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Checkpoint error with Azure Synapse #1847

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PierreDubrulle opened this issue Nov 13, 2023 · 0 comments · Fixed by #1848
Closed

Checkpoint error with Azure Synapse #1847

PierreDubrulle opened this issue Nov 13, 2023 · 0 comments · Fixed by #1848
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@PierreDubrulle
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PierreDubrulle commented Nov 13, 2023 •
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Environment

Delta-rs version: 0.12.0

Environment:

  • Azure Synapse
  • WSL2 - Debian
  • Python 3.11

Bug

A deltatable is hosted in an Azure DataLake. When trying to read the data via a SQL query performed in a Synapse workspace, an error is raised due to certain fields in the checkpoint file.
The problematic fields are those whose values are "null".

Solution

The solution is not to show fields with a 'null' value in the checkpoint json.
To achieve this, optional fields in the Checkpoint struct must not be serialized if they are null or None.
@PierreDubrulle PierreDubrulle added the bug Something isn't working label Nov 13, 2023
@PierreDubrulle PierreDubrulle mentioned this issue Nov 13, 2023
Merged
rtyler pushed a commit to PierreDubrulle/delta-rs that referenced this issue Nov 16, 2023
@PierreDubrulle @rtyler
Skip serializing optional fields if they're null
03d8d0e 
Fixes delta-io#1847
rtyler pushed a commit that referenced this issue Nov 16, 2023
@PierreDubrulle @rtyler
Skip serializing optional fields if they're null
691ed8b 
Fixes #1847
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fix: checkpoint error with Azure Synapse PierreDubrulle/delta-rs
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@PierreDubrulle