[SPARK-53949][CONNECT] Use `Utils.getRootCause` instead of `Throwables.getRootCause`
### What changes were proposed in this pull request?
This PR aims to replace Guava's `Throwables.getRootCause` with the newly added `Utils.getRootCause` in SPARK-53123.
### Why are the changes needed?
Use the existing utility functions in Spark.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Pass Github Actions
### Was this patch authored or co-authored using generative AI tooling?
No
Closes #52658 from LuciferYang/throwables-getrootcause.
Authored-by: yangjie01 <yangjie01@baidu.com>
Signed-off-by: yangjie01 <yangjie01@baidu.com>
diff --git a/scalastyle-config.xml b/scalastyle-config.xml
index f9b260e..a110f1e 100644
--- a/scalastyle-config.xml
+++ b/scalastyle-config.xml
@@ -827,6 +827,11 @@
<customMessage>Use stackTraceToString of JavaUtils/SparkFileUtils/Utils instead.</customMessage>
</check>
+ <check customId="googleThrowablesGetRootCause" level="error" class="org.scalastyle.file.RegexChecker" enabled="true">
+ <parameters><parameter name="regex">\bThrowables\.getRootCause\b</parameter></parameters>
+ <customMessage>Use getRootCause of SparkErrorUtils or Utils instead</customMessage>
+ </check>
+
<check customId="preconditionschecknotnull" level="error" class="org.scalastyle.file.RegexChecker" enabled="true">
<parameters><parameter name="regex">\bPreconditions\.checkNotNull\b</parameter></parameters>
<customMessage>Use requireNonNull of java.util.Objects instead.</customMessage>
diff --git a/sql/connect/server/src/main/scala/org/apache/spark/sql/connect/planner/SparkConnectPlanner.scala b/sql/connect/server/src/main/scala/org/apache/spark/sql/connect/planner/SparkConnectPlanner.scala
index 97bdf23..114a20e 100644
--- a/sql/connect/server/src/main/scala/org/apache/spark/sql/connect/planner/SparkConnectPlanner.scala
+++ b/sql/connect/server/src/main/scala/org/apache/spark/sql/connect/planner/SparkConnectPlanner.scala
@@ -24,7 +24,6 @@
import scala.util.Try
import scala.util.control.NonFatal
-import com.google.common.base.Throwables
import com.google.common.collect.Lists
import com.google.protobuf.{Any => ProtoAny, ByteString}
import io.grpc.{Context, Status, StatusRuntimeException}
@@ -1972,7 +1971,7 @@
Utils.deserialize[T](fun.getPayload.toByteArray, Utils.getContextOrSparkClassLoader)
} catch {
case t: Throwable =>
- Throwables.getRootCause(t) match {
+ Utils.getRootCause(t) match {
case nsm: NoSuchMethodException =>
throw new SparkClassNotFoundException(
"INTERNAL_ERROR",
