4 ms·

V8 is another important change that isn't really touted much in this release.

• tbrock 14y ago
  Yeah, this is a big deal. It enables very interesting opportunities to create a map reduce engine that isn't awful or which requires Java. People use Hadoop because they have to, not because it is great. Isn't it time for a better alternative now that the toothpaste is out of the tube re: map/reduce? Java doesn't even have hash literal syntax! Why would you ever want to query document oriented data with it as your language of expression?
  • lucian1900 14y ago
    It's not hard to write Hadoop map/reduce queries in other languages: mrjob for python is particularly nice. It's also not relevant that SpiderMonkey is being replaced with V8. Mongo's map/reduce is also just a toy, not at all comparable with Hadoop's and being deprecated in favour of the aggregation framework. Also, there already are decent alternative map/reduce implementations. Disco is a good example, with a similar design to Hadoop.
    • kstirman 14y ago
      MongoDB's MapReduce implementation is not being deprecated. The primary beneficiary of the V8 implementation is MapReduce, so it should be seen as further investment in this area. You can also run Hadoop MapReduce over data in MongoDB directly (24 - 29): http://www.slideshare.net/spf13/mongodb-and-hadoop http://www.slideshare.net/spf13/mongodb-and-hadoop