pan3793 commented on code in PR #272:
URL:
https://github.com/apache/datasketches-memory/pull/272#discussion_r2776952318
##########
datasketches-memory-java8/src/main/java/org/apache/datasketches/memory/internal/ResourceImpl.java:
##########
@@ -82,6 +82,8 @@ public abstract class ResourceImpl implements Resource {
static final String NOT_MAPPED_FILE_RESOURCE = "This is not a memory-mapped
file resource";
static final String THREAD_EXCEPTION_TEXT = "Attempted access outside owning
thread";
+ private static boolean JAVA_VERSION_WARNING_PRINTED = false;
Review Comment:
`checkJavaVersion` can be called concurrently, it can be addressed by using
`AtomicBoolean`, and the caller side can be
```
if (p0 > 11 && JAVA_VERSION_WARNING_PRINTED.compareAndSet(false, true)) {
// print warning message
}
```
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