Function append_recordbatch_to_timeseries 

fn append_recordbatch_to_timeseries(
    table: &str,
    timestamp_column_name: &str,
    value_column_name: &str,
    recordbatch: RecordBatch,
    timeseries: &mut Vec<TimeSeries>,
    timeseries_by_hash: &mut HashMap<u64, Vec<usize>>,
) -> Result<()>