Hi Jason,
couchdb has to pass all the updates to the javascript function. There's no way
to know ahead of time that the function won't call emit.
Each document is marshalled to an external process (couchjs) and the response
returned, and it's done sequentially (you get parallelism on this in couchdb
2.0 though).
B.
> On 20 Jun 2017, at 20:03, Jason Gordon <jason.gor...@assurebridge.com> wrote:
>
> When performing a bulk update, how much time should I expect for view
> generation for views that do not index the documents that I am updating?
>
> For example:
>
> I have a single view which is the only view in the design document. The
> view has the map function
>
> if (doc.type == 'Foo') {
> emit(doc.name, doc.age);
> }
>
>
> and no reduce function.
>
> I then add 8000 documents where doc.type == 'Bar'
>
> When I access the view the first time , it takes about 7 to 8 seconds to
> generate even though nothing is emitted. Of course, subsequent accesses to
> the view are much faster.
>
> I know that I can mitigate by querying the view after adding every couple
> of hundred documents but it surprises me that a generate takes this long
> when all that is happening is an if-condition being checked.
>
> Is this to be expected or is there a better way to structure the view?
>
> Thanks,
>
> Jason
