关于_bulk api的奇特设计格式,比如之前动手练习的,如: POST /_bulk {delete:{_index:test_index,_type:test_type,_id:4}} {create:{_index:test_index,_type:test_type,_id:5}} {test_field1:test client 5,test_field2:test service 5} {create:{_index:test_index,_type:test_type,_id:5