This ticket is a suggestion for a format change to the currentOp command request object. The interface would be more intuitive if the top-level predicates were scoped to a "filter" option, and the "$all" option (which shows inactive clients) was renamed to "includeInactive". The fact that $all is a valid query operator makes the format especially confusing (although, in the query predicate language, $all cannot be used as a top-level predicate, so the existing format is at least unambiguous).

To illustrate: the following is an example request in the existing format, which uses a filter object and the "$all" option:

db.adminCommand({currentOp: 1,
                 $or: [{client: /^127\./}, {secs_running: {$gt: 10}}],
                 $all: true,
                 connectionId: {$lt: 100}});

The same request in the suggested new format:

db.adminCommand({currentOp: 1,
                 filter: {$or: [{client: /^127\./}, {secs_running: {$gt: 10}],
                          connectionId: {$lt: 100}},
                 includeInactive: true});