boolean allowKrfCreation() {
    // Compactor might be stopped by cache-close. In that case, we should not create krf
    return diskException.get() == null
        && (oplogCompactor == null || oplogCompactor.keepCompactorRunning());
  }
It invokes appropriate methods of super & current class to clear the Oplogs.

@param rvv if not null, clear the region using the version vector
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreImpl.java