@Override
  public boolean equals(final Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null || getClass() != obj.getClass()) {
      return false;
    }
    final PollTabletsPayload that = (PollTabletsPayload) obj;
    return Objects.equals(this.commitContext, that.commitContext)
        && Objects.equals(this.offset, that.offset);
  }
The index for the next batch of tablets.
iotdb-client/service-rpc/src/main/java/org/apache/iotdb/rpc/subscription/payload/poll/PollTabletsPayload.java