Hello,

$pushAll an empty list [] is reported as $pushAll an empty object {} in the logs :

db.adminCommand({setParameter:1, logLevel: 1})
db.test.save({_id: 1})
db.test.update({_id: 1}, {'$pushAll': {'data': []}})
db.adminCommand({getLog: 'global'})
{
       "log" : [
         "Thu Nov 24 11:02:30 [conn193422] update errorviewer_dev.test query: { _id: 1.0 } update: { $pushAll: { data: {} } } idhack:1 0ms"
       ],
        "ok" : 1
}

This is a minor issue of course but it made me crasy investigating my code to find out why I was doing a $pushAll with and empty object {} (which is an operation error) before running the getPrevError() command to find out that in fact there were no issue and thus no such $pushAll: {} operations.

Thank you very much !
Cheers,
CH