@Override
  protected boolean shouldAck() {
    // bug #45704 - RemotePutAllOp's DPAO in another server conflicts with lingering DPAO from same
    // thread, so
    // we require an ACK if concurrency checks are enabled to make sure that the previous op has
    // finished first.
    return super.shouldAck() || getRegion().getConcurrencyChecksEnabled();
  }
Create RemoveAllPRMessages for primary buckets out of this op

@return a HashMap contain RemoveAllPRMessages, key is bucket id
geode-core/src/main/java/org/apache/geode/internal/cache/DistributedRemoveAllOperation.java