mirror of
https://github.com/facebook/rocksdb.git
synced 2024-12-02 10:15:54 +00:00
cb164bfc48
Summary: The immutable memtable iterators are allocated from an arena and there is no benefit from deleting these. Also the immutable memtables themselves will continue to be in memory until the version set containing it is alive. We will not remove immutable memtable iterators over the upper bound. We now add immutable iterators to the test. Test Plan: db_tailing_iter_test.TailingIteratorTrimSeekToNext Reviewers: tnovak, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D45597
600 lines
17 KiB
C++
600 lines
17 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
//
|
|
// 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.
|
|
|
|
// Introduction of SyncPoint effectively disabled building and running this test
|
|
// in Release build.
|
|
// which is a pity, it is a good test
|
|
#if !(defined NDEBUG) || !defined(OS_WIN)
|
|
|
|
#include "db/forward_iterator.h"
|
|
#include "port/stack_trace.h"
|
|
#include "util/db_test_util.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
class DBTestTailingIterator : public DBTestBase {
|
|
public:
|
|
DBTestTailingIterator() : DBTestBase("/db_tailing_iterator_test") {}
|
|
};
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorSingle) {
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
// add a record and check that iter can see it
|
|
ASSERT_OK(db_->Put(WriteOptions(), "mirko", "fodor"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "mirko");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorKeepAdding) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 10000;
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "%016d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
iter->Seek(key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorSeekToNext) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::unique_ptr<Iterator> itern(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 1000;
|
|
for (int i = 1; i < num_records; ++i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
if (i == 1) {
|
|
itern->SeekToFirst();
|
|
} else {
|
|
itern->Next();
|
|
}
|
|
ASSERT_TRUE(itern->Valid());
|
|
ASSERT_EQ(itern->key().compare(key), 0);
|
|
}
|
|
rocksdb::SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
|
|
for (int i = 2 * num_records; i > 0; --i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorTrimSeekToNext) {
|
|
const uint64_t k20KB = 20 * 1024;
|
|
Options options;
|
|
options.write_buffer_size = k20KB;
|
|
options.max_write_buffer_number = 6;
|
|
options.min_write_buffer_number_to_merge = 5;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
char bufe[32];
|
|
snprintf(bufe, sizeof(bufe), "00b0%016d", 0);
|
|
Slice keyu(bufe, 20);
|
|
read_options.iterate_upper_bound = &keyu;
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::unique_ptr<Iterator> itern(db_->NewIterator(read_options, handles_[1]));
|
|
std::unique_ptr<Iterator> iterh(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
bool file_iters_deleted = false;
|
|
rocksdb::SyncPoint::GetInstance()->SetCallBack(
|
|
"ForwardIterator::SeekInternal:Return", [&](void* arg) {
|
|
ForwardIterator* fiter = reinterpret_cast<ForwardIterator*>(arg);
|
|
ASSERT_TRUE(!file_iters_deleted || fiter->TEST_CheckDeletedIters());
|
|
});
|
|
rocksdb::SyncPoint::GetInstance()->SetCallBack(
|
|
"ForwardIterator::Next:Return", [&](void* arg) {
|
|
ForwardIterator* fiter = reinterpret_cast<ForwardIterator*>(arg);
|
|
ASSERT_TRUE(!file_iters_deleted || fiter->TEST_CheckDeletedIters());
|
|
});
|
|
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
|
|
const int num_records = 1000;
|
|
for (int i = 1; i < num_records; ++i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
char buf3[32];
|
|
char buf4[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
snprintf(buf3, sizeof(buf1), "00b0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
Slice keyn(buf3, 20);
|
|
ASSERT_OK(Put(1, keyn, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
dbfull()->TEST_WaitForCompact();
|
|
if (i == 299) {
|
|
file_iters_deleted = true;
|
|
}
|
|
snprintf(buf4, sizeof(buf1), "00a0%016d", i * 5 / 2);
|
|
Slice target(buf4, 20);
|
|
iterh->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
for (int j = (i + 1) * 5 / 2; j < i * 5; j += 5) {
|
|
iterh->Next();
|
|
ASSERT_TRUE(iterh->Valid());
|
|
}
|
|
if (i == 299) {
|
|
file_iters_deleted = false;
|
|
}
|
|
}
|
|
|
|
file_iters_deleted = ((i > 99) && (i % 400 != 399));
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
if (i == 1) {
|
|
itern->SeekToFirst();
|
|
} else {
|
|
itern->Next();
|
|
}
|
|
ASSERT_TRUE(itern->Valid());
|
|
ASSERT_EQ(itern->key().compare(key), 0);
|
|
file_iters_deleted = false;
|
|
}
|
|
|
|
read_options.read_tier = kBlockCacheTier;
|
|
std::unique_ptr<Iterator> iteri(db_->NewIterator(read_options, handles_[1]));
|
|
char buf5[32];
|
|
snprintf(buf5, sizeof(buf5), "00a0%016d", (num_records / 2) * 5 - 2);
|
|
Slice target1(buf5, 20);
|
|
iteri->Seek(target1);
|
|
ASSERT_TRUE(iteri->Valid() || iteri->status().IsIncomplete());
|
|
|
|
for (int i = 2 * num_records; i > 0; --i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorDeletes) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
|
|
// write a single record, read it using the iterator, then delete it
|
|
ASSERT_OK(Put(1, "0test", "test"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0test");
|
|
ASSERT_OK(Delete(1, "0test"));
|
|
|
|
// write many more records
|
|
const int num_records = 10000;
|
|
std::string value(1024, 'A');
|
|
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "1%015d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
}
|
|
|
|
// force a flush to make sure that no records are read from memtable
|
|
ASSERT_OK(Flush(1));
|
|
|
|
// skip "0test"
|
|
iter->Next();
|
|
|
|
// make sure we can read all new records using the existing iterator
|
|
int count = 0;
|
|
for (; iter->Valid(); iter->Next(), ++count) ;
|
|
|
|
ASSERT_EQ(count, num_records);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorPrefixSeek) {
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip,
|
|
kSkipNoPrefix);
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.create_if_missing = true;
|
|
options.disable_auto_compactions = true;
|
|
options.prefix_extractor.reset(NewFixedPrefixTransform(2));
|
|
options.memtable_factory.reset(NewHashSkipListRepFactory(16));
|
|
DestroyAndReopen(options);
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
ASSERT_OK(Put(1, "0101", "test"));
|
|
|
|
ASSERT_OK(Flush(1));
|
|
|
|
ASSERT_OK(Put(1, "0202", "test"));
|
|
|
|
// Seek(0102) shouldn't find any records since 0202 has a different prefix
|
|
iter->Seek("0102");
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
iter->Seek("0202");
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0202");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip, 0);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorIncomplete) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.read_tier = kBlockCacheTier;
|
|
|
|
std::string key("key");
|
|
std::string value("value");
|
|
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
// we either see the entry or it's not in cache
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
|
|
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
iter->SeekToFirst();
|
|
// should still be true after compaction
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, TailingIteratorSeekToSame) {
|
|
Options options = CurrentOptions();
|
|
options.compaction_style = kCompactionStyleUniversal;
|
|
options.write_buffer_size = 1000;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
|
|
const int NROWS = 10000;
|
|
// Write rows with keys 00000, 00002, 00004 etc.
|
|
for (int i = 0; i < NROWS; ++i) {
|
|
char buf[100];
|
|
snprintf(buf, sizeof(buf), "%05d", 2*i);
|
|
std::string key(buf);
|
|
std::string value("value");
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
}
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
// Seek to 00001. We expect to find 00002.
|
|
std::string start_key = "00001";
|
|
iter->Seek(start_key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
|
|
std::string found = iter->key().ToString();
|
|
ASSERT_EQ("00002", found);
|
|
|
|
// Now seek to the same key. The iterator should remain in the same
|
|
// position.
|
|
iter->Seek(found);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(found, iter->key().ToString());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorSingle) {
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
// add a record and check that iter can see it
|
|
ASSERT_OK(db_->Put(WriteOptions(), "mirko", "fodor"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "mirko");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorKeepAdding) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 10000;
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "%016d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
iter->Seek(key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorSeekToNext) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
std::string value(1024, 'a');
|
|
|
|
const int num_records = 1000;
|
|
for (int i = 1; i < num_records; ++i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
for (int i = 2 * num_records; i > 0; --i) {
|
|
char buf1[32];
|
|
char buf2[32];
|
|
snprintf(buf1, sizeof(buf1), "00a0%016d", i * 5);
|
|
|
|
Slice key(buf1, 20);
|
|
ASSERT_OK(Put(1, key, value));
|
|
|
|
if (i % 100 == 99) {
|
|
ASSERT_OK(Flush(1));
|
|
}
|
|
|
|
snprintf(buf2, sizeof(buf2), "00a0%016d", i * 5 - 2);
|
|
Slice target(buf2, 20);
|
|
iter->Seek(target);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().compare(key), 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorDeletes) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
|
|
// write a single record, read it using the iterator, then delete it
|
|
ASSERT_OK(Put(1, "0test", "test"));
|
|
iter->SeekToFirst();
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0test");
|
|
ASSERT_OK(Delete(1, "0test"));
|
|
|
|
// write many more records
|
|
const int num_records = 10000;
|
|
std::string value(1024, 'A');
|
|
|
|
for (int i = 0; i < num_records; ++i) {
|
|
char buf[32];
|
|
snprintf(buf, sizeof(buf), "1%015d", i);
|
|
|
|
Slice key(buf, 16);
|
|
ASSERT_OK(Put(1, key, value));
|
|
}
|
|
|
|
// force a flush to make sure that no records are read from memtable
|
|
ASSERT_OK(Flush(1));
|
|
|
|
// skip "0test"
|
|
iter->Next();
|
|
|
|
// make sure we can read all new records using the existing iterator
|
|
int count = 0;
|
|
for (; iter->Valid(); iter->Next(), ++count) {
|
|
}
|
|
|
|
ASSERT_EQ(count, num_records);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorPrefixSeek) {
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip,
|
|
kSkipNoPrefix);
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.create_if_missing = true;
|
|
options.disable_auto_compactions = true;
|
|
options.prefix_extractor.reset(NewFixedPrefixTransform(2));
|
|
options.memtable_factory.reset(NewHashSkipListRepFactory(16));
|
|
DestroyAndReopen(options);
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options, handles_[1]));
|
|
ASSERT_OK(Put(1, "0101", "test"));
|
|
|
|
ASSERT_OK(Flush(1));
|
|
|
|
ASSERT_OK(Put(1, "0202", "test"));
|
|
|
|
// Seek(0102) shouldn't find any records since 0202 has a different prefix
|
|
iter->Seek("0102");
|
|
ASSERT_TRUE(!iter->Valid());
|
|
|
|
iter->Seek("0202");
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(iter->key().ToString(), "0202");
|
|
|
|
iter->Next();
|
|
ASSERT_TRUE(!iter->Valid());
|
|
XFUNC_TEST("", "dbtest_prefix", prefix_skip1, XFuncPoint::SetSkip, 0);
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorIncomplete) {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
read_options.read_tier = kBlockCacheTier;
|
|
|
|
std::string key = "key";
|
|
std::string value = "value";
|
|
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
iter->SeekToFirst();
|
|
// we either see the entry or it's not in cache
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
|
|
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
|
|
iter->SeekToFirst();
|
|
// should still be true after compaction
|
|
ASSERT_TRUE(iter->Valid() || iter->status().IsIncomplete());
|
|
}
|
|
|
|
TEST_F(DBTestTailingIterator, ManagedTailingIteratorSeekToSame) {
|
|
Options options = CurrentOptions();
|
|
options.compaction_style = kCompactionStyleUniversal;
|
|
options.write_buffer_size = 1000;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
ReadOptions read_options;
|
|
read_options.tailing = true;
|
|
read_options.managed = true;
|
|
|
|
const int NROWS = 10000;
|
|
// Write rows with keys 00000, 00002, 00004 etc.
|
|
for (int i = 0; i < NROWS; ++i) {
|
|
char buf[100];
|
|
snprintf(buf, sizeof(buf), "%05d", 2 * i);
|
|
std::string key(buf);
|
|
std::string value("value");
|
|
ASSERT_OK(db_->Put(WriteOptions(), key, value));
|
|
}
|
|
|
|
std::unique_ptr<Iterator> iter(db_->NewIterator(read_options));
|
|
// Seek to 00001. We expect to find 00002.
|
|
std::string start_key = "00001";
|
|
iter->Seek(start_key);
|
|
ASSERT_TRUE(iter->Valid());
|
|
|
|
std::string found = iter->key().ToString();
|
|
ASSERT_EQ("00002", found);
|
|
|
|
// Now seek to the same key. The iterator should remain in the same
|
|
// position.
|
|
iter->Seek(found);
|
|
ASSERT_TRUE(iter->Valid());
|
|
ASSERT_EQ(found, iter->key().ToString());
|
|
}
|
|
|
|
} // namespace rocksdb
|
|
|
|
#endif // !(defined NDEBUG) || !defined(OS_WIN)
|
|
|
|
int main(int argc, char** argv) {
|
|
#if !(defined NDEBUG) || !defined(OS_WIN)
|
|
rocksdb::port::InstallStackTraceHandler();
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|