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Registered views with FFI schema providers cannot be executed #1444

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Description

@timsaucer

Describe the bug

When you have a FFI based schema provider and you register a view with it, it is unable to be executed. This is a regression from 51.0.0 to 52.3.0.

To Reproduce

Add this test to examples/datafusion-ffi-example/python/tests/_test_schema_provider.py

def test_table_provider_view():
    ctx = SessionContext()

    schema_provider = FixedSchemaProvider()
    ctx.catalog().register_schema("ffi_schema", schema_provider)

    df = ctx.read_table(create_test_dataset())

    ctx.register_view("ffi_schema.my_view", df)

    ctx.sql("SELECT * from ffi_schema.my_view").show()

Expected behavior

We should be able to read views like this.

Additional context

The error generated is:

E       Exception: DataFusion error: FFI error: FFI error: Error serializing custom table at /Users/tsaucer/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/datafusion-proto-53.0.0/src/logical_plan/mod.rs:1194
E       caused by
E       This feature is not implemented: LogicalExtensionCodec is not provided

Activity

  1. timsaucer commented on Mar 25, 2026

    @timsaucer
    MemberAuthor

    Closing in favor of apache/datafusion#21155

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