jorgecarleitao commented on a change in pull request #8172:
URL: https://github.com/apache/arrow/pull/8172#discussion_r487305150
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File path: rust/datafusion/benches/aggregate_query_sql.rs
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@@ -39,72 +46,105 @@ fn aggregate_query(ctx: &mut ExecutionContext, sql: &str) {
for _batch in results {}
}
-fn create_context() -> ExecutionContext {
- // define schema for data source (csv file)
+fn create_data(size: usize, null_density: f64) -> Vec<Option<f64>> {
+ // use random numbers to avoid spurious compiler optimizations wrt to
branching
+ let mut rng = rand::thread_rng();
+
+ (0..size)
+ .map(|_| {
+ if rng.gen::<f64>() > null_density {
+ None
+ } else {
+ Some(rng.gen::<f64>())
+ }
+ })
+ .collect()
+}
+
+fn create_context(
+ partitions_len: usize,
+ array_len: usize,
+ batch_size: usize,
+) -> Result<ExecutionContext> {
+ // define a schema.
let schema = Arc::new(Schema::new(vec![
- Field::new("c1", DataType::Utf8, false),
- Field::new("c2", DataType::UInt32, false),
- Field::new("c3", DataType::Int8, false),
- Field::new("c4", DataType::Int16, false),
- Field::new("c5", DataType::Int32, false),
- Field::new("c6", DataType::Int64, false),
- Field::new("c7", DataType::UInt8, false),
- Field::new("c8", DataType::UInt16, false),
- Field::new("c9", DataType::UInt32, false),
- Field::new("c10", DataType::UInt64, false),
- Field::new("c11", DataType::Float32, false),
- Field::new("c12", DataType::Float64, false),
- Field::new("c13", DataType::Utf8, false),
+ Field::new("utf8", DataType::Utf8, false),
+ Field::new("f32", DataType::Float32, false),
+ Field::new("f64", DataType::Float64, false),
]));
- let testdata = env::var("ARROW_TEST_DATA").expect("ARROW_TEST_DATA not
defined");
+ // define data.
+ let partitions = (0..partitions_len)
+ .map(|_| {
+ (0..array_len / batch_size / partitions_len)
+ .map(|i| {
+ let keys: Vec<String> = (0..batch_size)
+ .map(
+ // the 4 here is the number of different keys.
+ // a higher number increase sparseness
+ |i| format!("hi{}", i % 4),
Review comment:
This should be random, i%4 is quite predictable.
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