kiszk commented on a change in pull request #24308: [SPARK-27397[Core] Take
care of OpenJ9 JVM in Spark
URL: https://github.com/apache/spark/pull/24308#discussion_r272802900
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File path: core/src/main/scala/org/apache/spark/util/SizeEstimator.scala
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@@ -131,8 +131,9 @@ object SizeEstimator extends Logging {
return System.getProperty(TEST_USE_COMPRESSED_OOPS_KEY).toBoolean
}
- // java.vm.info provides compressed ref info for IBM JDKs
- if (System.getProperty("java.vendor").contains("IBM")) {
+ // java.vm.info provides compressed ref info for IBM and OpenJ9 JDKs
+ if (System.getProperty("java.vendor").contains("IBM") ||
Review comment:
You are right, as described [here](https://github.com/eclipse/openj9/)
> The original source contribution to OpenJ9 came from the IBM "J9" JVM
which has been used in production by thousands of Java applications for the
last two decades.
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