mridulm commented on code in PR #43021:
URL: https://github.com/apache/spark/pull/43021#discussion_r1337971206


##########
core/src/test/scala/org/apache/spark/executor/CoarseGrainedExecutorBackendSuite.scala:
##########
@@ -302,7 +302,12 @@ class CoarseGrainedExecutorBackendSuite extends 
SparkFunSuite
           resourceProfile = ResourceProfile.getOrCreateDefaultProfile(conf))
       assert(backend.taskResources.isEmpty)
 
-      val taskId = 1000000
+      // Ensure thread-safety 
(https://issues.apache.org/jira/browse/SPARK-45227)
+      assert(backend.taskResources.isInstanceOf[
+        ConcurrentMap[Long, Map[String, ResourceInformation]]
+      ])

Review Comment:
   Do you want to drop this `assert` @xiongbo-sjtu  ?



##########
core/src/test/scala/org/apache/spark/executor/CoarseGrainedExecutorBackendSuite.scala:
##########
@@ -302,7 +302,12 @@ class CoarseGrainedExecutorBackendSuite extends 
SparkFunSuite
           resourceProfile = ResourceProfile.getOrCreateDefaultProfile(conf))
       assert(backend.taskResources.isEmpty)
 
-      val taskId = 1000000
+      // Ensure thread-safety 
(https://issues.apache.org/jira/browse/SPARK-45227)
+      assert(backend.taskResources.isInstanceOf[
+        ConcurrentMap[Long, Map[String, ResourceInformation]]
+      ])

Review Comment:
   nit: Do you want to drop this `assert` @xiongbo-sjtu  ?



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