Comments (2)
I wonder if the way to achieve this might be something like #2293, this would allow making schema adaption a standard execution node, as opposed to an implementation detail of ParquetExec
from datafusion.
Perhaps a good starting place would be to make Schema Adapter public. It seems entirely an private struct today https://docs.rs/datafusion/latest/datafusion/index.html?search=SchemaAdapter
In general I think this ticket is another potential reason to make ParquetExec
easier to use by other libraries, not just DataFusion itself (via ListingTable)
We certainly use ParquetExec directly in INfluxDB 3.0 so I would be interested in helping make this easier to do (as it would also decrease our maintenance burden()
from datafusion.
Related Issues (20)
- Make `SessionContext::enable_url_table` consume `self`
- Support adding a single new table factory to `SessionStateBuilder` HOT 3
- Support Register object stores via SessionStateBuilder HOT 2
- Make it clearer that `RuntimeEnv::new()` is fallable HOT 2
- Implement `Debug` for `SessionStateBuilder HOT 4
- Sort Pushdown Causes an Invalid Plan
- Potential regression in Schema / nullability calculations after upgrade to 42.0.0 HOT 1
- EXPLAIN ANALYZE metrics should be sorted alphabetically
- Property based testing to detect more (subtle and edge cases) bugs
- Incorrect results when using grouping sets with data containing nulls
- Concise API to create DataFrame from collection HOT 1
- Continue to improve performance of `trim` HOT 1
- ListingTableUrl should allow direct construction HOT 1
- parquet: Refine `time_elapsed_opening` metric
- Making `LexOrderingRequest` an actual struct
- parquet: Add support for user-provided metadata loaders
- Add insert_or_update and get_payloads methods to binary_map/binary_view_map HOT 1
- Fusing partial aggregation with repartition HOT 3
- Remove the unsafe codes in `trim` by using `Pattern`
- Panic when inserting array literal with NULL element into a table where the matching column has a non-nullable element
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from datafusion.