SteNicholas commented on a change in pull request #12516:
URL: https://github.com/apache/flink/pull/12516#discussion_r436526908



##########
File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/util/config/memory/jobmanager/JobManagerFlinkMemoryUtils.java
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@@ -88,16 +88,16 @@ private static void verifyJvmHeapSize(MemorySize 
jvmHeapSize) {
                }
        }
 
-       private static void verifyJobStoreCacheSize(Configuration config, 
MemorySize jvmHeapSize) {
+       private static void verifyJobStoreCacheSize(Configuration config, 
MemorySize offHeapMemorySize) {

Review comment:
       > This method is correct as the job cache is part of the JVM heap, not 
off-heap.
   > The problem is that `verifyJobStoreCacheSize` is called with 
`offHeapMemory` in `JobManagerFlinkMemoryUtils#createJobManagerFlinkMemory`:
   > `verifyJobStoreCacheSize(config, offHeapMemory);`
   > which should be:
   > `verifyJobStoreCacheSize(config, jvmHeap);` there.
   
   @azagrebin Sorry for previous misunderstanding for the problem. And I have 
updated this method.




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