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KeyDistribution

xlog_cuda_tests::harness::generators

Struct KeyDistribution 

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pub struct KeyDistribution;
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Key distribution generator for hash table and join testing.

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impl KeyDistribution

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pub fn join_test_data( size: usize, overlap_ratio: f64, seed: u64, ) -> (Vec<u32>, Vec<u32>, usize)

Generate key pairs for join testing. Returns (left_keys, right_keys, expected_match_count).

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pub fn collision_keys(count: usize, collision_factor: usize) -> Vec<u32>

Generate keys with many hash collisions.

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pub fn groupby_keys(total_rows: usize, num_groups: usize, seed: u64) -> Vec<u32>

Generate keys for groupby testing with specified group count.

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