dongjoon-hyun commented on code in PR #46873:
URL: https://github.com/apache/spark/pull/46873#discussion_r1678871813
##########
core/src/main/scala/org/apache/spark/util/Utils.scala:
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@@ -3072,15 +3072,14 @@ private[spark] object Utils
*/
lazy val isG1GC: Boolean = {
Try {
+ // SPARK-48505: If the initialization probe of `HotSpotDiagnosticMXBean`
is successful,
+ // the API of `HotSpotDiagnosticMXBean` can be used directly in
subsequent operations,
+ // instead of invoking it through reflection.
val clazz =
Utils.classForName("com.sun.management.HotSpotDiagnosticMXBean")
- .asInstanceOf[Class[_ <: PlatformManagedObject]]
- val vmOptionClazz = Utils.classForName("com.sun.management.VMOption")
+ import com.sun.management.HotSpotDiagnosticMXBean
Review Comment:
Although the code becomes simpler, I'm not sure this is a better recommended
style: `import com.sun.*` in our source code.
There is a similar discussion here.
- https://github.com/apache/spark/pull/43503#discussion_r1671300283
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