mirror of
https://github.com/prometheus/prometheus.git
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404 lines
9.4 KiB
Go
404 lines
9.4 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 tsdb
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"github.com/go-kit/kit/log"
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"github.com/pkg/errors"
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"github.com/prometheus/tsdb/testutil"
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)
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func TestSplitByRange(t *testing.T) {
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cases := []struct {
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trange int64
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ranges [][2]int64
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output [][][2]int64
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}{
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{
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trange: 60,
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ranges: [][2]int64{{0, 10}},
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output: [][][2]int64{
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{{0, 10}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{0, 60}},
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output: [][][2]int64{
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{{0, 60}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{0, 10}, {9, 15}, {30, 60}},
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output: [][][2]int64{
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{{0, 10}, {9, 15}, {30, 60}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{70, 90}, {125, 130}, {130, 180}, {1000, 1001}},
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output: [][][2]int64{
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{{70, 90}},
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{{125, 130}, {130, 180}},
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{{1000, 1001}},
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},
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},
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// Mis-aligned or too-large blocks are ignored.
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{
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trange: 60,
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ranges: [][2]int64{{50, 70}, {70, 80}},
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output: [][][2]int64{
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{{70, 80}},
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},
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},
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{
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trange: 72,
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ranges: [][2]int64{{0, 144}, {144, 216}, {216, 288}},
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output: [][][2]int64{
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{{144, 216}},
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{{216, 288}},
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},
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},
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// Various awkward edge cases easy to hit with negative numbers.
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{
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trange: 60,
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ranges: [][2]int64{{-10, -5}},
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output: [][][2]int64{
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{{-10, -5}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{-60, -50}, {-10, -5}},
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output: [][][2]int64{
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{{-60, -50}, {-10, -5}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{-60, -50}, {-10, -5}, {0, 15}},
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output: [][][2]int64{
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{{-60, -50}, {-10, -5}},
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{{0, 15}},
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},
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},
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}
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for _, c := range cases {
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// Transform input range tuples into dirMetas.
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blocks := make([]dirMeta, 0, len(c.ranges))
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for _, r := range c.ranges {
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blocks = append(blocks, dirMeta{
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meta: &BlockMeta{
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MinTime: r[0],
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MaxTime: r[1],
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},
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})
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}
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// Transform output range tuples into dirMetas.
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exp := make([][]dirMeta, len(c.output))
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for i, group := range c.output {
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for _, r := range group {
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exp[i] = append(exp[i], dirMeta{
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meta: &BlockMeta{MinTime: r[0], MaxTime: r[1]},
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})
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}
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}
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testutil.Equals(t, exp, splitByRange(blocks, c.trange))
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}
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}
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// See https://github.com/prometheus/prometheus/issues/3064
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func TestNoPanicFor0Tombstones(t *testing.T) {
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metas := []dirMeta{
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{
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dir: "1",
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meta: &BlockMeta{
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MinTime: 0,
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MaxTime: 100,
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},
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},
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{
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dir: "2",
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meta: &BlockMeta{
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MinTime: 101,
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MaxTime: 200,
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},
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},
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}
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c, err := NewLeveledCompactor(nil, nil, []int64{50}, nil)
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testutil.Ok(t, err)
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c.plan(metas)
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}
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func TestLeveledCompactor_plan(t *testing.T) {
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// This mimicks our default ExponentialBlockRanges with min block size equals to 20.
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compactor, err := NewLeveledCompactor(nil, nil, []int64{
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20,
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60,
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180,
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540,
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1620,
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}, nil)
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testutil.Ok(t, err)
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cases := []struct {
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metas []dirMeta
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expected []string
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}{
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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},
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expected: nil,
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},
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// We should wait for four blocks of size 20 to appear before compacting.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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},
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expected: nil,
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},
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// We should wait for a next block of size 20 to appear before compacting
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// the existing ones. We have three, but we ignore the fresh one from WAl.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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},
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expected: nil,
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},
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// Block to fill the entire parent range appeared – should be compacted.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 80, nil),
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},
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expected: []string{"1", "2", "3"},
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},
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// Block for the next parent range appeared with gap with size 20. Nothing will happen in the first one
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// anymore but we ignore fresh one still, so no compaction.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 60, 80, nil),
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},
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expected: nil,
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},
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// Block for the next parent range appeared, and we have a gap with size 20 between second and third block.
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// We will not get this missed gap anymore and we should compact just these two.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 60, 80, nil),
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metaRange("4", 80, 100, nil),
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},
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expected: []string{"1", "2"},
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},
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{
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// We have 20, 20, 20, 60, 60 range blocks. "5" is marked as fresh one.
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 120, nil),
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metaRange("5", 120, 180, nil),
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},
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expected: []string{"1", "2", "3"},
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},
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{
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// We have 20, 60, 20, 60, 240 range blocks. We can compact 20 + 60 + 60.
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metas: []dirMeta{
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metaRange("2", 20, 40, nil),
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metaRange("4", 60, 120, nil),
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metaRange("5", 960, 980, nil), // Fresh one.
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metaRange("6", 120, 180, nil),
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metaRange("7", 720, 960, nil),
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},
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expected: []string{"2", "4", "6"},
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},
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// Do not select large blocks that have many tombstones when there is no fresh block.
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{
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metas: []dirMeta{
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metaRange("1", 0, 540, &BlockStats{
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NumSeries: 10,
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NumTombstones: 3,
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}),
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},
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expected: nil,
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},
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// Select large blocks that have many tombstones when fresh appears.
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{
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metas: []dirMeta{
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metaRange("1", 0, 540, &BlockStats{
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NumSeries: 10,
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NumTombstones: 3,
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}),
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metaRange("2", 540, 560, nil),
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},
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expected: []string{"1"},
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},
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// For small blocks, do not compact tombstones, even when fresh appears.
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{
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metas: []dirMeta{
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metaRange("1", 0, 60, &BlockStats{
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NumSeries: 10,
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NumTombstones: 3,
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}),
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metaRange("2", 60, 80, nil),
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},
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expected: nil,
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},
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// Regression test: we were stuck in a compact loop where we always recompacted
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// the same block when tombstones and series counts were zero.
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{
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metas: []dirMeta{
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metaRange("1", 0, 540, &BlockStats{
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NumSeries: 0,
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NumTombstones: 0,
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}),
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metaRange("2", 540, 560, nil),
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},
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expected: nil,
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},
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// Regression test: we were wrongly assuming that new block is fresh from WAL when its ULID is newest.
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// We need to actually look on max time instead.
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//
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// With previous, wrong approach "8" block was ignored, so we were wrongly compacting 5 and 7 and introducing
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// block overlaps.
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{
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metas: []dirMeta{
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metaRange("5", 0, 360, nil),
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metaRange("6", 540, 560, nil), // Fresh one.
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metaRange("7", 360, 420, nil),
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metaRange("8", 420, 540, nil),
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},
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expected: []string{"7", "8"},
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},
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}
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for _, c := range cases {
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if !t.Run("", func(t *testing.T) {
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res, err := compactor.plan(c.metas)
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testutil.Ok(t, err)
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testutil.Equals(t, c.expected, res)
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}) {
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return
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}
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}
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}
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func TestRangeWithFailedCompactionWontGetSelected(t *testing.T) {
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compactor, err := NewLeveledCompactor(nil, nil, []int64{
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20,
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60,
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240,
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720,
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2160,
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}, nil)
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testutil.Ok(t, err)
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cases := []struct {
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metas []dirMeta
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}{
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 80, nil),
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},
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},
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 60, 80, nil),
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metaRange("4", 80, 100, nil),
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},
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},
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 120, nil),
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metaRange("5", 120, 180, nil),
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metaRange("6", 180, 200, nil),
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},
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},
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}
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for _, c := range cases {
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c.metas[1].meta.Compaction.Failed = true
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res, err := compactor.plan(c.metas)
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testutil.Ok(t, err)
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testutil.Equals(t, []string(nil), res)
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}
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}
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func TestCompactionFailWillCleanUpTempDir(t *testing.T) {
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compactor, err := NewLeveledCompactor(nil, log.NewNopLogger(), []int64{
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20,
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60,
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240,
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720,
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2160,
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}, nil)
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testutil.Ok(t, err)
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tmpdir, err := ioutil.TempDir("", "test")
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testutil.Ok(t, err)
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defer os.RemoveAll(tmpdir)
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testutil.NotOk(t, compactor.write(tmpdir, &BlockMeta{}, erringBReader{}))
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_, err = os.Stat(filepath.Join(tmpdir, BlockMeta{}.ULID.String()) + ".tmp")
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testutil.Assert(t, os.IsNotExist(err), "directory is not cleaned up")
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}
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func metaRange(name string, mint, maxt int64, stats *BlockStats) dirMeta {
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meta := &BlockMeta{MinTime: mint, MaxTime: maxt}
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if stats != nil {
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meta.Stats = *stats
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}
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return dirMeta{
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dir: name,
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meta: meta,
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}
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}
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type erringBReader struct{}
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func (erringBReader) Index() (IndexReader, error) { return nil, errors.New("index") }
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func (erringBReader) Chunks() (ChunkReader, error) { return nil, errors.New("chunks") }
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func (erringBReader) Tombstones() (TombstoneReader, error) { return nil, errors.New("tombstones") }
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