tidb备份失败Could not read data from gddn_monitor.d_driver_files: Lost connection to MySQL server during query

** (mydumper:18756): CRITICAL **: 14:34:44.673: Could not read data from gddn_monitor.d_driver_files: Lost connection to MySQL server during query

** (mydumper:18756): CRITICAL **: 14:34:44.673: Could not read data from gddn_monitor.d_dust_rundata: Lost connection to MySQL server during query

** (mydumper:18756): CRITICAL **: 14:34:44.676: Error dumping table (gddn_monitor.d_elevator_work_data) data: MySQL server has gone away

** (mydumper:18756): CRITICAL **: 14:34:44.676: Error dumping table (gddn_monitor.d_materiel_live) data: MySQL server has gone away

** (mydumper:18756): CRITICAL **: 14:34:44.676: Could not read data from gddn_monitor.d_elevator_rundata: Lost connection to MySQL server during query

** (mydumper:18756): CRITICAL **: 14:34:44.674: Could not read data from gddn_monitor.d_dust_alarm: Lost connection to MySQL server during query

** (mydumper:18756): CRITICAL **: 14:34:44.676: Error dumping table (gddn_monitor.d_materiel_rundata) data: MySQL server has gone away

** (mydumper:18756): CRITICAL **: 14:34:44.677: Error dumping table (gddn_monitor.d_mobile_alarm_push) data: MySQL server has gone away

详细日志见

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