LuciferYang commented on code in PR #50022:
URL: https://github.com/apache/spark/pull/50022#discussion_r1964017993
##########
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:
Then, perhaps we can try to refactor a bit here, maybe like
```scala
JdkProxy.getInvocationHandler(proxy) match {
case syncHandler if
syncHandler.getClass.getName.endsWith("SynchronizedHandler") =>
val realMsc = getFieldValue(syncHandler,
"client").asInstanceOf[IMetaStoreClient]
configureMaxThriftMessageSize(hiveConf, realMsc)
case retryHandler: RetryingMetaStoreClient =>
val realMsc = getFieldValue(retryHandler,
"base").asInstanceOf[IMetaStoreClient]
configureMaxThriftMessageSize(hiveConf, realMsc)
case _ => // do nothing
}
private def getFieldValue(obj: AnyRef, fieldName: String): AnyRef = {
val field = obj.getClass.getDeclaredField(fieldName)
field.setAccessible(true)
field.get(obj)
}
```
hmm... Perhaps the exception type caught in the catch block needs to be
changed.
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