andygrove commented on code in PR #1332:
URL: https://github.com/apache/datafusion-comet/pull/1332#discussion_r1934475131
##########
native/core/src/execution/operators/scan.rs:
##########
@@ -304,11 +304,7 @@ fn scan_schema(input_batch: &InputBatch, data_types:
&[DataType]) -> SchemaRef {
.map(|(idx, c)| {
let datatype =
ScanExec::unpack_dictionary_type(c.data_type());
// We don't use the field name. Put a placeholder.
- if matches!(datatype, DataType::Dictionary(_, _)) {
- Field::new_dict(format!("col_{}", idx), datatype,
true, idx as i64, false)
Review Comment:
Fresh benchmark results:
Using fast encoding = 332 seconds (our published time is 331, and I do see
small variance on each run)
Using Arrow IPC = 334 seconds
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