Function check_bulk_insert_batch 

pub fn check_bulk_insert_batch(
    metadata: &RegionMetadata,
    batch: &RecordBatch,
) -> Result<bool>

Checks the batch of a bulk insert against the region schema with the rules WriteRequest::check_schema applies to rows: column names are unique, every column is a column of the region with its Arrow type and contains nulls only if the region column is nullable, and a missing column is nullable or has a default value. Tags may use any string encoding. Sparse batches carry the tags in one encoded primary key column instead. Returns whether the batch misses columns that the writer fills.