github.com/m3db/m3@v1.5.0/src/dbnode/client/aggregate_results_accumulator_merge_test.go

// Copyright (c) 2019 Uber Technologies, Inc.
//
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// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package client

import (
	"testing"

	"github.com/m3db/m3/src/cluster/shard"
	"github.com/m3db/m3/src/dbnode/topology"
	"github.com/m3db/m3/src/dbnode/topology/testutil"
	xtime "github.com/m3db/m3/src/x/time"

	"github.com/stretchr/testify/require"
)

var (
	testAggregateTimeUnit = xtime.Millisecond
)

func TestAggregateResultsAccumulatorIdsMerge(t *testing.T) {
	// rf=3, 30 shards total; 10 shards shared between each pair
	topoMap := testutil.MustNewTopologyMap(3, map[string][]shard.Shard{
		"testhost0": testutil.ShardsRange(0, 19, shard.Available),
		"testhost1": testutil.ShardsRange(10, 29, shard.Available),
		"testhost2": append(testutil.ShardsRange(0, 9, shard.Available),
			testutil.ShardsRange(20, 29, shard.Available)...),
	})

	th := newTestFetchTaggedHelper(t)
	s := testSerieses{
		newTestSeriesWithInstance("sphere/m3-cluster-short-rep0-2"),
		newTestSeriesWithInstance("sphere/m3-cluster-short-rep0-3"),
		newTestSeriesWithInstance("sphere/m3-cluster-short-rep1-9"),
		newTestSeriesWithInstance("sphere/m3-cluster-short-rep0-11"),
		newTestSeriesWithInstance("sphere/m3-cluster-short-rep1-2"),
		newTestSeriesWithInstance("sphere/m3-cluster-short-rep2-15"),
	}
	workflow := testFetchStateWorkflow{
		t:         t,
		topoMap:   topoMap,
		level:     topology.ReadConsistencyLevelAll,
		startTime: testStartTime,
		endTime:   testEndTime,

		steps: []testFetchStateWorklowStep{
			{
				hostname:        "testhost0",
				aggregateResult: testSerieses{s[0], s[2], s[4]}.toRPCAggResult(true),
			},
			{
				hostname:        "testhost1",
				aggregateResult: testSerieses{s[1], s[3]}.toRPCAggResult(true),
			},
			{
				hostname:        "testhost2",
				aggregateResult: testSerieses{s[5]}.toRPCAggResult(true),
				expectedDone:    true,
			},
		},
	}

	accum := workflow.run()

	// not really restricting, ensuring we don't have extra results
	resultsIter, resultsMetadata, err := accum.AsAggregatedTagsIterator(1000, th.pools)
	require.NoError(t, err)
	require.True(t, resultsMetadata.Exhaustive)
	s.assertMatchesAggregatedTagsIter(t, resultsIter)
}

func TestAggregateResultsAccumulatorIdsMergeUnstrictMajority(t *testing.T) {
	// rf=3, 3 identical hosts, with same shards
	topoMap := testutil.MustNewTopologyMap(3, map[string][]shard.Shard{
		"testhost0": testutil.ShardsRange(0, 29, shard.Available),
		"testhost1": testutil.ShardsRange(0, 29, shard.Available),
		"testhost2": testutil.ShardsRange(0, 29, shard.Available),
	})

	th := newTestFetchTaggedHelper(t)
	workflow := testFetchStateWorkflow{
		t:         t,
		topoMap:   topoMap,
		level:     topology.ReadConsistencyLevelUnstrictMajority,
		startTime: testStartTime,
		endTime:   testEndTime,
		steps: []testFetchStateWorklowStep{
			{
				hostname:        "testhost0",
				aggregateResult: newTestSerieses(1, 10).toRPCAggResult(true),
			},
			{
				hostname:        "testhost1",
				aggregateResult: newTestSerieses(5, 15).toRPCAggResult(true),
				expectedDone:    true,
			},
		},
	}
	accum := workflow.run()

	resultsIter, resultsMetadata, err := accum.AsAggregatedTagsIterator(10, th.pools)
	require.NoError(t, err)
	require.False(t, resultsMetadata.Exhaustive)
	newTestSerieses(1, 15).assertMatchesLimitedAggregatedTagsIter(t, 10, resultsIter)
}

func TestAggregateResultsAccumulatorIdsMergeReportsExhaustiveCorrectly(t *testing.T) {
	// rf=3, 3 identical hosts, with same shards
	topoMap := testutil.MustNewTopologyMap(3, map[string][]shard.Shard{
		"testhost0": testutil.ShardsRange(0, 29, shard.Available),
		"testhost1": testutil.ShardsRange(0, 29, shard.Available),
		"testhost2": testutil.ShardsRange(0, 29, shard.Available),
	})

	th := newTestFetchTaggedHelper(t)
	workflow := testFetchStateWorkflow{
		t:         t,
		topoMap:   topoMap,
		level:     topology.ReadConsistencyLevelUnstrictMajority,
		startTime: testStartTime,
		endTime:   testEndTime,
		steps: []testFetchStateWorklowStep{
			{
				hostname:        "testhost0",
				aggregateResult: newTestSerieses(1, 10).toRPCAggResult(false),
			},
			{
				hostname:        "testhost1",
				aggregateResult: newTestSerieses(5, 15).toRPCAggResult(true),
				expectedDone:    true,
			},
		},
	}
	accum := workflow.run()

	resultsIter, resultsMetadata, err := accum.AsAggregatedTagsIterator(100, th.pools)
	require.NoError(t, err)
	require.False(t, resultsMetadata.Exhaustive)
	newTestSerieses(1, 15).assertMatchesAggregatedTagsIter(t, resultsIter)
}