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```
This will bootstrap DataHub with sample datasets and sample users.
> ***Note***
> There is a [known issue](https://github.com/fastavro/fastavro/issues/292) with the Python Avro serialization library
> that can lead to unexpected result when it comes to union of types.
> Always [use the tuple notation](https://fastavro.readthedocs.io/en/latest/writer.html#using-the-tuple-notation-to-specify-which-branch-of-a-union-to-take) to avoid encountering these difficult-to-debug issues.
## Ingest metadata from LDAP to DataHub
The ldap_etl provides you ETL channel to communicate with your LDAP server.
```