Question: pandas get days in a column from start date?

start\_date = '01/01/2021' (dd/mm/yyyy)

df

```
    dates

    2021-01-01
    2021-01-02
    .
    .
    .
    2021-02-01
    .
    .
    .
    2021-06-01           (end date should be current date)

```

Answer: 
According to a latest confluent doc `NONE`: schema compatibility checks are disabled [docs](https://docs.confluent.io/platform/current/schema-registry/develop/api.html#compatibility):
The whole problem with serialisation was about the usage of the following flag in the kafka config:

```
"schema.registry.url"
"key.serializer"
"key.deserializer"
"value.serializer"
"value.deserializer"

```

Setting this flags in flink, even if they are logically correct leads to a undebuggable schema validation and serialisation chaos.
Omitted all of these flags and it works fine.
The registry url needs to be set in `ConfluentRegistryAvro(De)serializationSchema` only.