Hello All,
I've been fumbling through the wiki and the various blog posts, emails,
announcements and want to just outline my understanding of search/indices in
1.0. Let me outline them:
- Riak search is not enabled by default
- To enable riak search set enabled to true here:
https://github.com/basho/riak/blob/riak-1.0.0rc1/rel/files/app.config#L145
- To enable search on a bucket you must augment the bucket properties by
sending the bucket the following json: { "search" : true }
- Riak search will work regardless of which backend your data is in because it
keeps its data in a separate bucket which uses merge_index as the backend
(this is where it gets fuzzy)
- Riak search and secondary indices may be used in the same cluster at the same
time and even on the same bucket at the same time.
- Secondary indices are "enabled" on a per key basis by utilizing the correct
header syntax.
- In order for data to have a secondary index the backend for that bucket needs
to be leveldb because index data is kept in the same bucket as key/value data[0]
- in order for you to be able to use leveldb, you need to do one of the
following:
- either direct riak to use leveldb as the default backend here:
https://github.com/basho/riak/blob/riak-1.0.0rc1/rel/files/app.config#L46
- or enable multiple backends in the config file
- or specifically indicate the backend in the bucket prop (which still
requires the backend to be made available in app.config)
In short, is there a canonical reference somewhere that I'm jut missing?
Thanks gang,
-Alexander Sicular
@siculars
http://siculars.posterous.com
[0] "LevelDB stores data in a defined order, exactly what Secondary Indexes
needed, and it is actually versatile enough to manage both the index data AND
the object's value."
http://blog.basho.com/2011/09/14/Secondary-Indexes-in-Riak/_______________________________________________
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