xiongbo-sjtu commented on code in PR #43021:
URL: https://github.com/apache/spark/pull/43021#discussion_r1337996350
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core/src/test/scala/org/apache/spark/executor/CoarseGrainedExecutorBackendSuite.scala:
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@@ -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:
The above `assert` logic was added so that the thread-safety data structure
(i.e., CMH) will not be unintentionally refactored away later. That's why I
think that it's better for us to keep the logic here.
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