$set: {} is now rejected by the update framework, but worked as a noop prior to 2.6

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    • Type: Bug
    • Resolution: Duplicate
    • Priority: Major - P3
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    • Affects Version/s: 2.6.1
    • Component/s: Write Ops
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      > db.runCommand({ findAndModify: "foo", query:{_id: ObjectId("536beb62fe2ac487fb241614")}, update:{$set : {} }, upsert:true} )
{
	"value" : null,
	"errmsg" : "exception: '$set' is empty. You must specify a field like so: {$mod: {<field>: ...}}",
	"code" : 9,
	"ok" : 0
}
> db.foo.update({_id: ObjectId("536beb62fe2ac487fb241614")},{$set:{}},true)
WriteResult({
	"nMatched" : 0,
	"nUpserted" : 0,
	"nModified" : 0,
	"writeError" : {
		"code" : 9,
		"errmsg" : "'$set' is empty. You must specify a field like so: {$mod: {<field>: ...}}"
	}
})
      Show
      > db.runCommand({ findAndModify: "foo" , query:{_id: ObjectId( "536beb62fe2ac487fb241614" )}, update:{$set : {} }, upsert: true } ) { "value" : null , "errmsg" : "exception: '$set' is empty. You must specify a field like so: {$mod: {<field>: ...}}" , "code" : 9, "ok" : 0 } > db.foo.update({_id: ObjectId( "536beb62fe2ac487fb241614" )},{$set:{}}, true ) WriteResult({ "nMatched" : 0, "nUpserted" : 0, "nModified" : 0, "writeError" : { "code" : 9, "errmsg" : " '$set' is empty. You must specify a field like so: {$mod: {<field>: ...}}" } })
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      > db.runCommand({ findAndModify: "foo", query:{_id: ObjectId("536beb62fe2ac487fb241614")}, update:{$set : {} }, upsert:true} )
{
	"value" : null,
	"errmsg" : "exception: '$set' is empty. You must specify a field like so: {$mod: {<field>: ...}}",
	"code" : 9,
	"ok" : 0
}
> db.foo.update({_id: ObjectId("536beb62fe2ac487fb241614")},{$set:{}},true)
WriteResult({
	"nMatched" : 0,
	"nUpserted" : 0,
	"nModified" : 0,
	"writeError" : {
		"code" : 9,
		"errmsg" : "'$set' is empty. You must specify a field like so: {$mod: {<field>: ...}}"
	}
})

            Assignee:
            Unassigned
            Reporter:
            Matt Dannenberg (Inactive)
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            Watchers:
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              Created:
              Updated:
              Resolved: