Panic when handle schema evolution in vortex file

[haohuaijin]

Problem

In datafusion, parquet use DefaultPhysicalExprAdapterFactory that can register to ListingTable to handle the schema evolution, for vortex i also register the DefaultPhysicalExprAdapterFactory, but it still have panic.

Reproduction

Run the examples in this repo https://github.com/haohuaijin/schema-evolution

# Parquet - works fine
cargo run --example parquet

# Vortex - panics
cargo run --example vortex

Scenario: Two files with different types for the code column:

• File 1: code is Utf8 (string: "A100", "B200", "C300")
• File 2: code is Int64 (integer: 400, 500, 600)

Both examples use DefaultPhysicalExprAdapterFactory to handle schema evolution.

Expected Behavior (Parquet)

Query succeeds with automatic type coercion (Int64 → Utf8):

+----+------+-------+
| id | code | value |
+----+------+-------+
| 1  | A100 | 100   |
| 2  | B200 | 200   |
| 3  | C300 | 300   |
| 4  | 400  | 400   |
| 5  | 500  | 500   |
| 6  | 600  | 600   |
+----+------+-------+

Actual Behavior (Vortex)

Application panics:

thread 'tokio-runtime-worker' panicked at vortex-error/src/lib.rs:310:33:
Failed to convert scalar to utf8:
  Expected a string scalar, found Primitive(I64(400))

Environment

• DataFusion: v52
• Arrow: v57
• Vortex: d9fffbe

[AdamGS]

thank you for your report! it seems like there's some deeper issue here as we've had other reports, I'll add this issue to that list.

[AdamGS]

I think I'll track this thing here, I'll make this case into a testcase in my branch.