@Override
    void logNewOperation() {
      currentVersionOperationThreads.put(Thread.currentThread(),
          new ExceptionWrapper(new Exception("stack trace")));
    }
for debugging stalled state-flush operations we track threads performing operations
and capture the state when startOperation is invoked
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionAdvisor.java