public boolean isCancelled() {
    for (TapOperation op : ops) {
      if (!op.isCancelled()) {
        return false;
      }
    }
    return true;
  }
Determine if messages sent to this server and recorded on this TapStream
have been canceled.

@return true if all operations on this TapStream have been canceled
src/main/java/net/spy/memcached/tapmessage/TapStream.java