mirror of
https://github.com/valitydev/riak_test.git
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76 lines
2.7 KiB
Erlang
76 lines
2.7 KiB
Erlang
%% -------------------------------------------------------------------
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%%
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%% Copyright (c) 2012 Basho Technologies, Inc.
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%%
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%% This file is provided to you under the Apache License,
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%% Version 2.0 (the "License"); you may not use this file
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%% except in compliance with the License. You may obtain
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%% a copy of the License at
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%%
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%% http://www.apache.org/licenses/LICENSE-2.0
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%%
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%% Unless required by applicable law or agreed to in writing,
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%% software distributed under the License is distributed on an
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%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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%% KIND, either express or implied. See the License for the
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%% specific language governing permissions and limitations
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%% under the License.
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%%
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%% -------------------------------------------------------------------
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%% @doc Verify some MapReduce internals.
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%%
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%% This test used to be in riak_kv's test/mapred_test.erl. It was
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%% called `compat_buffer_and_prereduce_test_'. It has been moved here
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%% to avoid the fragile setup and teardown stages that frequently
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%% broke eunit testing.
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-module(mapred_buffer_prereduce).
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-behavior(riak_test).
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-export([
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%% riak_test api
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confirm/0
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]).
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-include_lib("eunit/include/eunit.hrl").
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-define(INTS_BUCKET, <<"foonum">>).
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-define(NUM_INTS, 1000).
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confirm() ->
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Nodes = rt:build_cluster(3),
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load_test_data(Nodes),
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[ begin
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lager:info("Running test ~s (m:~p, r:~p)",
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[T, M, R]),
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test_batch(Nodes, M, R)
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end
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|| {T, M, R} <- [{"default", none, none},
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{"reduce batch 10", none,
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[{reduce_phase_batch_size, 10}]},
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{"reduce batch 0", none,
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[{reduce_phase_batch_size, 0}]},
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{"reduce only once", none,
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[reduce_phase_only_1]},
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{"predreduce batch 7",
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[do_prereduce, reduce_phase_only_1],
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[{reduce_phase_batch_size, 7}]}] ],
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pass.
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load_test_data([Node|_]) ->
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%% creates foonum/1..5 - this is what populates ?INTS_BUCKET
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lager:info("Filling INTS_BUCKET (~s)", [?INTS_BUCKET]),
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ok = rpc:call(Node, riak_kv_mrc_pipe, example_setup, [?NUM_INTS]).
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rpcmr(Node, Inputs, Query) ->
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rpc:call(Node, riak_kv_mrc_pipe, mapred, [Inputs, Query]).
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test_batch([Node|_], MapArg, ReduceArg) ->
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Spec = [{map, {modfun, riak_kv_mapreduce, map_object_value},
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MapArg, true},
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{reduce, {modfun, riak_kv_mapreduce, reduce_sum},
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ReduceArg, true}],
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{ok, [MapRs, ReduceRs]} = rpcmr(Node, ?INTS_BUCKET, Spec),
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ExpectR = (?NUM_INTS * (?NUM_INTS+1)) div 2,
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?assertEqual([ExpectR], ReduceRs),
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?assertEqual(?NUM_INTS, length(MapRs)).
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