davidradl commented on code in PR #26003:
URL: https://github.com/apache/flink/pull/26003#discussion_r1927081643


##########
flink-runtime/src/test/java/org/apache/flink/runtime/memory/MemoryManagerConcurrentModReleaseTest.java:
##########
@@ -97,6 +101,12 @@ public void run() {
                 try {
                     MemorySegment seg = toModify.remove(0);
                     toModify.add(seg);
+                    // if the test running time reaches TEST_TIMEOUT_MS, we 
should lower the
+                    // priority of the Modifier thread to let segment release 
completes sooner.

Review Comment:
   nit: the comments still say it is lowering the priority. 
   The current text says "Modifier thread to let segment release completes 
sooner." - do you mean "Modifier thread to let it complete segment release 
sooner." 
   
   Is there a way to wait for the Modifier thread to do what it needs to do; 
polling it or checking some state or the like. If we sleep - I guess it still 
might not have finished.     
   
   



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