adriangb opened a new issue, #13574:
URL: https://github.com/apache/datafusion/issues/13574
### Describe the bug
Tested on a parquet file with a single `Dictionary(UInt32, Utf8)` column and
bloom filters, datafusion-cli won't use them to prune.
### To Reproduce
```rust
use arrow::array::RecordBatch;
use arrow_schema::DataType;
use bytes::{BufMut, BytesMut};
use datafusion::datasource::schema_adapter::DefaultSchemaAdapterFactory;
use parquet::arrow::ArrowWriter;
use parquet::file::properties::WriterProperties;
use std::sync::Arc;
async fn write_record_batch(data_type: &DataType, suffix: &str) {
let schema =
Arc::new(arrow::datatypes::Schema::new(vec![arrow::datatypes::Field::new(
"column",
data_type.clone(),
false,
)]));
let batch = RecordBatch::try_new(
Arc::new(arrow::datatypes::Schema::new(vec![arrow::datatypes::Field::new(
"column",
DataType::Utf8,
false,
)])),
vec![Arc::new(arrow::array::StringArray::from(vec!["Hello,
World!"]))],
)
.unwrap();
let batch = DefaultSchemaAdapterFactory::from_schema(schema)
.map_schema(batch.schema().as_ref())
.unwrap()
.0
.map_batch(batch)
.unwrap();
let mut buf = BytesMut::new().writer();
let schema = batch.schema();
let props = WriterProperties::builder()
.set_bloom_filter_enabled(true)
.set_statistics_enabled(parquet::file::properties::EnabledStatistics::None)
.build();
{
let mut writer = ArrowWriter::try_new(&mut buf, schema,
Some(props)).unwrap();
writer.write(&batch).unwrap();
writer.finish().unwrap();
}
tokio::fs::write(format!("hello_world{}.parquet", suffix),
buf.into_inner().freeze())
.await
.unwrap();
}
#[tokio::main]
async fn main() {
// Create a RecordBatch with a single string column with a single row
containing "Hello, World!"
let data_type = arrow::datatypes::DataType::Utf8;
write_record_batch(&data_type, "_plain").await;
let data_type = arrow::datatypes::DataType::Dictionary(
Box::new(arrow::datatypes::DataType::Int32),
Box::new(arrow::datatypes::DataType::Utf8),
);
write_record_batch(&data_type, "_dict").await;
let data_type = arrow::datatypes::DataType::Utf8View;
write_record_batch(&data_type, "_view").await;
}
```
You can now verify with `parquet bloom-filter -c column -v 'Not Hello,
World!' hello_world_dict.parquet` that the value can be pruned via bloom
fitlers.
But querying it with datafusion-cli using `explain analyze select * from
'hello_world_dict.parquet' where column = 'Not Hellow, World!';` confirms that
bloom filters aren't used. They are used for `_plain` or `_view`.
### Expected behavior
_No response_
### Additional context
_No response_
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