConf, config, baseClassLoader, this)
     }