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	* Port tsdb to use pkg/labels. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Get tests passing. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Remove useless cast. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Appease linters. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Fix review comments Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>
		
			
				
	
	
		
			876 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			876 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package index
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import (
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	"encoding/binary"
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	"fmt"
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	"math/rand"
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	"sort"
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	"testing"
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	"github.com/prometheus/prometheus/pkg/labels"
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	"github.com/prometheus/prometheus/util/testutil"
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)
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func TestMemPostings_addFor(t *testing.T) {
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	p := NewMemPostings()
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	p.m[allPostingsKey.Name] = map[string][]uint64{}
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	p.m[allPostingsKey.Name][allPostingsKey.Value] = []uint64{1, 2, 3, 4, 6, 7, 8}
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	p.addFor(5, allPostingsKey)
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	testutil.Equals(t, []uint64{1, 2, 3, 4, 5, 6, 7, 8}, p.m[allPostingsKey.Name][allPostingsKey.Value])
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}
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func TestMemPostings_ensureOrder(t *testing.T) {
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	p := NewUnorderedMemPostings()
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	p.m["a"] = map[string][]uint64{}
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	for i := 0; i < 100; i++ {
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		l := make([]uint64, 100)
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		for j := range l {
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			l[j] = rand.Uint64()
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		}
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		v := fmt.Sprintf("%d", i)
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		p.m["a"][v] = l
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	}
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	p.EnsureOrder()
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	for _, e := range p.m {
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		for _, l := range e {
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			ok := sort.SliceIsSorted(l, func(i, j int) bool {
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				return l[i] < l[j]
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			})
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			if !ok {
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				t.Fatalf("postings list %v is not sorted", l)
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			}
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		}
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	}
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}
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func TestIntersect(t *testing.T) {
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	a := newListPostings(1, 2, 3)
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	b := newListPostings(2, 3, 4)
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	var cases = []struct {
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		in []Postings
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		res Postings
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	}{
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		{
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			in:  []Postings{},
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			res: EmptyPostings(),
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		},
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		{
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			in:  []Postings{a, b, EmptyPostings()},
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			res: EmptyPostings(),
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		},
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		{
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			in:  []Postings{b, a, EmptyPostings()},
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			res: EmptyPostings(),
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		},
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		{
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			in:  []Postings{EmptyPostings(), b, a},
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			res: EmptyPostings(),
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		},
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		{
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			in:  []Postings{EmptyPostings(), a, b},
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			res: EmptyPostings(),
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		},
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		{
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			in:  []Postings{a, EmptyPostings(), b},
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			res: EmptyPostings(),
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		},
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		{
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			in:  []Postings{b, EmptyPostings(), a},
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			res: EmptyPostings(),
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		},
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		{
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			in:  []Postings{b, EmptyPostings(), a, a, b, a, a, a},
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			res: EmptyPostings(),
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		},
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		{
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			in: []Postings{
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				newListPostings(1, 2, 3, 4, 5),
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				newListPostings(6, 7, 8, 9, 10),
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			},
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			res: newListPostings(),
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		},
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		{
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			in: []Postings{
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				newListPostings(1, 2, 3, 4, 5),
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				newListPostings(4, 5, 6, 7, 8),
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			},
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			res: newListPostings(4, 5),
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		},
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		{
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			in: []Postings{
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				newListPostings(1, 2, 3, 4, 9, 10),
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				newListPostings(1, 4, 5, 6, 7, 8, 10, 11),
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			},
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			res: newListPostings(1, 4, 10),
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		},
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		{
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			in: []Postings{
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				newListPostings(1),
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				newListPostings(0, 1),
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			},
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			res: newListPostings(1),
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		},
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		{
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			in: []Postings{
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				newListPostings(1),
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			},
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			res: newListPostings(1),
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		},
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		{
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			in: []Postings{
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				newListPostings(1),
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				newListPostings(),
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			},
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			res: newListPostings(),
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		},
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		{
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			in: []Postings{
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				newListPostings(),
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				newListPostings(),
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			},
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			res: newListPostings(),
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		},
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	}
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	for _, c := range cases {
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		t.Run("", func(t *testing.T) {
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			if c.res == nil {
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				t.Fatal("intersect result expectancy cannot be nil")
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			}
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			expected, err := ExpandPostings(c.res)
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			testutil.Ok(t, err)
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			i := Intersect(c.in...)
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			if c.res == EmptyPostings() {
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				testutil.Equals(t, EmptyPostings(), i)
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				return
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			}
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			if i == EmptyPostings() {
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				t.Fatal("intersect unexpected result: EmptyPostings sentinel")
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			}
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			res, err := ExpandPostings(i)
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			testutil.Ok(t, err)
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			testutil.Equals(t, expected, res)
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		})
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	}
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}
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func TestMultiIntersect(t *testing.T) {
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	var cases = []struct {
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		p   [][]uint64
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		res []uint64
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	}{
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		{
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			p: [][]uint64{
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				{1, 2, 3, 4, 5, 6, 1000, 1001},
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				{2, 4, 5, 6, 7, 8, 999, 1001},
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				{1, 2, 5, 6, 7, 8, 1001, 1200},
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			},
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			res: []uint64{2, 5, 6, 1001},
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		},
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		// One of the reproduceable cases for:
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		// https://github.com/prometheus/prometheus/issues/2616
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		// The initialisation of intersectPostings was moving the iterator forward
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		// prematurely making us miss some postings.
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		{
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			p: [][]uint64{
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				{1, 2},
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				{1, 2},
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				{1, 2},
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				{2},
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			},
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			res: []uint64{2},
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		},
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	}
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	for _, c := range cases {
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		ps := make([]Postings, 0, len(c.p))
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		for _, postings := range c.p {
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			ps = append(ps, newListPostings(postings...))
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		}
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		res, err := ExpandPostings(Intersect(ps...))
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		testutil.Ok(t, err)
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		testutil.Equals(t, c.res, res)
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	}
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}
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func BenchmarkIntersect(t *testing.B) {
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	t.Run("LongPostings1", func(bench *testing.B) {
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		var a, b, c, d []uint64
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		for i := 0; i < 10000000; i += 2 {
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			a = append(a, uint64(i))
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		}
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		for i := 5000000; i < 5000100; i += 4 {
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			b = append(b, uint64(i))
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		}
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		for i := 5090000; i < 5090600; i += 4 {
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			b = append(b, uint64(i))
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		}
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		for i := 4990000; i < 5100000; i++ {
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			c = append(c, uint64(i))
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		}
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		for i := 4000000; i < 6000000; i++ {
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			d = append(d, uint64(i))
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		}
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		i1 := newListPostings(a...)
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		i2 := newListPostings(b...)
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		i3 := newListPostings(c...)
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		i4 := newListPostings(d...)
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		bench.ResetTimer()
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		bench.ReportAllocs()
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		for i := 0; i < bench.N; i++ {
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			if _, err := ExpandPostings(Intersect(i1, i2, i3, i4)); err != nil {
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				bench.Fatal(err)
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			}
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		}
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	})
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	t.Run("LongPostings2", func(bench *testing.B) {
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		var a, b, c, d []uint64
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		for i := 0; i < 12500000; i++ {
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			a = append(a, uint64(i))
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		}
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		for i := 7500000; i < 12500000; i++ {
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			b = append(b, uint64(i))
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		}
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		for i := 9000000; i < 20000000; i++ {
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			c = append(c, uint64(i))
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		}
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		for i := 10000000; i < 12000000; i++ {
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			d = append(d, uint64(i))
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		}
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		i1 := newListPostings(a...)
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		i2 := newListPostings(b...)
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		i3 := newListPostings(c...)
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		i4 := newListPostings(d...)
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		bench.ResetTimer()
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		bench.ReportAllocs()
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		for i := 0; i < bench.N; i++ {
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			if _, err := ExpandPostings(Intersect(i1, i2, i3, i4)); err != nil {
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				bench.Fatal(err)
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			}
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		}
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	})
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	// Many matchers(k >> n).
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	t.Run("ManyPostings", func(bench *testing.B) {
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		var its []Postings
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		// 100000 matchers(k=100000).
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		for i := 0; i < 100000; i++ {
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			var temp []uint64
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			for j := 1; j < 100; j++ {
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				temp = append(temp, uint64(j))
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			}
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			its = append(its, newListPostings(temp...))
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		}
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		bench.ResetTimer()
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		bench.ReportAllocs()
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		for i := 0; i < bench.N; i++ {
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			if _, err := ExpandPostings(Intersect(its...)); err != nil {
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				bench.Fatal(err)
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			}
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		}
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	})
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}
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func TestMultiMerge(t *testing.T) {
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	i1 := newListPostings(1, 2, 3, 4, 5, 6, 1000, 1001)
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	i2 := newListPostings(2, 4, 5, 6, 7, 8, 999, 1001)
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	i3 := newListPostings(1, 2, 5, 6, 7, 8, 1001, 1200)
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	res, err := ExpandPostings(Merge(i1, i2, i3))
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	testutil.Ok(t, err)
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	testutil.Equals(t, []uint64{1, 2, 3, 4, 5, 6, 7, 8, 999, 1000, 1001, 1200}, res)
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}
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func TestMergedPostings(t *testing.T) {
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	var cases = []struct {
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		in []Postings
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		res Postings
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	}{
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		{
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			in:  []Postings{},
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			res: EmptyPostings(),
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		},
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		{
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			in: []Postings{
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				newListPostings(),
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				newListPostings(),
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			},
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			res: EmptyPostings(),
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		},
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		{
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			in: []Postings{
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				newListPostings(),
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			},
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			res: newListPostings(),
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		},
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		{
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			in: []Postings{
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				EmptyPostings(),
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				EmptyPostings(),
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				EmptyPostings(),
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				EmptyPostings(),
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			},
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			res: EmptyPostings(),
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		},
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		{
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			in: []Postings{
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				newListPostings(1, 2, 3, 4, 5),
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				newListPostings(6, 7, 8, 9, 10),
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			},
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			res: newListPostings(1, 2, 3, 4, 5, 6, 7, 8, 9, 10),
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		},
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		{
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			in: []Postings{
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				newListPostings(1, 2, 3, 4, 5),
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				newListPostings(4, 5, 6, 7, 8),
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			},
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			res: newListPostings(1, 2, 3, 4, 5, 6, 7, 8),
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		},
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		{
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			in: []Postings{
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				newListPostings(1, 2, 3, 4, 9, 10),
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				newListPostings(1, 4, 5, 6, 7, 8, 10, 11),
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			},
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			res: newListPostings(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11),
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						|
		},
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		{
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			in: []Postings{
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				newListPostings(1, 2, 3, 4, 9, 10),
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				EmptyPostings(),
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				newListPostings(1, 4, 5, 6, 7, 8, 10, 11),
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						|
			},
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			res: newListPostings(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11),
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						|
		},
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						|
		{
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			in: []Postings{
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				newListPostings(1, 2),
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						|
				newListPostings(),
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						|
			},
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			res: newListPostings(1, 2),
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						|
		},
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						|
		{
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						|
			in: []Postings{
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						|
				newListPostings(1, 2),
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						|
				EmptyPostings(),
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						|
			},
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			res: newListPostings(1, 2),
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						|
		},
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						|
	}
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						|
	for _, c := range cases {
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						|
		t.Run("", func(t *testing.T) {
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						|
			if c.res == nil {
 | 
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				t.Fatal("merge result expectancy cannot be nil")
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						|
			}
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						|
			expected, err := ExpandPostings(c.res)
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						|
			testutil.Ok(t, err)
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						|
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						|
			m := Merge(c.in...)
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						|
 | 
						|
			if c.res == EmptyPostings() {
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						|
				testutil.Equals(t, EmptyPostings(), m)
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						|
				return
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						|
			}
 | 
						|
 | 
						|
			if m == EmptyPostings() {
 | 
						|
				t.Fatal("merge unexpected result: EmptyPostings sentinel")
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						|
			}
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			res, err := ExpandPostings(m)
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						|
			testutil.Ok(t, err)
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						|
			testutil.Equals(t, expected, res)
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						|
		})
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	}
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						|
}
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						|
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func TestMergedPostingsSeek(t *testing.T) {
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						|
	var cases = []struct {
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						|
		a, b []uint64
 | 
						|
 | 
						|
		seek    uint64
 | 
						|
		success bool
 | 
						|
		res     []uint64
 | 
						|
	}{
 | 
						|
		{
 | 
						|
			a: []uint64{2, 3, 4, 5},
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						|
			b: []uint64{6, 7, 8, 9, 10},
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						|
 | 
						|
			seek:    1,
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						|
			success: true,
 | 
						|
			res:     []uint64{2, 3, 4, 5, 6, 7, 8, 9, 10},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 5},
 | 
						|
			b: []uint64{6, 7, 8, 9, 10},
 | 
						|
 | 
						|
			seek:    2,
 | 
						|
			success: true,
 | 
						|
			res:     []uint64{2, 3, 4, 5, 6, 7, 8, 9, 10},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 5},
 | 
						|
			b: []uint64{4, 5, 6, 7, 8},
 | 
						|
 | 
						|
			seek:    9,
 | 
						|
			success: false,
 | 
						|
			res:     nil,
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 9, 10},
 | 
						|
			b: []uint64{1, 4, 5, 6, 7, 8, 10, 11},
 | 
						|
 | 
						|
			seek:    10,
 | 
						|
			success: true,
 | 
						|
			res:     []uint64{10, 11},
 | 
						|
		},
 | 
						|
	}
 | 
						|
 | 
						|
	for _, c := range cases {
 | 
						|
		a := newListPostings(c.a...)
 | 
						|
		b := newListPostings(c.b...)
 | 
						|
 | 
						|
		p := Merge(a, b)
 | 
						|
 | 
						|
		testutil.Equals(t, c.success, p.Seek(c.seek))
 | 
						|
 | 
						|
		// After Seek(), At() should be called.
 | 
						|
		if c.success {
 | 
						|
			start := p.At()
 | 
						|
			lst, err := ExpandPostings(p)
 | 
						|
			testutil.Ok(t, err)
 | 
						|
 | 
						|
			lst = append([]uint64{start}, lst...)
 | 
						|
			testutil.Equals(t, c.res, lst)
 | 
						|
		}
 | 
						|
	}
 | 
						|
}
 | 
						|
 | 
						|
func TestRemovedPostings(t *testing.T) {
 | 
						|
	var cases = []struct {
 | 
						|
		a, b []uint64
 | 
						|
		res  []uint64
 | 
						|
	}{
 | 
						|
		{
 | 
						|
			a:   nil,
 | 
						|
			b:   nil,
 | 
						|
			res: []uint64(nil),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a:   []uint64{1, 2, 3, 4},
 | 
						|
			b:   nil,
 | 
						|
			res: []uint64{1, 2, 3, 4},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a:   nil,
 | 
						|
			b:   []uint64{1, 2, 3, 4},
 | 
						|
			res: []uint64(nil),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a:   []uint64{1, 2, 3, 4, 5},
 | 
						|
			b:   []uint64{6, 7, 8, 9, 10},
 | 
						|
			res: []uint64{1, 2, 3, 4, 5},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a:   []uint64{1, 2, 3, 4, 5},
 | 
						|
			b:   []uint64{4, 5, 6, 7, 8},
 | 
						|
			res: []uint64{1, 2, 3},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a:   []uint64{1, 2, 3, 4, 9, 10},
 | 
						|
			b:   []uint64{1, 4, 5, 6, 7, 8, 10, 11},
 | 
						|
			res: []uint64{2, 3, 9},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a:   []uint64{1, 2, 3, 4, 9, 10},
 | 
						|
			b:   []uint64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11},
 | 
						|
			res: []uint64(nil),
 | 
						|
		},
 | 
						|
	}
 | 
						|
 | 
						|
	for _, c := range cases {
 | 
						|
		a := newListPostings(c.a...)
 | 
						|
		b := newListPostings(c.b...)
 | 
						|
 | 
						|
		res, err := ExpandPostings(newRemovedPostings(a, b))
 | 
						|
		testutil.Ok(t, err)
 | 
						|
		testutil.Equals(t, c.res, res)
 | 
						|
	}
 | 
						|
 | 
						|
}
 | 
						|
 | 
						|
func TestRemovedNextStackoverflow(t *testing.T) {
 | 
						|
	var full []uint64
 | 
						|
	var remove []uint64
 | 
						|
 | 
						|
	var i uint64
 | 
						|
	for i = 0; i < 1e7; i++ {
 | 
						|
		full = append(full, i)
 | 
						|
		remove = append(remove, i)
 | 
						|
	}
 | 
						|
 | 
						|
	flp := newListPostings(full...)
 | 
						|
	rlp := newListPostings(remove...)
 | 
						|
	rp := newRemovedPostings(flp, rlp)
 | 
						|
	gotElem := false
 | 
						|
	for rp.Next() {
 | 
						|
		gotElem = true
 | 
						|
	}
 | 
						|
 | 
						|
	testutil.Ok(t, rp.Err())
 | 
						|
	testutil.Assert(t, !gotElem, "")
 | 
						|
}
 | 
						|
 | 
						|
func TestRemovedPostingsSeek(t *testing.T) {
 | 
						|
	var cases = []struct {
 | 
						|
		a, b []uint64
 | 
						|
 | 
						|
		seek    uint64
 | 
						|
		success bool
 | 
						|
		res     []uint64
 | 
						|
	}{
 | 
						|
		{
 | 
						|
			a: []uint64{2, 3, 4, 5},
 | 
						|
			b: []uint64{6, 7, 8, 9, 10},
 | 
						|
 | 
						|
			seek:    1,
 | 
						|
			success: true,
 | 
						|
			res:     []uint64{2, 3, 4, 5},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 5},
 | 
						|
			b: []uint64{6, 7, 8, 9, 10},
 | 
						|
 | 
						|
			seek:    2,
 | 
						|
			success: true,
 | 
						|
			res:     []uint64{2, 3, 4, 5},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 5},
 | 
						|
			b: []uint64{4, 5, 6, 7, 8},
 | 
						|
 | 
						|
			seek:    9,
 | 
						|
			success: false,
 | 
						|
			res:     nil,
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 9, 10},
 | 
						|
			b: []uint64{1, 4, 5, 6, 7, 8, 10, 11},
 | 
						|
 | 
						|
			seek:    10,
 | 
						|
			success: false,
 | 
						|
			res:     nil,
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 9, 10},
 | 
						|
			b: []uint64{1, 4, 5, 6, 7, 8, 11},
 | 
						|
 | 
						|
			seek:    4,
 | 
						|
			success: true,
 | 
						|
			res:     []uint64{9, 10},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 9, 10},
 | 
						|
			b: []uint64{1, 4, 5, 6, 7, 8, 11},
 | 
						|
 | 
						|
			seek:    5,
 | 
						|
			success: true,
 | 
						|
			res:     []uint64{9, 10},
 | 
						|
		},
 | 
						|
		{
 | 
						|
			a: []uint64{1, 2, 3, 4, 9, 10},
 | 
						|
			b: []uint64{1, 4, 5, 6, 7, 8, 11},
 | 
						|
 | 
						|
			seek:    10,
 | 
						|
			success: true,
 | 
						|
			res:     []uint64{10},
 | 
						|
		},
 | 
						|
	}
 | 
						|
 | 
						|
	for _, c := range cases {
 | 
						|
		a := newListPostings(c.a...)
 | 
						|
		b := newListPostings(c.b...)
 | 
						|
 | 
						|
		p := newRemovedPostings(a, b)
 | 
						|
 | 
						|
		testutil.Equals(t, c.success, p.Seek(c.seek))
 | 
						|
 | 
						|
		// After Seek(), At() should be called.
 | 
						|
		if c.success {
 | 
						|
			start := p.At()
 | 
						|
			lst, err := ExpandPostings(p)
 | 
						|
			testutil.Ok(t, err)
 | 
						|
 | 
						|
			lst = append([]uint64{start}, lst...)
 | 
						|
			testutil.Equals(t, c.res, lst)
 | 
						|
		}
 | 
						|
	}
 | 
						|
}
 | 
						|
 | 
						|
func TestBigEndian(t *testing.T) {
 | 
						|
	num := 1000
 | 
						|
	// mock a list as postings
 | 
						|
	ls := make([]uint32, num)
 | 
						|
	ls[0] = 2
 | 
						|
	for i := 1; i < num; i++ {
 | 
						|
		ls[i] = ls[i-1] + uint32(rand.Int31n(25)) + 2
 | 
						|
	}
 | 
						|
 | 
						|
	beLst := make([]byte, num*4)
 | 
						|
	for i := 0; i < num; i++ {
 | 
						|
		b := beLst[i*4 : i*4+4]
 | 
						|
		binary.BigEndian.PutUint32(b, ls[i])
 | 
						|
	}
 | 
						|
 | 
						|
	t.Run("Iteration", func(t *testing.T) {
 | 
						|
		bep := newBigEndianPostings(beLst)
 | 
						|
		for i := 0; i < num; i++ {
 | 
						|
			testutil.Assert(t, bep.Next() == true, "")
 | 
						|
			testutil.Equals(t, uint64(ls[i]), bep.At())
 | 
						|
		}
 | 
						|
 | 
						|
		testutil.Assert(t, bep.Next() == false, "")
 | 
						|
		testutil.Assert(t, bep.Err() == nil, "")
 | 
						|
	})
 | 
						|
 | 
						|
	t.Run("Seek", func(t *testing.T) {
 | 
						|
		table := []struct {
 | 
						|
			seek  uint32
 | 
						|
			val   uint32
 | 
						|
			found bool
 | 
						|
		}{
 | 
						|
			{
 | 
						|
				ls[0] - 1, ls[0], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[4], ls[4], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[500] - 1, ls[500], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[600] + 1, ls[601], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[600] + 1, ls[601], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[600] + 1, ls[601], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[0], ls[601], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[600], ls[601], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[999], ls[999], true,
 | 
						|
			},
 | 
						|
			{
 | 
						|
				ls[999] + 10, ls[999], false,
 | 
						|
			},
 | 
						|
		}
 | 
						|
 | 
						|
		bep := newBigEndianPostings(beLst)
 | 
						|
 | 
						|
		for _, v := range table {
 | 
						|
			testutil.Equals(t, v.found, bep.Seek(uint64(v.seek)))
 | 
						|
			testutil.Equals(t, uint64(v.val), bep.At())
 | 
						|
			testutil.Assert(t, bep.Err() == nil, "")
 | 
						|
		}
 | 
						|
	})
 | 
						|
}
 | 
						|
 | 
						|
func TestIntersectWithMerge(t *testing.T) {
 | 
						|
	// One of the reproducible cases for:
 | 
						|
	// https://github.com/prometheus/prometheus/issues/2616
 | 
						|
	a := newListPostings(21, 22, 23, 24, 25, 30)
 | 
						|
 | 
						|
	b := Merge(
 | 
						|
		newListPostings(10, 20, 30),
 | 
						|
		newListPostings(15, 26, 30),
 | 
						|
	)
 | 
						|
 | 
						|
	p := Intersect(a, b)
 | 
						|
	res, err := ExpandPostings(p)
 | 
						|
 | 
						|
	testutil.Ok(t, err)
 | 
						|
	testutil.Equals(t, []uint64{30}, res)
 | 
						|
}
 | 
						|
 | 
						|
func TestWithoutPostings(t *testing.T) {
 | 
						|
	var cases = []struct {
 | 
						|
		base Postings
 | 
						|
		drop Postings
 | 
						|
 | 
						|
		res Postings
 | 
						|
	}{
 | 
						|
		{
 | 
						|
			base: EmptyPostings(),
 | 
						|
			drop: EmptyPostings(),
 | 
						|
 | 
						|
			res: EmptyPostings(),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			base: EmptyPostings(),
 | 
						|
			drop: newListPostings(1, 2),
 | 
						|
 | 
						|
			res: EmptyPostings(),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			base: newListPostings(1, 2),
 | 
						|
			drop: EmptyPostings(),
 | 
						|
 | 
						|
			res: newListPostings(1, 2),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			base: newListPostings(),
 | 
						|
			drop: newListPostings(),
 | 
						|
 | 
						|
			res: newListPostings(),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			base: newListPostings(1, 2, 3),
 | 
						|
			drop: newListPostings(),
 | 
						|
 | 
						|
			res: newListPostings(1, 2, 3),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			base: newListPostings(1, 2, 3),
 | 
						|
			drop: newListPostings(4, 5, 6),
 | 
						|
 | 
						|
			res: newListPostings(1, 2, 3),
 | 
						|
		},
 | 
						|
		{
 | 
						|
			base: newListPostings(1, 2, 3),
 | 
						|
			drop: newListPostings(3, 4, 5),
 | 
						|
 | 
						|
			res: newListPostings(1, 2),
 | 
						|
		},
 | 
						|
	}
 | 
						|
 | 
						|
	for _, c := range cases {
 | 
						|
		t.Run("", func(t *testing.T) {
 | 
						|
			if c.res == nil {
 | 
						|
				t.Fatal("without result expectancy cannot be nil")
 | 
						|
			}
 | 
						|
 | 
						|
			expected, err := ExpandPostings(c.res)
 | 
						|
			testutil.Ok(t, err)
 | 
						|
 | 
						|
			w := Without(c.base, c.drop)
 | 
						|
 | 
						|
			if c.res == EmptyPostings() {
 | 
						|
				testutil.Equals(t, EmptyPostings(), w)
 | 
						|
				return
 | 
						|
			}
 | 
						|
 | 
						|
			if w == EmptyPostings() {
 | 
						|
				t.Fatal("without unexpected result: EmptyPostings sentinel")
 | 
						|
			}
 | 
						|
 | 
						|
			res, err := ExpandPostings(w)
 | 
						|
			testutil.Ok(t, err)
 | 
						|
			testutil.Equals(t, expected, res)
 | 
						|
		})
 | 
						|
	}
 | 
						|
}
 | 
						|
 | 
						|
func BenchmarkPostings_Stats(b *testing.B) {
 | 
						|
	p := NewMemPostings()
 | 
						|
 | 
						|
	createPostingsLabelValues := func(name, valuePrefix string, count int) {
 | 
						|
		for n := 1; n < count; n++ {
 | 
						|
			value := fmt.Sprintf("%s-%d", valuePrefix, n)
 | 
						|
			p.Add(uint64(n), labels.FromStrings(name, value))
 | 
						|
		}
 | 
						|
 | 
						|
	}
 | 
						|
	createPostingsLabelValues("__name__", "metrics_name_can_be_very_big_and_bad", 1e3)
 | 
						|
	for i := 0; i < 20; i++ {
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("host-%d", i), "metrics_name_can_be_very_big_and_bad", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("instance-%d", i), "10.0.IP.", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("job-%d", i), "Small_Job_name", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("err-%d", i), "avg_namespace-", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("team-%d", i), "team-", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("container_name-%d", i), "pod-", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("cluster-%d", i), "newcluster-", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("uid-%d", i), "123412312312312311-", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("area-%d", i), "new_area_of_work-", 1e3)
 | 
						|
		createPostingsLabelValues(fmt.Sprintf("request_id-%d", i), "owner_name_work-", 1e3)
 | 
						|
	}
 | 
						|
	b.ResetTimer()
 | 
						|
	for n := 0; n < b.N; n++ {
 | 
						|
		p.Stats("__name__")
 | 
						|
	}
 | 
						|
 | 
						|
}
 | 
						|
 | 
						|
func TestMemPostings_Delete(t *testing.T) {
 | 
						|
	p := NewMemPostings()
 | 
						|
	p.Add(1, labels.FromStrings("lbl1", "a"))
 | 
						|
	p.Add(2, labels.FromStrings("lbl1", "b"))
 | 
						|
	p.Add(3, labels.FromStrings("lbl2", "a"))
 | 
						|
 | 
						|
	before := p.Get(allPostingsKey.Name, allPostingsKey.Value)
 | 
						|
	p.Delete(map[uint64]struct{}{
 | 
						|
		2: struct{}{},
 | 
						|
	})
 | 
						|
	after := p.Get(allPostingsKey.Name, allPostingsKey.Value)
 | 
						|
 | 
						|
	// Make sure postings gotten before the delete have the old data when
 | 
						|
	// iterated over.
 | 
						|
	expanded, err := ExpandPostings(before)
 | 
						|
	testutil.Ok(t, err)
 | 
						|
	testutil.Equals(t, []uint64{1, 2, 3}, expanded)
 | 
						|
 | 
						|
	// Make sure postings gotten after the delete have the new data when
 | 
						|
	// iterated over.
 | 
						|
	expanded, err = ExpandPostings(after)
 | 
						|
	testutil.Ok(t, err)
 | 
						|
	testutil.Equals(t, []uint64{1, 3}, expanded)
 | 
						|
 | 
						|
	deleted := p.Get("lbl1", "b")
 | 
						|
	expanded, err = ExpandPostings(deleted)
 | 
						|
	testutil.Ok(t, err)
 | 
						|
	testutil.Assert(t, 0 == len(expanded), "expected empty postings, got %v", expanded)
 | 
						|
}
 |