retry commit on MySQL deadlocks during backfill (#22696)
retry commit on MySQL deadlocks during backfill (#22696)


nathanielvarona/airflow,apache/airflow,apache/airflow,nathanielvarona/airflow,Acehaidrey/incubator-airflow,cfei18/incubator-airflow,nathanielvarona/airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,Acehaidrey/incubator-airflow,cfei18/incubator-airflow,lyft/incubator-airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,apache/airflow,nathanielvarona/airflow,danielvdende/incubator-airflow,lyft/incubator-airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,apache/airflow,lyft/incubator-airflow,apache/airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,Acehaidrey/incubator-airflow,apache/airflow,lyft/incubator-airflow,danielvdende/incubator-airflow