FLINK-20488 supported show checkpoint type for each subtask, and it based on received `CheckpointOptions` and it's right.
FLINK-27251 supported timeout aligned to unaligned checkpoint barrier in the output buffers. It means the received `CheckpointOptions` can be converted from aligned checkpoint to unaligned checkpoint.
So, the unaligned checkpoint type may be wrong at subtask level. For example, as shown in the figure below, Unaligned checkpoint type is false, but it is actually Unaligned checkpoint (persisted data > 0).