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abm_chris's avatar
abm_chris
Icon for Advocate I rankAdvocate I
1 year ago
Solved

Python Notebook duckdb/delta intermittent permission errors

Hi,  I have been having intermittent issues over the past couple of weeks with duckdb executing sql queries and getting the below error: IOException: IO Error: Hit DeltaKernel FFI error (from: ...
data engineering
notebook
  • Shahid12523's avatar
    Shahid12523
    1 year ago

    The error is from DuckDB’s Delta Kernel when reading _delta_log files — it’s not a real permission issue, but an intermittent I/O/concurrency bug in Fabric.

    ✅ Fixes 

    Add retry logic around DuckDB queries.

    Avoid concurrent Spark + DuckDB reads on the same table.

    Keep DuckDB/Fabric runtime updated.

    If critical, use Spark SQL instead of DuckDB for stability.

    👉 It’s a platform-side intermittent bug, not your config.

v-lgarikapat's avatar
v-lgarikapat
Icon for Community Support rankCommunity Support
1 year ago

Hi abm_chris ,

Thanks for reaching out to the Microsoft fabric community forum.,

cvonredapt , BhaveshPatel , 

Thanks for your prompt response

abm_chris ,  

 

I wanted to follow up and confirm whether you’ve had the opportunity to review the information provided by cvonredapt , BhaveshPatel . If you have any questions or need further clarification, please don’t hesitate to reach out.

 

We appreciate your collaboration and support!

Best regards,
Lakshmi.