Greetings All,
I just have a couple of quick comments regarding using riak-search with
innostore. Thought it may save someone else a bit of trouble.
OK, starting with a standard dev install of riak-search (latest version). I
installed innostore and configured as per the wiki. So I had the following
lines in the app.config files of my 3 node development cluster:
{storage_backend, riak_kv_innostore_backend},
...
%% innostore config
{innostore, [
{data_home_dir, "data/innodb"}, %% Where data files go
{log_group_home_dir, "data/innodb"}, %% Where log files go
{buffer_pool_size, 268435456} %% 256MB in-memory buffer in bytes
]}
The cluster started up fine and I populated it with some initial data with no
errors. Found that I was unable to list keys in a bucket. Did some poking
around and found out that even though all of the proper riak_search and
merge_index config was in place, the system had used innostore and not
merge_index_backend for the indexes.
So I discovered that the right thing to do was to configure the cluster using:
{storage_backend, riak_kv_multi_backend},
And that brings me to my second note. The wiki docs describe the configuration
info needed to work with riak_kv_multi_backend. An example:
{multi_backend_default, <<"bitcask">>},
{multi_backend, [
{<<"bitcask">>, riak_kv_bitcask_backend,
[{data_root, "data/bitcask"}]},
{<<"innostore">>, riak_kv_innostore_backend,
[
{data_home_dir, "data/innodb"},
{log_group_home_dir, "data/innodb"},
{buffer_pool_size, 268435456}
]}
]},
I found out that even though this info must be present, the system was not
honoring my settings for <<"innostore">>. I know this because it was creating
a different directory for the indexes in a different location than what I had
specified. I still had to include this section (outside of the multi_backend
block):
{innostore, [
{data_home_dir, "data/innodb"}, %% Where data files go
{log_group_home_dir, "data/innodb"}, %% Where log files go
{buffer_pool_size, 268435456} %% 256MB in-memory buffer in bytes
]}
With that declaration in place, all is working well. The riak-search indexes
are correct and functioning. I can list bucket keys, and the information for
the buckets whose "backend" property is set to "innostore" (via REST interface)
is being correctly stored in the proper directory, etc.
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