tsbs_load_timescale data loss

[GreateFang]

I gennerated a iot dataset and load them to timescaleDB and another database, while the num of data load in timescaleDB less than the another DB.

I check the dataset and found some data cannot found in timescale. follow is a example:

[GreateFang]

I think the reason is the logic here ：If a truck has already reported a tag to table `tags` once, it will not report again, even if the truck later reports a different tag (simulating imperfect data in the real world).

I think the logic here will also result in will inconsistent tags data when running tsbs_load_timescale multiple times with the same data set. because the tags data is influenced by the order of batch writes.