Populating MongoDB with sample documents including current datetime

Question

I'm trying to populate my MongoDB with sample data to run a performance test. My documents are meant to have a datetime field named last_update which I believe is self describing.

In order to have conclusive results I need a lot of documents (starting from 1M going to 1G). That's why I decided to use a tool like mongoimport to populate my collection.

Here's a line from my json file that I'm feeding to mongoimport:

{ "counter" : 0, "last_update" : new Date() }

I'm expecting each document to have the current datetime as it is saved into collection. But mongoimport exits with an error:

exception:BSON representation of supplied JSON is too large: code FailedToParse: FailedToParse: Expecting '}' or ',': offset:42

It seems mongoimport has a problem with new Date() statement. So my question is how can I add bulk number of documents into a collection with a field set to current time?

Answer 1

"The mongoimport tool provides a route to import content from a JSON, CSV, or TSV export created by mongoexport, or potentially, another third-party export tool." Hence i think u cannot use new Date(); in the json file. Try to insert data by using a javascript file.

db.collection.insert({ "counter" : 0, "last_update" : new Date() });

then use command 127.0.0.1/db new.js Otherwise u should give the datestring in the json to insert docs using mongoimport