void destroyOfflineData() {
    Map<InternalDistributedMember, PersistentMemberID> onlineMembers =
        advisor.adviseInitializedPersistentMembers();
    persistenceAdvisor.checkMyStateOnMembers(onlineMembers.keySet());
    diskRegion.beginDestroyDataStorage();
    persistenceAdvisor.finishPendingDestroy();
    if (logger.isDebugEnabled()) {
      logger.debug("destroyed persistent data for {}" + getFullPath());
    }
  }
Destroy the offline data just for this bucket.
geode-core/src/main/java/org/apache/geode/internal/cache/ProxyBucketRegion.java