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Terminate a Running Federated Database Instance Query

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  • Syntax
  • Options
  • Output
  • Examples

You can terminate long-running queries using the killOp command. For more information, see killOp. In Atlas Data Federation:

  • The op parameter value is an ObjectId.

  • The comment parameter is not supported.

If you're an Admin user or a user with the killop privilege, you can terminate any query on a federated database. The user who issued the query can also terminate the query. To run this command, use db.runCommand(). You must run killOp against the admin database.

db.runCommand({ "killOp": 1, "op": ObjectId(<hexadecimal>) })
Field
Type
Description
Necessity
op
Unique identifier, in ObjectId format, of the operation to terminate. You can use $currentOp to retrieve the opid of the operation to terminate.
Required

killOp returns the following if it succeeds in marking the specified operation for termination:

{ "info" : "attempting to kill op", "ok" : 1 }

Note that the output is the same whether or not the operation being terminated is currently running. You can use $currentOp to verify that the operation was terminated.

For the example below, suppose a query with opid value of ObjectId("1635fad364c529820c6f9e76") is running. The following command terminates this query.

use admin
db.runCommand({ "killOp": 1, "op": ObjectId("1635fad364c529820c6f9e76") })

The previous command returns the following:

{ "info" : "attempting to kill op", "ok" : 1 }

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