Function convert_bulk_part 

pub fn convert_bulk_part(
    part: BulkPart,
    region_metadata: &RegionMetadataRef,
    primary_key_codec: Arc<dyn PrimaryKeyCodec>,
    schema: SchemaRef,
    store_primary_key_columns: bool,
) -> Result<Option<BulkPart>>

Converts a BulkPart that is unordered and without encoded primary keys into a BulkPart with the same format as produced by BulkPartConverter.

This function takes a BulkPart where:

• For dense encoding: Primary key columns may be stored as individual columns
• For sparse encoding: The __primary_key column should already be present with encoded keys
• The batch may not be sorted

And produces a BulkPart where:

• Primary key columns are optionally stored (depending on store_primary_key_columns and encoding)
• An encoded __primary_key dictionary column is present
• The batch is sorted by (primary_key, timestamp, sequence desc)

Arguments

• part - The input BulkPart to convert
• region_metadata - Region metadata containing schema information
• primary_key_codec - Codec for encoding primary keys
• schema - Target schema for the output batch
• store_primary_key_columns - If true and encoding is not sparse, stores individual primary key columns

Returns

Returns None if the input part has no rows, otherwise returns a new BulkPart with encoded primary keys and sorted data.