Function combine_hashes

datafusion/common/src/hash_utils.rs:50–53

(l: u64, r: u64)

// Combines two hashes into one hash
#[inline]
pub fn combine_hashes(l: u64, r: u64) -> u64 {
    let hash = (17 * 37u64).wrapping_add(l);
    hash.wrapping_mul(37).wrapping_add(r)
}

/// Maximum size for the thread-local hash buffer before truncation (4MB = 524,288 u64 elements).
/// The goal of this is to avoid unbounded memory growth that would appear as a memory leak.