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  1. MariaDB Server
  2. MDEV-23338

server crash on select for update

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      When we execute select for update SQL through airflow, it causes MariaDB crash。

      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x7f9cb0948970): SELECT task_instance.try_number AS task_instance_try_number, task_instance.task_id AS task_instance_task_id, task_instance.dag_id AS task_instance_dag_id, task_instance.execution_date AS task_instance_execution_date, task_instance.start_date AS task_instance_start_date, task_instance.end_date AS task_instance_end_date, task_instance.duration AS task_instance_duration, task_instance.state AS task_instance_state, task_instance.max_tries AS task_instance_max_tries, task_instance.hostname AS task_instance_hostname, task_instance.unixname AS task_instance_unixname, task_instance.job_id AS task_instance_job_id, task_instance.pool AS task_instance_pool, task_instance.pool_slots AS task_instance_pool_slots, task_instance.queue AS task_instance_queue, task_instance.priority_weight AS task_instance_priority_weight, task_instance.operator AS task_instance_operator, task_instance.queued_dttm AS task_instance_queued_dttm, task_instance.pid AS task_instance_pid, task_instance.executor_config AS task_instance_executor_config FROM task_instance WHERE (task_instance.dag_id = 'BROAD_P_IPDP_ACBAL_STA_F' AND task_instance.task_id = 'check_mysql_pythonOperatorIPDP_CONFIRMATION_TXRECORD_I' AND task_instance.execution_date = '2020-07-20 01:00:00' OR task_instance.dag_id = 'BROAD_P_IPDP_ACBAL_STA_F' AND task_instance.task_id = 'check_mysql_pythonOperatorIPDP_PRODUCT_NAV_INFO_F' AND task_instance.execution_date = '2020-07-20 01:00:00' OR task_instance.dag_id = 'BROAD_P_GJJ_BAT_CARD_BIND_STA_F' AND task_instance.task_id = 'pre-step-GJJ_BAT_CARD_BIND_DETAIL_RECEIVE_I' AND task_instance.execution_date = '2020-07-20 01:00:00' OR task_instance.dag_id = 'BROAD_P_GJJ_BAT_CARD_BIND_STA_F' AND task_instance.task_id = 'pre-step-GJJ_BAT_CARD_BIND_SUM_RECEIVE_I' AND task_instance.execution_date = '2020-07-20 01:00:00' OR task_instance.dag_id = 'BROAD_P_GJJ_BAT_CARD_BIND_STA_F' AND task_instance.task_id = 'pre-step-GJJ_BAT_TRADE_DETAIL_I' AND task_instance.execution_date = '2020-07-20 01:00:00' OR task_instance.dag_id = 'BROAD_P_GJJ_BAT_CARD_BIND_STA_F' AND task_instance.task_id = 'pre-step-GJJ_LOCAL_TRAN_GJJ_F' AND task_instance.execution_date = '2020-07-20 01:00:00') AND task_instance.state IN ('scheduled') FOR UPDATE
      Connection ID (thread ID): 38313056
      Status: NOT_KILLED

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              Assignee:
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              Reporter:
              zhangwf zhangweifeng
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