Hi Ricardo, I don't have examples right at hand, here is a link to our advanced map/reduce examples:
http://docs.basho.com/riak/kv/2.1.4/developing/app-guide/advanced-mapreduce/ Our own Joe Caswell provided this example: http://stackoverflow.com/a/23633491 If you run into issues after following our examples, feel free to share what you've done via a gist and we can continue to help out. -- Luke Bakken Engineer lbak...@basho.com On Tue, Jun 14, 2016 at 10:51 AM, Ricardo Mayerhofer <ricardo....@gmail.com> wrote: > Hi Luke, > Thanks for your reply! Can I use map/reduce operation to update documents? > Do you have any link with an example? > > On Tue, Jun 14, 2016 at 2:44 PM, Luke Bakken <lbak...@basho.com> wrote: >> >> Hi Ricardo, >> >> If you know your keys in advance, you can fetch the keys in parallel, >> update them, and write them back to Riak in parallel. >> >> Other options include map/reduce jobs that iterate over all the keys, >> but keep in mind that any key listing operation will be resource >> intensive. >> -- >> Luke Bakken >> Engineer >> lbak...@basho.com >> >> >> On Mon, Jun 13, 2016 at 11:06 AM, Ricardo Mayerhofer >> <ricardo....@gmail.com> wrote: >> > Hi all, >> > I've a large dataset in Riak (about 20 million keys), storing JSON >> > documents. I'd like to update those documents to remove a JSON >> > attribute. >> > What's the best way to approach this problem in Riak? >> > >> > Thanks. >> > >> > -- >> > Ricardo Mayerhofer >> > >> > _______________________________________________ >> > riak-users mailing list >> > riak-users@lists.basho.com >> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com >> > > > > > > -- > Ricardo Mayerhofer _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
