Hi all,
I have a document with some broken links (i.e. that point to a
non-existent key), and want to apply a map/reduce there.
var map = function(v, k, args) { ejsLog("/tmp/mr", "hello from map");
return [{from: "map"}] }
db.link({ bucket: "highlights", keep: false })
.map({source: map})
Francisco -
You have perfect timing. This same question came up yesterday in #riak.
The core of the issue is Riak runs map functions on the node hosting the
relevant data. In the case of a 'not found', there is no hosting node -- the
data doesn't exist -- so the map function is never invoked f
Gareth,
On 0.10 you can execute this sequence of commands from the console (or
riak-admin attach) of any node, to remove the node you want:
1> {ok, Client} = riak:local_client().
2> Client:remove_from_cluster('r...@10.1.5.37')
Of course, replace 'r...@10.1.5.37' with the name of the node you wa
Thanks Kevin. Makes sense.
For the record, this is how I have it now:
var reduce = function(v) {
return v.filter(function(n) { return !n.not_found })
}
db.link({ bucket: "highlights", keep: false })
.map({name: 'Riak.mapValuesJson'})
.reduce({source: reduce})
.run([["user_chapters", id]]
I've just pushed a fix for this API oversight to the tip of the
riak-java-client repository. You can pull and build source if you need the fix
now or wait for the next release.
Please feel free to report any problems you might encounter with this fix if
you do decide to try it out.
--Kevin
On
Hi all,
Does anyone know how I can specify one of the pre-existing javascript
functions when running a map-reduce from ruby?
For example, I want to run a reduce method that 1) specifies that I'm not
creating an anonymous function, and 2) calls one of the predefined
functions, eg 'reduce_sum' (as
Afternoon, Evening, Morning to all -
For today's recap - an updated Java Client, a Riak Video (no, it's
not a Riak Music Video), Riak at the upcoming Velocity Conference, and
a Gist about embedding Riak.
Enjoy,
Mark
Community Manager
Basho Technologies
wiki.basho.com
twitter.com/pharkmillups
Matthew,
The Ruby client gets a little clever here and tries to determine which kind of
phase you are submitting. If its a String that starts with "function", it
assumes you are passing the source. Otherwise, it assumes you are using a
built-in JS function. If you want to use an Erlang funct
I've been taking a look at how riakc_obj is used in the erlang PBC
client after the issue of updating metadata was brought up by Mikl
Kurkov a few weeks ago.
The typical use case for the library is to get some data from the
server, and then sometimes modify it/write it back again. With the
