LuciferYang commented on code in PR #50022:
URL: https://github.com/apache/spark/pull/50022#discussion_r1964011764


##########
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala:
##########
@@ -1407,13 +1409,62 @@ private[hive] object HiveClientImpl extends Logging {
       case _ =>
         new HiveConf(conf, classOf[HiveConf])
     }
-    try {
+    val hive = try {
       Hive.getWithoutRegisterFns(hiveConf)
     } catch {
       // SPARK-37069: not all Hive versions have the above method (e.g., Hive 
2.3.9 has it but
-      // 2.3.8 don't), therefore here we fallback when encountering the 
exception.
+      // 2.3.8 doesn't), therefore here we fallback when encountering the 
exception.
       case _: NoSuchMethodError =>
         Hive.get(hiveConf)
     }
+    configureMaxThriftMessageSize(hiveConf, hive.getMSC)
+    hive
+  }
+
+  // SPARK-49489: a surgery for Hive 2.3.10 due to lack of HIVE-26633
+  private def configureMaxThriftMessageSize(
+      hiveConf: HiveConf, msClient: IMetaStoreClient): Unit = try {
+    msClient match {
+      // Hive uses Java Dynamic Proxy to enhance the MetaStoreClient to 
support synchronization
+      // and retrying, we should unwrap and access the real MetaStoreClient 
instance firstly
+      case proxy if JdkProxy.isProxyClass(proxy.getClass) =>
+        JdkProxy.getInvocationHandler(proxy) match {
+          case syncHandler if 
syncHandler.getClass.getName.endsWith("SynchronizedHandler") =>
+            val realMscField = SparkClassUtils.classForName(

Review Comment:
   Perhaps we can directly use 
`syncHandler.getClass().getDeclaredField("client")` here, and there should be 
no practical difference in effect.



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