内存报错后宕机

请问是什么原因，报错信息如下：
I0905 08:01:59.988050 46937 task_worker_pool.cpp:1643] successfully publish version|signature=1384630731|transaction_id=1384630731|tablets_num=5|cost(s)=0
W0905 08:01:59.988256 45379 status.h:396] meet error status: [ABORTED]Allocator sys memory check failed: Cannot alloc:56, consuming tracker:<Query#Id=d66f426475524638-98170b5e6bb5774e>, peak used 88712, current used 88712, exec node:<>, process memory used 212.68 GB exceed limit 201.12 GB or sys available memory 22.81 GB less than low water mark 1.60 GB.