6699c7ebe6
Slight tweak to the no-overlap optimization: only push to level 2 to reduce the amount of wasted space when the same small key range is being repeatedly overwritten. Fix for Issue 18: Avoid failure on Windows by avoiding deletion of lock file until the end of DestroyDB(). Fix for Issue 19: Disregard sequence numbers when checking for overlap in sstable ranges. This fixes issue 19: when writing the same key over and over again, we would generate a sequence of sstables that were never merged together since their sequence numbers were disjoint. Don't ignore map/unmap error checks. Miscellaneous fixes for small problems Sanjay found while diagnosing issue/9 and issue/16 (corruption_testr failures). - log::Reader reports the record type when it finds an unexpected type. - log::Reader no longer reports an error when it encounters an expected zero record regardless of the setting of the "checksum" flag. - Added a missing forward declaration. - Documented a side-effects of larger write buffer sizes (longer recovery time). git-svn-id: https://leveldb.googlecode.com/svn/trunk@37 62dab493-f737-651d-591e-8d6aee1b9529
125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
|
|
#include "db/version_set.h"
|
|
#include "util/logging.h"
|
|
#include "util/testharness.h"
|
|
#include "util/testutil.h"
|
|
|
|
namespace leveldb {
|
|
|
|
class FindFileTest {
|
|
public:
|
|
std::vector<FileMetaData*> files_;
|
|
|
|
~FindFileTest() {
|
|
for (int i = 0; i < files_.size(); i++) {
|
|
delete files_[i];
|
|
}
|
|
}
|
|
|
|
void Add(const char* smallest, const char* largest,
|
|
SequenceNumber smallest_seq = 100,
|
|
SequenceNumber largest_seq = 100) {
|
|
FileMetaData* f = new FileMetaData;
|
|
f->number = files_.size() + 1;
|
|
f->smallest = InternalKey(smallest, smallest_seq, kTypeValue);
|
|
f->largest = InternalKey(largest, largest_seq, kTypeValue);
|
|
files_.push_back(f);
|
|
}
|
|
|
|
int Find(const char* key) {
|
|
InternalKey target(key, 100, kTypeValue);
|
|
InternalKeyComparator cmp(BytewiseComparator());
|
|
return FindFile(cmp, files_, target.Encode());
|
|
}
|
|
|
|
bool Overlaps(const char* smallest, const char* largest) {
|
|
InternalKeyComparator cmp(BytewiseComparator());
|
|
return SomeFileOverlapsRange(cmp, files_, smallest, largest);
|
|
}
|
|
};
|
|
|
|
TEST(FindFileTest, Empty) {
|
|
ASSERT_EQ(0, Find("foo"));
|
|
ASSERT_TRUE(! Overlaps("a", "z"));
|
|
}
|
|
|
|
TEST(FindFileTest, Single) {
|
|
Add("p", "q");
|
|
ASSERT_EQ(0, Find("a"));
|
|
ASSERT_EQ(0, Find("p"));
|
|
ASSERT_EQ(0, Find("p1"));
|
|
ASSERT_EQ(0, Find("q"));
|
|
ASSERT_EQ(1, Find("q1"));
|
|
ASSERT_EQ(1, Find("z"));
|
|
|
|
ASSERT_TRUE(! Overlaps("a", "b"));
|
|
ASSERT_TRUE(! Overlaps("z1", "z2"));
|
|
ASSERT_TRUE(Overlaps("a", "p"));
|
|
ASSERT_TRUE(Overlaps("a", "q"));
|
|
ASSERT_TRUE(Overlaps("a", "z"));
|
|
ASSERT_TRUE(Overlaps("p", "p1"));
|
|
ASSERT_TRUE(Overlaps("p", "q"));
|
|
ASSERT_TRUE(Overlaps("p", "z"));
|
|
ASSERT_TRUE(Overlaps("p1", "p2"));
|
|
ASSERT_TRUE(Overlaps("p1", "z"));
|
|
ASSERT_TRUE(Overlaps("q", "q"));
|
|
ASSERT_TRUE(Overlaps("q", "q1"));
|
|
}
|
|
|
|
|
|
TEST(FindFileTest, Multiple) {
|
|
Add("150", "200");
|
|
Add("200", "250");
|
|
Add("300", "350");
|
|
Add("400", "450");
|
|
ASSERT_EQ(0, Find("100"));
|
|
ASSERT_EQ(0, Find("150"));
|
|
ASSERT_EQ(0, Find("151"));
|
|
ASSERT_EQ(0, Find("199"));
|
|
ASSERT_EQ(0, Find("200"));
|
|
ASSERT_EQ(1, Find("201"));
|
|
ASSERT_EQ(1, Find("249"));
|
|
ASSERT_EQ(1, Find("250"));
|
|
ASSERT_EQ(2, Find("251"));
|
|
ASSERT_EQ(2, Find("299"));
|
|
ASSERT_EQ(2, Find("300"));
|
|
ASSERT_EQ(2, Find("349"));
|
|
ASSERT_EQ(2, Find("350"));
|
|
ASSERT_EQ(3, Find("351"));
|
|
ASSERT_EQ(3, Find("400"));
|
|
ASSERT_EQ(3, Find("450"));
|
|
ASSERT_EQ(4, Find("451"));
|
|
|
|
ASSERT_TRUE(! Overlaps("100", "149"));
|
|
ASSERT_TRUE(! Overlaps("251", "299"));
|
|
ASSERT_TRUE(! Overlaps("451", "500"));
|
|
ASSERT_TRUE(! Overlaps("351", "399"));
|
|
|
|
ASSERT_TRUE(Overlaps("100", "150"));
|
|
ASSERT_TRUE(Overlaps("100", "200"));
|
|
ASSERT_TRUE(Overlaps("100", "300"));
|
|
ASSERT_TRUE(Overlaps("100", "400"));
|
|
ASSERT_TRUE(Overlaps("100", "500"));
|
|
ASSERT_TRUE(Overlaps("375", "400"));
|
|
ASSERT_TRUE(Overlaps("450", "450"));
|
|
ASSERT_TRUE(Overlaps("450", "500"));
|
|
}
|
|
|
|
TEST(FindFileTest, OverlapSequenceChecks) {
|
|
Add("200", "200", 5000, 3000);
|
|
ASSERT_TRUE(! Overlaps("199", "199"));
|
|
ASSERT_TRUE(! Overlaps("201", "300"));
|
|
ASSERT_TRUE(Overlaps("200", "200"));
|
|
ASSERT_TRUE(Overlaps("190", "200"));
|
|
ASSERT_TRUE(Overlaps("200", "210"));
|
|
}
|
|
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
return leveldb::test::RunAllTests();
|
|
}
|