mirror of
https://github.com/featurebasedb/featurebase.git
synced 2026-09-05 16:15:56 +00:00
132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
// Copyright 2017 Pilosa Corp.
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//
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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 rbf_test
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import (
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"math/rand"
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"os"
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"testing"
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"github.com/pilosa/pilosa/v2/rbf"
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)
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func TestDB_Open(t *testing.T) {
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db := NewDB()
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if err := db.Open(); err != nil {
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t.Fatal(err)
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} else if err := db.Close(); err != nil {
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t.Fatal(err)
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}
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}
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func TestDB_Checkpoint(t *testing.T) {
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if testing.Short() {
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t.Skip("-short enabled, skipping")
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}
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db := MustOpenDB(t)
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defer MustCloseDB(t, db)
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// Create bitmap.
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if tx, err := db.Begin(true); err != nil {
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t.Fatal(err)
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} else if err := tx.CreateBitmap("x"); err != nil {
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t.Fatal(err)
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} else if err := tx.Commit(); err != nil {
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t.Fatal(err)
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}
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// Create a bunch of transactions to generate WAL segments.
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rand := rand.New(rand.NewSource(0))
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for i := 0; i < 1000; i++ {
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if tx, err := db.Begin(true); err != nil {
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t.Fatal(err)
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} else if _, err := tx.Add("x", rand.Uint64()); err != nil {
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t.Fatal(err)
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} else if _, err := tx.Add("x", rand.Uint64()); err != nil {
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t.Fatal(err)
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} else if err := tx.Commit(); err != nil {
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t.Fatal(err)
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}
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}
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// Ensure there is no more than two WAL segments.
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if n := len(db.WALSegments()); n > 2 {
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t.Fatalf("expected two or fewer WAL segments, got %d", n)
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}
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}
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func TestDB_Recovery(t *testing.T) {
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// Ensure a bitmap header written without a bitmap is truncated.
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t.Run("TruncPartialWALBitmap", func(t *testing.T) {
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db := MustOpenDB(t)
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defer MustCloseDB(t, db)
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a := make([]uint64, rbf.ArrayMaxSize+100)
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for i := range a {
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a[i] = uint64(i)
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}
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// Create bitmap & generate enough values to create a bitmap container.
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if tx, err := db.Begin(true); err != nil {
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t.Fatal(err)
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} else if err := tx.CreateBitmap("x"); err != nil {
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t.Fatal(err)
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} else if _, err := tx.Add("x", a...); err != nil {
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t.Fatal(err)
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} else if err := tx.Commit(); err != nil {
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t.Fatal(err)
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}
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// Add one additional bit in a second transaction.
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if tx, err := db.Begin(true); err != nil {
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t.Fatal(err)
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} else if _, err := tx.Add("x", uint64(len(a))); err != nil {
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t.Fatal(err)
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} else if err := tx.Commit(); err != nil {
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t.Fatal(err)
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}
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// Close database & truncate WAL to remove commit page & bitmap data page.
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segment := db.ActiveWALSegment()
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if err := db.Close(); err != nil {
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t.Fatal(err)
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} else if err := os.Truncate(segment.Path(), segment.Size()-(2*rbf.PageSize)); err != nil {
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t.Fatal(err)
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}
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// Reopen database.
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newDB := rbf.NewDB(db.Path)
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if err := newDB.Open(); err != nil {
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t.Fatal(err)
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}
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defer MustCloseDB(t, newDB)
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// Verify last insert was not added.
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tx, err := newDB.Begin(true)
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if err != nil {
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t.Fatal(err)
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}
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defer MustRollback(t, tx)
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if exists, err := tx.Contains("x", uint64(len(a))); exists || err != nil {
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t.Fatalf("Contains()=<%v,%#v>", exists, err)
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} else if exists, err := tx.Contains("x", uint64(len(a)-1)); !exists || err != nil {
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t.Fatalf("Contains()=<%v,%#v>", exists, err)
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} else if err := tx.Rollback(); err != nil {
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t.Fatal(err)
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}
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})
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}
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