How to fix error with $_id_ when loading json in mongodb?

Question

MongoDB

I start to load json into mongodb using the command mongoimport --db test --collection one1 --file my.json and the error
2016-11-01T17:57:23.003+0200 flies insertDocument :: caused by :: 11000 E11000 duplicate key error index : test .one1.$_id_ dup key: { : "01001" }
json example

{ "_id" : "01001", "city" : "AGAWAM", "loc" : [ -72.622739, 42.070206 ], "pop" : 15338, "state" : "MA" }
{ "_id" : "01002", "city" : "CUSHMAN", "loc" : [ -72.51564999999999, 42.377017 ], "pop" : 36963, "state" : "MA" }

etc.
json is not an option

Answer 1

stackoverflow.com/questions/17114851/mongo-id-fiel...
there is something about demolishing indexes
but in general, if this occurs, problems are waiting for you somewhere