Revert serialization optimization

man-group / arctic

High performance datastore for time series and tick data

https://arctic.readthedocs.io/en/latest/

GNU Lesser General Public License v2.1

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Closed BaiBaiHi closed 2 years ago

BaiBaiHi commented 2 years ago

Reverting the following commits:

2 bugs need to be addressed before this change can go in:

missing data in string columns need to be converted to NaNs
In the case of multiple chunks being passed into the Serializer, if a column is present in one chunk and not another AND the missing column is of datetime type, it needs to fill with NaT's.