abellina commented on a change in pull request #25403: [SPARK-28679][YARN]
changes to setResourceInformation to handle empty resources and reflection
error handling
URL: https://github.com/apache/spark/pull/25403#discussion_r317602682
##########
File path:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ResourceRequestHelper.scala
##########
@@ -143,17 +143,28 @@ private object ResourceRequestHelper extends Logging {
require(resource != null, "Resource parameter should not be null!")
logDebug(s"Custom resources requested: $resources")
+ if (resources.isEmpty) {
+ // no point in going forward, as we don't have anything to set
+ return
+ }
+
if (!isYarnResourceTypesAvailable()) {
- if (resources.nonEmpty) {
- logWarning("Ignoring custom resource requests because " +
- "the version of YARN does not support it!")
- }
+ logWarning("Ignoring custom resource requests because " +
+ "the version of YARN does not support it!")
return
}
val resInfoClass = Utils.classForName(RESOURCE_INFO_CLASS)
val setResourceInformationMethod =
- resource.getClass.getMethod("setResourceInformation", classOf[String],
resInfoClass)
+ try {
+ resource.getClass.getMethod("setResourceInformation", classOf[String],
resInfoClass)
+ } catch {
+ case e: NoSuchMethodException =>
+ throw new SparkException(
+ s"Cannot find $RESOURCE_INFO_CLASS.setResourceInformation. " +
+ "This is likely due to a jar conflict between different yarn
versions.", e)
Review comment:
good catch @vanzin, updated.
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