@Override
  public short getVersion() {
    return CHECKPOINT_VERSION;
  }
Constructs the checkpoint with separated input and state offsets

@param checkpointId {@link CheckpointId} associated with this checkpoint
@param inputOffsets Map of Samza system stream partition to offset of the checkpoint
@param stateCheckpoints Map of state backend factory name to map of local state store names
                        to state checkpoints
samza-api/src/main/java/org/apache/samza/checkpoint/CheckpointV2.java