Function generate_process_jit_partitions 

pub async fn generate_process_jit_partitions(
    config: &JitPartitionConfig,
    lakehouse: Arc<LakehouseContext>,
    blocks_view: &BlocksView,
    query_time_range: &TimeRange,
    process: Arc<ProcessMetadata>,
    stream_tag: &str,
) -> Result<Vec<SourceDataBlocksInMemory>, Error>

generate_process_jit_partitions lists the partitions that are needed to cover a time span for a specific process these partitions may not exist or they could be out of date Generates JIT partitions for a given time range filtered by process.