Function slice_batch_by_vnodes 

pub fn slice_batch_by_vnodes(
    batch: &RecordBatch,
    row_vnodes: &[u32],
) -> Vec<(u32, RecordBatch)>

Slice batch by vnodes in a single pass, returning a vector of (vnode, RecordBatch). Avoids the $O(V \times R)$ loop and allocations of vnode-by-vnode slicing.

Panics

Panics if take or rebuild fails — only on internal-invariant violations.