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rocksdb/utilities/transactions/transaction_test.cc

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// Copyright (c) 2011-present, 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.
#ifndef ROCKSDB_LITE
#include <string>
#include "db/db_impl.h"
#include "rocksdb/db.h"
#include "rocksdb/options.h"
#include "rocksdb/utilities/transaction.h"
#include "rocksdb/utilities/transaction_db.h"
#include "table/mock_table.h"
#include "util/logging.h"
#include "util/sync_point.h"
#include "util/testharness.h"
#include "util/testutil.h"
#include "utilities/merge_operators.h"
#include "utilities/merge_operators/string_append/stringappend.h"
using std::string;
namespace rocksdb {
class TransactionTest : public testing::Test {
public:
TransactionDB* db;
string dbname;
Options options;
TransactionDBOptions txn_db_options;
TransactionTest() {
options.create_if_missing = true;
options.max_write_buffer_number = 2;
options.write_buffer_size = 4 * 1024;
options.level0_file_num_compaction_trigger = 2;
options.merge_operator = MergeOperators::CreateFromStringId("stringappend");
dbname = test::TmpDir() + "/transaction_testdb";
DestroyDB(dbname, options);
txn_db_options.transaction_lock_timeout = 0;
txn_db_options.default_lock_timeout = 0;
Status s = TransactionDB::Open(options, txn_db_options, dbname, &db);
assert(s.ok());
}
~TransactionTest() {
delete db;
DestroyDB(dbname, options);
}
Status ReOpen() {
delete db;
DestroyDB(dbname, options);
Status s = TransactionDB::Open(options, txn_db_options, dbname, &db);
return s;
}
};
TEST_F(TransactionTest, DoubleEmptyWrite) {
WriteOptions write_options;
write_options.sync = true;
write_options.disableWAL = false;
WriteBatch batch;
ASSERT_OK(db->Write(write_options, &batch));
ASSERT_OK(db->Write(write_options, &batch));
}
TEST_F(TransactionTest, SuccessTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
db->Put(write_options, Slice("foo"), Slice("bar"));
db->Put(write_options, Slice("foo2"), Slice("bar"));
Transaction* txn = db->BeginTransaction(write_options, TransactionOptions());
ASSERT_TRUE(txn);
ASSERT_EQ(0, txn->GetNumPuts());
s = txn->GetForUpdate(read_options, "foo", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar");
s = txn->Put(Slice("foo"), Slice("bar2"));
ASSERT_OK(s);
ASSERT_EQ(1, txn->GetNumPuts());
s = txn->GetForUpdate(read_options, "foo", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "foo", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
delete txn;
}
TEST_F(TransactionTest, FirstWriteTest) {
WriteOptions write_options;
// Test conflict checking against the very first write to a db.
// The transaction's snapshot will have seq 1 and the following write
// will have sequence 1.
Status s = db->Put(write_options, "A", "a");
Transaction* txn = db->BeginTransaction(write_options);
txn->SetSnapshot();
ASSERT_OK(s);
s = txn->Put("A", "b");
ASSERT_OK(s);
delete txn;
}
TEST_F(TransactionTest, FirstWriteTest2) {
WriteOptions write_options;
Transaction* txn = db->BeginTransaction(write_options);
txn->SetSnapshot();
// Test conflict checking against the very first write to a db.
// The transaction's snapshot is a seq 0 while the following write
// will have sequence 1.
Status s = db->Put(write_options, "A", "a");
ASSERT_OK(s);
s = txn->Put("A", "b");
ASSERT_TRUE(s.IsBusy());
delete txn;
}
TEST_F(TransactionTest, WriteOptionsTest) {
WriteOptions write_options;
write_options.sync = true;
write_options.disableWAL = true;
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
ASSERT_TRUE(txn->GetWriteOptions()->sync);
write_options.sync = false;
txn->SetWriteOptions(write_options);
ASSERT_FALSE(txn->GetWriteOptions()->sync);
ASSERT_TRUE(txn->GetWriteOptions()->disableWAL);
delete txn;
}
TEST_F(TransactionTest, WriteConflictTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
db->Put(write_options, "foo", "A");
db->Put(write_options, "foo2", "B");
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
s = txn->Put("foo", "A2");
ASSERT_OK(s);
s = txn->Put("foo2", "B2");
ASSERT_OK(s);
// This Put outside of a transaction will conflict with the previous write
s = db->Put(write_options, "foo", "xxx");
ASSERT_TRUE(s.IsTimedOut());
s = db->Get(read_options, "foo", &value);
ASSERT_EQ(value, "A");
s = txn->Commit();
ASSERT_OK(s);
db->Get(read_options, "foo", &value);
ASSERT_EQ(value, "A2");
db->Get(read_options, "foo2", &value);
ASSERT_EQ(value, "B2");
delete txn;
}
TEST_F(TransactionTest, WriteConflictTest2) {
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
string value;
Status s;
db->Put(write_options, "foo", "bar");
txn_options.set_snapshot = true;
Transaction* txn = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn);
// This Put outside of a transaction will conflict with a later write
s = db->Put(write_options, "foo", "barz");
ASSERT_OK(s);
s = txn->Put("foo2", "X");
ASSERT_OK(s);
s = txn->Put("foo",
"bar2"); // Conflicts with write done after snapshot taken
ASSERT_TRUE(s.IsBusy());
s = txn->Put("foo3", "Y");
ASSERT_OK(s);
s = db->Get(read_options, "foo", &value);
ASSERT_EQ(value, "barz");
ASSERT_EQ(2, txn->GetNumKeys());
s = txn->Commit();
ASSERT_OK(s); // Txn should commit, but only write foo2 and foo3
// Verify that transaction wrote foo2 and foo3 but not foo
db->Get(read_options, "foo", &value);
ASSERT_EQ(value, "barz");
db->Get(read_options, "foo2", &value);
ASSERT_EQ(value, "X");
db->Get(read_options, "foo3", &value);
ASSERT_EQ(value, "Y");
delete txn;
}
TEST_F(TransactionTest, ReadConflictTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
TransactionOptions txn_options;
string value;
Status s;
db->Put(write_options, "foo", "bar");
db->Put(write_options, "foo2", "bar");
txn_options.set_snapshot = true;
Transaction* txn = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn);
txn->SetSnapshot();
snapshot_read_options.snapshot = txn->GetSnapshot();
txn->GetForUpdate(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "bar");
// This Put outside of a transaction will conflict with the previous read
s = db->Put(write_options, "foo", "barz");
ASSERT_TRUE(s.IsTimedOut());
s = db->Get(read_options, "foo", &value);
ASSERT_EQ(value, "bar");
s = txn->Get(read_options, "foo", &value);
ASSERT_EQ(value, "bar");
s = txn->Commit();
ASSERT_OK(s);
delete txn;
}
TEST_F(TransactionTest, TxnOnlyTest) {
// Test to make sure transactions work when there are no other writes in an
// empty db.
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
s = txn->Put("x", "y");
ASSERT_OK(s);
s = txn->Commit();
ASSERT_OK(s);
delete txn;
}
TEST_F(TransactionTest, FlushTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
string value;
Status s;
db->Put(write_options, Slice("foo"), Slice("bar"));
db->Put(write_options, Slice("foo2"), Slice("bar"));
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
snapshot_read_options.snapshot = txn->GetSnapshot();
txn->GetForUpdate(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "bar");
s = txn->Put(Slice("foo"), Slice("bar2"));
ASSERT_OK(s);
txn->GetForUpdate(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "bar2");
// Put a random key so we have a memtable to flush
s = db->Put(write_options, "dummy", "dummy");
ASSERT_OK(s);
// force a memtable flush
FlushOptions flush_ops;
db->Flush(flush_ops);
s = txn->Commit();
// txn should commit since the flushed table is still in MemtableList History
ASSERT_OK(s);
db->Get(read_options, "foo", &value);
ASSERT_EQ(value, "bar2");
delete txn;
}
TEST_F(TransactionTest, FlushTest2) {
const size_t num_tests = 3;
for (size_t n = 0; n < num_tests; n++) {
// Test different table factories
switch (n) {
case 0:
break;
case 1:
options.table_factory.reset(new mock::MockTableFactory());
break;
case 2: {
PlainTableOptions pt_opts;
pt_opts.hash_table_ratio = 0;
options.table_factory.reset(NewPlainTableFactory(pt_opts));
break;
}
}
Status s = ReOpen();
ASSERT_OK(s);
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
TransactionOptions txn_options;
string value;
DBImpl* db_impl = reinterpret_cast<DBImpl*>(db->GetBaseDB());
db->Put(write_options, Slice("foo"), Slice("bar"));
db->Put(write_options, Slice("foo2"), Slice("bar2"));
db->Put(write_options, Slice("foo3"), Slice("bar3"));
txn_options.set_snapshot = true;
Transaction* txn = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn);
snapshot_read_options.snapshot = txn->GetSnapshot();
txn->GetForUpdate(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "bar");
s = txn->Put(Slice("foo"), Slice("bar2"));
ASSERT_OK(s);
txn->GetForUpdate(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "bar2");
// verify foo is locked by txn
s = db->Delete(write_options, "foo");
ASSERT_TRUE(s.IsTimedOut());
s = db->Put(write_options, "Z", "z");
ASSERT_OK(s);
s = db->Put(write_options, "dummy", "dummy");
ASSERT_OK(s);
s = db->Put(write_options, "S", "s");
ASSERT_OK(s);
s = db->SingleDelete(write_options, "S");
ASSERT_OK(s);
s = txn->Delete("S");
// Should fail after encountering a write to S in memtable
ASSERT_TRUE(s.IsBusy());
// force a memtable flush
s = db_impl->TEST_FlushMemTable(true);
ASSERT_OK(s);
// Put a random key so we have a MemTable to flush
s = db->Put(write_options, "dummy", "dummy2");
ASSERT_OK(s);
// force a memtable flush
ASSERT_OK(db_impl->TEST_FlushMemTable(true));
s = db->Put(write_options, "dummy", "dummy3");
ASSERT_OK(s);
// force a memtable flush
// Since our test db has max_write_buffer_number=2, this flush will cause
// the first memtable to get purged from the MemtableList history.
ASSERT_OK(db_impl->TEST_FlushMemTable(true));
s = txn->Put("X", "Y");
// Should succeed after verifying there is no write to X in SST file
ASSERT_OK(s);
s = txn->Put("Z", "zz");
// Should fail after encountering a write to Z in SST file
ASSERT_TRUE(s.IsBusy());
s = txn->GetForUpdate(read_options, "foo2", &value);
// should succeed since key was written before txn started
ASSERT_OK(s);
// verify foo2 is locked by txn
s = db->Delete(write_options, "foo2");
ASSERT_TRUE(s.IsTimedOut());
s = txn->Delete("S");
// Should fail after encountering a write to S in SST file
ASSERT_TRUE(s.IsBusy());
// Write a bunch of keys to db to force a compaction
Random rnd(47);
for (int i = 0; i < 1000; i++) {
s = db->Put(write_options, std::to_string(i),
test::CompressibleString(&rnd, 0.8, 100, &value));
ASSERT_OK(s);
}
s = txn->Put("X", "yy");
// Should succeed after verifying there is no write to X in SST file
ASSERT_OK(s);
s = txn->Put("Z", "zzz");
// Should fail after encountering a write to Z in SST file
ASSERT_TRUE(s.IsBusy());
s = txn->Delete("S");
// Should fail after encountering a write to S in SST file
ASSERT_TRUE(s.IsBusy());
s = txn->GetForUpdate(read_options, "foo3", &value);
// should succeed since key was written before txn started
ASSERT_OK(s);
// verify foo3 is locked by txn
s = db->Delete(write_options, "foo3");
ASSERT_TRUE(s.IsTimedOut());
db_impl->TEST_WaitForCompact();
s = txn->Commit();
ASSERT_OK(s);
// Transaction should only write the keys that succeeded.
s = db->Get(read_options, "foo", &value);
ASSERT_EQ(value, "bar2");
s = db->Get(read_options, "X", &value);
ASSERT_OK(s);
ASSERT_EQ("yy", value);
s = db->Get(read_options, "Z", &value);
ASSERT_OK(s);
ASSERT_EQ("z", value);
delete txn;
}
}
TEST_F(TransactionTest, NoSnapshotTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
db->Put(write_options, "AAA", "bar");
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
// Modify key after transaction start
db->Put(write_options, "AAA", "bar1");
// Read and write without a snapshot
txn->GetForUpdate(read_options, "AAA", &value);
ASSERT_EQ(value, "bar1");
s = txn->Put("AAA", "bar2");
ASSERT_OK(s);
// Should commit since read/write was done after data changed
s = txn->Commit();
ASSERT_OK(s);
txn->GetForUpdate(read_options, "AAA", &value);
ASSERT_EQ(value, "bar2");
delete txn;
}
TEST_F(TransactionTest, MultipleSnapshotTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
string value;
Status s;
db->Put(write_options, "AAA", "bar");
db->Put(write_options, "BBB", "bar");
db->Put(write_options, "CCC", "bar");
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
db->Put(write_options, "AAA", "bar1");
// Read and write without a snapshot
txn->GetForUpdate(read_options, "AAA", &value);
ASSERT_EQ(value, "bar1");
s = txn->Put("AAA", "bar2");
ASSERT_OK(s);
// Modify BBB before snapshot is taken
db->Put(write_options, "BBB", "bar1");
txn->SetSnapshot();
snapshot_read_options.snapshot = txn->GetSnapshot();
// Read and write with snapshot
txn->GetForUpdate(snapshot_read_options, "BBB", &value);
ASSERT_EQ(value, "bar1");
s = txn->Put("BBB", "bar2");
ASSERT_OK(s);
db->Put(write_options, "CCC", "bar1");
// Set a new snapshot
txn->SetSnapshot();
snapshot_read_options.snapshot = txn->GetSnapshot();
// Read and write with snapshot
txn->GetForUpdate(snapshot_read_options, "CCC", &value);
ASSERT_EQ(value, "bar1");
s = txn->Put("CCC", "bar2");
ASSERT_OK(s);
s = txn->GetForUpdate(read_options, "AAA", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
s = txn->GetForUpdate(read_options, "BBB", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
s = txn->GetForUpdate(read_options, "CCC", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
s = db->Get(read_options, "AAA", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar1");
s = db->Get(read_options, "BBB", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar1");
s = db->Get(read_options, "CCC", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar1");
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "AAA", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
s = db->Get(read_options, "BBB", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
s = db->Get(read_options, "CCC", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "bar2");
// verify that we track multiple writes to the same key at different snapshots
delete txn;
txn = db->BeginTransaction(write_options);
// Potentially conflicting writes
db->Put(write_options, "ZZZ", "zzz");
db->Put(write_options, "XXX", "xxx");
txn->SetSnapshot();
TransactionOptions txn_options;
txn_options.set_snapshot = true;
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
txn2->SetSnapshot();
// This should not conflict in txn since the snapshot is later than the
// previous write (spoiler alert: it will later conflict with txn2).
s = txn->Put("ZZZ", "zzzz");
ASSERT_OK(s);
s = txn->Commit();
ASSERT_OK(s);
delete txn;
// This will conflict since the snapshot is earlier than another write to ZZZ
s = txn2->Put("ZZZ", "xxxxx");
ASSERT_TRUE(s.IsBusy());
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "ZZZ", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "zzzz");
delete txn2;
}
TEST_F(TransactionTest, ColumnFamiliesTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
TransactionOptions txn_options;
string value;
Status s;
ColumnFamilyHandle *cfa, *cfb;
ColumnFamilyOptions cf_options;
// Create 2 new column families
s = db->CreateColumnFamily(cf_options, "CFA", &cfa);
ASSERT_OK(s);
s = db->CreateColumnFamily(cf_options, "CFB", &cfb);
ASSERT_OK(s);
delete cfa;
delete cfb;
delete db;
// open DB with three column families
std::vector<ColumnFamilyDescriptor> column_families;
// have to open default column family
column_families.push_back(
ColumnFamilyDescriptor(kDefaultColumnFamilyName, ColumnFamilyOptions()));
// open the new column families
column_families.push_back(
ColumnFamilyDescriptor("CFA", ColumnFamilyOptions()));
column_families.push_back(
ColumnFamilyDescriptor("CFB", ColumnFamilyOptions()));
std::vector<ColumnFamilyHandle*> handles;
s = TransactionDB::Open(options, txn_db_options, dbname, column_families,
&handles, &db);
ASSERT_OK(s);
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
txn->SetSnapshot();
snapshot_read_options.snapshot = txn->GetSnapshot();
txn_options.set_snapshot = true;
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn2);
// Write some data to the db
WriteBatch batch;
batch.Put("foo", "foo");
batch.Put(handles[1], "AAA", "bar");
batch.Put(handles[1], "AAAZZZ", "bar");
s = db->Write(write_options, &batch);
ASSERT_OK(s);
db->Delete(write_options, handles[1], "AAAZZZ");
// These keys do not conflict with existing writes since they're in
// different column families
s = txn->Delete("AAA");
ASSERT_OK(s);
s = txn->GetForUpdate(snapshot_read_options, handles[1], "foo", &value);
ASSERT_TRUE(s.IsNotFound());
Slice key_slice("AAAZZZ");
Slice value_slices[2] = {Slice("bar"), Slice("bar")};
s = txn->Put(handles[2], SliceParts(&key_slice, 1),
SliceParts(value_slices, 2));
ASSERT_OK(s);
ASSERT_EQ(3, txn->GetNumKeys());
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "AAA", &value);
ASSERT_TRUE(s.IsNotFound());
s = db->Get(read_options, handles[2], "AAAZZZ", &value);
ASSERT_EQ(value, "barbar");
Slice key_slices[3] = {Slice("AAA"), Slice("ZZ"), Slice("Z")};
Slice value_slice("barbarbar");
s = txn2->Delete(handles[2], "XXX");
ASSERT_OK(s);
s = txn2->Delete(handles[1], "XXX");
ASSERT_OK(s);
// This write will cause a conflict with the earlier batch write
s = txn2->Put(handles[1], SliceParts(key_slices, 3),
SliceParts(&value_slice, 1));
ASSERT_TRUE(s.IsBusy());
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, handles[1], "AAAZZZ", &value);
ASSERT_EQ(value, "barbar");
delete txn;
delete txn2;
txn = db->BeginTransaction(write_options, txn_options);
snapshot_read_options.snapshot = txn->GetSnapshot();
txn2 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn);
std::vector<ColumnFamilyHandle*> multiget_cfh = {handles[1], handles[2],
handles[0], handles[2]};
std::vector<Slice> multiget_keys = {"AAA", "AAAZZZ", "foo", "foo"};
std::vector<std::string> values(4);
std::vector<Status> results = txn->MultiGetForUpdate(
snapshot_read_options, multiget_cfh, multiget_keys, &values);
ASSERT_OK(results[0]);
ASSERT_OK(results[1]);
ASSERT_OK(results[2]);
ASSERT_TRUE(results[3].IsNotFound());
ASSERT_EQ(values[0], "bar");
ASSERT_EQ(values[1], "barbar");
ASSERT_EQ(values[2], "foo");
s = txn->SingleDelete(handles[2], "ZZZ");
ASSERT_OK(s);
s = txn->Put(handles[2], "ZZZ", "YYY");
ASSERT_OK(s);
s = txn->Put(handles[2], "ZZZ", "YYYY");
ASSERT_OK(s);
s = txn->Delete(handles[2], "ZZZ");
ASSERT_OK(s);
s = txn->Put(handles[2], "AAAZZZ", "barbarbar");
ASSERT_OK(s);
ASSERT_EQ(5, txn->GetNumKeys());
// Txn should commit
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, handles[2], "ZZZ", &value);
ASSERT_TRUE(s.IsNotFound());
// Put a key which will conflict with the next txn using the previous snapshot
db->Put(write_options, handles[2], "foo", "000");
results = txn2->MultiGetForUpdate(snapshot_read_options, multiget_cfh,
multiget_keys, &values);
// All results should fail since there was a conflict
ASSERT_TRUE(results[0].IsBusy());
ASSERT_TRUE(results[1].IsBusy());
ASSERT_TRUE(results[2].IsBusy());
ASSERT_TRUE(results[3].IsBusy());
s = db->Get(read_options, handles[2], "foo", &value);
ASSERT_EQ(value, "000");
s = txn2->Commit();
ASSERT_OK(s);
s = db->DropColumnFamily(handles[1]);
ASSERT_OK(s);
s = db->DropColumnFamily(handles[2]);
ASSERT_OK(s);
delete txn;
delete txn2;
for (auto handle : handles) {
delete handle;
}
}
TEST_F(TransactionTest, ColumnFamiliesTest2) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
TransactionOptions txn_options;
string value;
Status s;
ColumnFamilyHandle *one, *two;
ColumnFamilyOptions cf_options;
// Create 2 new column families
s = db->CreateColumnFamily(cf_options, "ONE", &one);
ASSERT_OK(s);
s = db->CreateColumnFamily(cf_options, "TWO", &two);
ASSERT_OK(s);
Transaction* txn1 = db->BeginTransaction(write_options);
ASSERT_TRUE(txn1);
Transaction* txn2 = db->BeginTransaction(write_options);
ASSERT_TRUE(txn2);
s = txn1->Put(one, "X", "1");
ASSERT_OK(s);
s = txn1->Put(two, "X", "2");
ASSERT_OK(s);
s = txn1->Put("X", "0");
ASSERT_OK(s);
s = txn2->Put(one, "X", "11");
ASSERT_TRUE(s.IsTimedOut());
s = txn1->Commit();
ASSERT_OK(s);
// Drop first column family
s = db->DropColumnFamily(one);
ASSERT_OK(s);
// Should fail since column family was dropped.
s = txn2->Commit();
ASSERT_OK(s);
delete txn1;
txn1 = db->BeginTransaction(write_options);
ASSERT_TRUE(txn1);
// Should fail since column family was dropped
s = txn1->Put(one, "X", "111");
ASSERT_TRUE(s.IsInvalidArgument());
s = txn1->Put(two, "X", "222");
ASSERT_OK(s);
s = txn1->Put("X", "000");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
s = db->Get(read_options, two, "X", &value);
ASSERT_OK(s);
ASSERT_EQ("222", value);
s = db->Get(read_options, "X", &value);
ASSERT_OK(s);
ASSERT_EQ("000", value);
s = db->DropColumnFamily(two);
ASSERT_OK(s);
delete txn1;
delete txn2;
delete one;
delete two;
}
TEST_F(TransactionTest, EmptyTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
s = db->Put(write_options, "aaa", "aaa");
ASSERT_OK(s);
Transaction* txn = db->BeginTransaction(write_options);
s = txn->Commit();
ASSERT_OK(s);
delete txn;
txn = db->BeginTransaction(write_options);
txn->Rollback();
delete txn;
txn = db->BeginTransaction(write_options);
s = txn->GetForUpdate(read_options, "aaa", &value);
ASSERT_EQ(value, "aaa");
s = txn->Commit();
ASSERT_OK(s);
delete txn;
txn = db->BeginTransaction(write_options);
txn->SetSnapshot();
s = txn->GetForUpdate(read_options, "aaa", &value);
ASSERT_EQ(value, "aaa");
// Conflicts with previous GetForUpdate
s = db->Put(write_options, "aaa", "xxx");
ASSERT_TRUE(s.IsTimedOut());
// transaction expired!
s = txn->Commit();
ASSERT_OK(s);
delete txn;
}
TEST_F(TransactionTest, PredicateManyPreceders) {
WriteOptions write_options;
ReadOptions read_options1, read_options2;
TransactionOptions txn_options;
string value;
Status s;
txn_options.set_snapshot = true;
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
read_options1.snapshot = txn1->GetSnapshot();
Transaction* txn2 = db->BeginTransaction(write_options);
txn2->SetSnapshot();
read_options2.snapshot = txn2->GetSnapshot();
std::vector<Slice> multiget_keys = {"1", "2", "3"};
std::vector<std::string> multiget_values;
std::vector<Status> results =
txn1->MultiGetForUpdate(read_options1, multiget_keys, &multiget_values);
ASSERT_TRUE(results[1].IsNotFound());
s = txn2->Put("2", "x"); // Conflict's with txn1's MultiGetForUpdate
ASSERT_TRUE(s.IsTimedOut());
txn2->Rollback();
multiget_values.clear();
results =
txn1->MultiGetForUpdate(read_options1, multiget_keys, &multiget_values);
ASSERT_TRUE(results[1].IsNotFound());
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
delete txn2;
txn1 = db->BeginTransaction(write_options, txn_options);
read_options1.snapshot = txn1->GetSnapshot();
txn2 = db->BeginTransaction(write_options, txn_options);
read_options2.snapshot = txn2->GetSnapshot();
s = txn1->Put("4", "x");
ASSERT_OK(s);
s = txn2->Delete("4"); // conflict
ASSERT_TRUE(s.IsTimedOut());
s = txn1->Commit();
ASSERT_OK(s);
s = txn2->GetForUpdate(read_options2, "4", &value);
ASSERT_TRUE(s.IsBusy());
txn2->Rollback();
delete txn1;
delete txn2;
}
TEST_F(TransactionTest, LostUpdate) {
WriteOptions write_options;
ReadOptions read_options, read_options1, read_options2;
TransactionOptions txn_options;
string value;
Status s;
// Test 2 transactions writing to the same key in multiple orders and
// with/without snapshots
Transaction* txn1 = db->BeginTransaction(write_options);
Transaction* txn2 = db->BeginTransaction(write_options);
s = txn1->Put("1", "1");
ASSERT_OK(s);
s = txn2->Put("1", "2"); // conflict
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Commit();
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "1", &value);
ASSERT_OK(s);
ASSERT_EQ("1", value);
delete txn1;
delete txn2;
txn_options.set_snapshot = true;
txn1 = db->BeginTransaction(write_options, txn_options);
read_options1.snapshot = txn1->GetSnapshot();
txn2 = db->BeginTransaction(write_options, txn_options);
read_options2.snapshot = txn2->GetSnapshot();
s = txn1->Put("1", "3");
ASSERT_OK(s);
s = txn2->Put("1", "4"); // conflict
ASSERT_TRUE(s.IsTimedOut());
s = txn1->Commit();
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "1", &value);
ASSERT_OK(s);
ASSERT_EQ("3", value);
delete txn1;
delete txn2;
txn1 = db->BeginTransaction(write_options, txn_options);
read_options1.snapshot = txn1->GetSnapshot();
txn2 = db->BeginTransaction(write_options, txn_options);
read_options2.snapshot = txn2->GetSnapshot();
s = txn1->Put("1", "5");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
s = txn2->Put("1", "6");
ASSERT_TRUE(s.IsBusy());
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "1", &value);
ASSERT_OK(s);
ASSERT_EQ("5", value);
delete txn1;
delete txn2;
txn1 = db->BeginTransaction(write_options, txn_options);
read_options1.snapshot = txn1->GetSnapshot();
txn2 = db->BeginTransaction(write_options, txn_options);
read_options2.snapshot = txn2->GetSnapshot();
s = txn1->Put("1", "7");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
txn2->SetSnapshot();
s = txn2->Put("1", "8");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "1", &value);
ASSERT_OK(s);
ASSERT_EQ("8", value);
delete txn1;
delete txn2;
txn1 = db->BeginTransaction(write_options);
txn2 = db->BeginTransaction(write_options);
s = txn1->Put("1", "9");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
s = txn2->Put("1", "10");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
delete txn1;
delete txn2;
s = db->Get(read_options, "1", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "10");
}
TEST_F(TransactionTest, UntrackedWrites) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
// Verify transaction rollback works for untracked keys.
Transaction* txn = db->BeginTransaction(write_options);
txn->SetSnapshot();
s = txn->PutUntracked("untracked", "0");
ASSERT_OK(s);
txn->Rollback();
s = db->Get(read_options, "untracked", &value);
ASSERT_TRUE(s.IsNotFound());
delete txn;
txn = db->BeginTransaction(write_options);
txn->SetSnapshot();
s = db->Put(write_options, "untracked", "x");
ASSERT_OK(s);
// Untracked writes should succeed even though key was written after snapshot
s = txn->PutUntracked("untracked", "1");
ASSERT_OK(s);
s = txn->MergeUntracked("untracked", "2");
ASSERT_OK(s);
s = txn->DeleteUntracked("untracked");
ASSERT_OK(s);
// Conflict
s = txn->Put("untracked", "3");
ASSERT_TRUE(s.IsBusy());
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "untracked", &value);
ASSERT_TRUE(s.IsNotFound());
delete txn;
}
TEST_F(TransactionTest, ExpiredTransaction) {
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
string value;
Status s;
// Set txn expiration timeout to 0 microseconds (expires instantly)
txn_options.expiration = 0;
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
s = txn1->Put("X", "1");
ASSERT_OK(s);
s = txn1->Put("Y", "1");
ASSERT_OK(s);
Transaction* txn2 = db->BeginTransaction(write_options);
// txn2 should be able to write to X since txn1 has expired
s = txn2->Put("X", "2");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "X", &value);
ASSERT_OK(s);
ASSERT_EQ("2", value);
s = txn1->Put("Z", "1");
ASSERT_OK(s);
// txn1 should fail to commit since it is expired
s = txn1->Commit();
ASSERT_TRUE(s.IsExpired());
s = db->Get(read_options, "Y", &value);
ASSERT_TRUE(s.IsNotFound());
s = db->Get(read_options, "Z", &value);
ASSERT_TRUE(s.IsNotFound());
delete txn1;
delete txn2;
}
TEST_F(TransactionTest, ReinitializeTest) {
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
string value;
Status s;
// Set txn expiration timeout to 0 microseconds (expires instantly)
txn_options.expiration = 0;
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
// Reinitialize transaction to no long expire
txn_options.expiration = -1;
db->BeginTransaction(write_options, txn_options, txn1);
s = txn1->Put("Z", "z");
ASSERT_OK(s);
// Should commit since not expired
s = txn1->Commit();
ASSERT_OK(s);
db->BeginTransaction(write_options, txn_options, txn1);
s = txn1->Put("Z", "zz");
ASSERT_OK(s);
// Reinitilize txn1 and verify that Z gets unlocked
db->BeginTransaction(write_options, txn_options, txn1);
Transaction* txn2 = db->BeginTransaction(write_options, txn_options, nullptr);
s = txn2->Put("Z", "zzz");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
s = db->Get(read_options, "Z", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "zzz");
// Verify snapshots get reinitialized correctly
txn1->SetSnapshot();
s = txn1->Put("Z", "zzzz");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "Z", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "zzzz");
db->BeginTransaction(write_options, txn_options, txn1);
const Snapshot* snapshot = txn1->GetSnapshot();
ASSERT_TRUE(snapshot);
txn_options.set_snapshot = true;
db->BeginTransaction(write_options, txn_options, txn1);
snapshot = txn1->GetSnapshot();
ASSERT_TRUE(snapshot);
s = txn1->Put("Z", "a");
ASSERT_OK(s);
txn1->Rollback();
s = txn1->Put("Y", "y");
ASSERT_OK(s);
txn_options.set_snapshot = false;
db->BeginTransaction(write_options, txn_options, txn1);
snapshot = txn1->GetSnapshot();
s = txn1->Put("X", "x");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "Z", &value);
ASSERT_OK(s);
ASSERT_EQ(value, "zzzz");
s = db->Get(read_options, "Y", &value);
ASSERT_TRUE(s.IsNotFound());
delete txn1;
}
TEST_F(TransactionTest, Rollback) {
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
string value;
Status s;
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
ASSERT_OK(s);
s = txn1->Put("X", "1");
ASSERT_OK(s);
Transaction* txn2 = db->BeginTransaction(write_options);
// txn2 should not be able to write to X since txn1 has it locked
s = txn2->Put("X", "2");
ASSERT_TRUE(s.IsTimedOut());
txn1->Rollback();
delete txn1;
// txn2 should now be able to write to X
s = txn2->Put("X", "3");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "X", &value);
ASSERT_OK(s);
ASSERT_EQ("3", value);
delete txn2;
}
TEST_F(TransactionTest, LockLimitTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
TransactionOptions txn_options;
string value;
Status s;
delete db;
// Open DB with a lock limit of 3
txn_db_options.max_num_locks = 3;
s = TransactionDB::Open(options, txn_db_options, dbname, &db);
ASSERT_OK(s);
// Create a txn and verify we can only lock up to 3 keys
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
s = txn->Put("X", "x");
ASSERT_OK(s);
s = txn->Put("Y", "y");
ASSERT_OK(s);
s = txn->Put("Z", "z");
ASSERT_OK(s);
// lock limit reached
s = txn->Put("W", "w");
ASSERT_TRUE(s.IsBusy());
// re-locking same key shouldn't put us over the limit
s = txn->Put("X", "xx");
ASSERT_OK(s);
s = txn->GetForUpdate(read_options, "W", &value);
ASSERT_TRUE(s.IsBusy());
s = txn->GetForUpdate(read_options, "V", &value);
ASSERT_TRUE(s.IsBusy());
// re-locking same key shouldn't put us over the limit
s = txn->GetForUpdate(read_options, "Y", &value);
ASSERT_OK(s);
ASSERT_EQ("y", value);
s = txn->Get(read_options, "W", &value);
ASSERT_TRUE(s.IsNotFound());
Transaction* txn2 = db->BeginTransaction(write_options);
ASSERT_TRUE(txn2);
// "X" currently locked
s = txn2->Put("X", "x");
ASSERT_TRUE(s.IsTimedOut());
// lock limit reached
s = txn2->Put("M", "m");
ASSERT_TRUE(s.IsBusy());
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "X", &value);
ASSERT_OK(s);
ASSERT_EQ("xx", value);
s = db->Get(read_options, "W", &value);
ASSERT_TRUE(s.IsNotFound());
// Committing txn should release its locks and allow txn2 to proceed
s = txn2->Put("X", "x2");
ASSERT_OK(s);
s = txn2->Delete("X");
ASSERT_OK(s);
s = txn2->Put("M", "m");
ASSERT_OK(s);
s = txn2->Put("Z", "z2");
ASSERT_OK(s);
// lock limit reached
s = txn2->Delete("Y");
ASSERT_TRUE(s.IsBusy());
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "Z", &value);
ASSERT_OK(s);
ASSERT_EQ("z2", value);
s = db->Get(read_options, "Y", &value);
ASSERT_OK(s);
ASSERT_EQ("y", value);
s = db->Get(read_options, "X", &value);
ASSERT_TRUE(s.IsNotFound());
delete txn;
delete txn2;
}
TEST_F(TransactionTest, IteratorTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
TransactionOptions txn_options;
string value;
Status s;
// Write some keys to the db
s = db->Put(write_options, "A", "a");
ASSERT_OK(s);
s = db->Put(write_options, "G", "g");
ASSERT_OK(s);
s = db->Put(write_options, "F", "f");
ASSERT_OK(s);
s = db->Put(write_options, "C", "c");
ASSERT_OK(s);
s = db->Put(write_options, "D", "d");
ASSERT_OK(s);
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
// Write some keys in a txn
s = txn->Put("B", "b");
ASSERT_OK(s);
s = txn->Put("H", "h");
ASSERT_OK(s);
s = txn->Delete("D");
ASSERT_OK(s);
s = txn->Put("E", "e");
ASSERT_OK(s);
txn->SetSnapshot();
const Snapshot* snapshot = txn->GetSnapshot();
// Write some keys to the db after the snapshot
s = db->Put(write_options, "BB", "xx");
ASSERT_OK(s);
s = db->Put(write_options, "C", "xx");
ASSERT_OK(s);
read_options.snapshot = snapshot;
Iterator* iter = txn->GetIterator(read_options);
ASSERT_OK(iter->status());
iter->SeekToFirst();
// Read all keys via iter and lock them all
std::string results[] = {"a", "b", "c", "e", "f", "g", "h"};
for (int i = 0; i < 7; i++) {
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ(results[i], iter->value().ToString());
s = txn->GetForUpdate(read_options, iter->key(), nullptr);
if (i == 2) {
// "C" was modified after txn's snapshot
ASSERT_TRUE(s.IsBusy());
} else {
ASSERT_OK(s);
}
iter->Next();
}
ASSERT_FALSE(iter->Valid());
iter->Seek("G");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("g", iter->value().ToString());
iter->Prev();
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("f", iter->value().ToString());
iter->Seek("D");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("e", iter->value().ToString());
iter->Seek("C");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("c", iter->value().ToString());
iter->Next();
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("e", iter->value().ToString());
iter->Seek("");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("a", iter->value().ToString());
iter->Seek("X");
ASSERT_OK(iter->status());
ASSERT_FALSE(iter->Valid());
iter->SeekToLast();
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("h", iter->value().ToString());
s = txn->Commit();
ASSERT_OK(s);
delete iter;
delete txn;
}
TEST_F(TransactionTest, DisableIndexingTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
s = txn->Put("A", "a");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a", value);
txn->DisableIndexing();
s = txn->Put("B", "b");
ASSERT_OK(s);
s = txn->Get(read_options, "B", &value);
ASSERT_TRUE(s.IsNotFound());
Iterator* iter = txn->GetIterator(read_options);
ASSERT_OK(iter->status());
iter->Seek("B");
ASSERT_OK(iter->status());
ASSERT_FALSE(iter->Valid());
s = txn->Delete("A");
s = txn->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a", value);
txn->EnableIndexing();
s = txn->Put("B", "bb");
ASSERT_OK(s);
iter->Seek("B");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("bb", iter->value().ToString());
s = txn->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_EQ("bb", value);
s = txn->Put("A", "aa");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("aa", value);
delete iter;
delete txn;
}
TEST_F(TransactionTest, SavepointTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
TransactionOptions txn_options;
string value;
Status s;
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
ASSERT_EQ(0, txn->GetNumPuts());
s = txn->RollbackToSavePoint();
ASSERT_TRUE(s.IsNotFound());
txn->SetSavePoint(); // 1
ASSERT_OK(txn->RollbackToSavePoint()); // Rollback to beginning of txn
s = txn->RollbackToSavePoint();
ASSERT_TRUE(s.IsNotFound());
s = txn->Put("B", "b");
ASSERT_OK(s);
ASSERT_EQ(1, txn->GetNumPuts());
ASSERT_EQ(0, txn->GetNumDeletes());
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_EQ("b", value);
delete txn;
txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
s = txn->Put("A", "a");
ASSERT_OK(s);
s = txn->Put("B", "bb");
ASSERT_OK(s);
s = txn->Put("C", "c");
ASSERT_OK(s);
txn->SetSavePoint(); // 2
s = txn->Delete("B");
ASSERT_OK(s);
s = txn->Put("C", "cc");
ASSERT_OK(s);
s = txn->Put("D", "d");
ASSERT_OK(s);
ASSERT_EQ(5, txn->GetNumPuts());
ASSERT_EQ(1, txn->GetNumDeletes());
ASSERT_OK(txn->RollbackToSavePoint()); // Rollback to 2
ASSERT_EQ(3, txn->GetNumPuts());
ASSERT_EQ(0, txn->GetNumDeletes());
s = txn->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a", value);
s = txn->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_EQ("bb", value);
s = txn->Get(read_options, "C", &value);
ASSERT_OK(s);
ASSERT_EQ("c", value);
s = txn->Get(read_options, "D", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Put("A", "a");
ASSERT_OK(s);
s = txn->Put("E", "e");
ASSERT_OK(s);
ASSERT_EQ(5, txn->GetNumPuts());
ASSERT_EQ(0, txn->GetNumDeletes());
// Rollback to beginning of txn
s = txn->RollbackToSavePoint();
ASSERT_TRUE(s.IsNotFound());
txn->Rollback();
ASSERT_EQ(0, txn->GetNumPuts());
ASSERT_EQ(0, txn->GetNumDeletes());
s = txn->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_EQ("b", value);
s = txn->Get(read_options, "D", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Get(read_options, "D", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Get(read_options, "E", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Put("A", "aa");
ASSERT_OK(s);
s = txn->Put("F", "f");
ASSERT_OK(s);
ASSERT_EQ(2, txn->GetNumPuts());
ASSERT_EQ(0, txn->GetNumDeletes());
txn->SetSavePoint(); // 3
txn->SetSavePoint(); // 4
s = txn->Put("G", "g");
ASSERT_OK(s);
s = txn->SingleDelete("F");
ASSERT_OK(s);
s = txn->Delete("B");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("aa", value);
s = txn->Get(read_options, "F", &value);
// According to db.h, doing a SingleDelete on a key that has been
// overwritten will have undefinied behavior. So it is unclear what the
// result of fetching "F" should be. The current implementation will
// return NotFound in this case.
ASSERT_TRUE(s.IsNotFound());
s = txn->Get(read_options, "B", &value);
ASSERT_TRUE(s.IsNotFound());
ASSERT_EQ(3, txn->GetNumPuts());
ASSERT_EQ(2, txn->GetNumDeletes());
ASSERT_OK(txn->RollbackToSavePoint()); // Rollback to 3
ASSERT_EQ(2, txn->GetNumPuts());
ASSERT_EQ(0, txn->GetNumDeletes());
s = txn->Get(read_options, "F", &value);
ASSERT_OK(s);
ASSERT_EQ("f", value);
s = txn->Get(read_options, "G", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "F", &value);
ASSERT_OK(s);
ASSERT_EQ("f", value);
s = db->Get(read_options, "G", &value);
ASSERT_TRUE(s.IsNotFound());
s = db->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("aa", value);
s = db->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_EQ("b", value);
s = db->Get(read_options, "C", &value);
ASSERT_TRUE(s.IsNotFound());
s = db->Get(read_options, "D", &value);
ASSERT_TRUE(s.IsNotFound());
s = db->Get(read_options, "E", &value);
ASSERT_TRUE(s.IsNotFound());
delete txn;
}
TEST_F(TransactionTest, SavepointTest2) {
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
Status s;
txn_options.lock_timeout = 1; // 1 ms
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn1);
s = txn1->Put("A", "");
ASSERT_OK(s);
txn1->SetSavePoint(); // 1
s = txn1->Put("A", "a");
ASSERT_OK(s);
s = txn1->Put("C", "c");
ASSERT_OK(s);
txn1->SetSavePoint(); // 2
s = txn1->Put("A", "a");
ASSERT_OK(s);
s = txn1->Put("B", "b");
ASSERT_OK(s);
ASSERT_OK(txn1->RollbackToSavePoint()); // Rollback to 2
// Verify that "A" and "C" is still locked while "B" is not
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn2);
s = txn2->Put("A", "a2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b2");
ASSERT_OK(s);
s = txn1->Put("A", "aa");
ASSERT_OK(s);
s = txn1->Put("B", "bb");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
s = txn1->Put("A", "aaa");
ASSERT_OK(s);
s = txn1->Put("B", "bbb");
ASSERT_OK(s);
s = txn1->Put("C", "ccc");
ASSERT_OK(s);
txn1->SetSavePoint(); // 3
ASSERT_OK(txn1->RollbackToSavePoint()); // Rollback to 3
// Verify that "A", "B", "C" are still locked
txn2 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn2);
s = txn2->Put("A", "a2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c2");
ASSERT_TRUE(s.IsTimedOut());
ASSERT_OK(txn1->RollbackToSavePoint()); // Rollback to 1
// Verify that only "A" is locked
s = txn2->Put("A", "a3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b3");
ASSERT_OK(s);
s = txn2->Put("C", "c3po");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
// Verify "A" "C" "B" are no longer locked
s = txn2->Put("A", "a4");
ASSERT_OK(s);
s = txn2->Put("B", "b4");
ASSERT_OK(s);
s = txn2->Put("C", "c4");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
}
TEST_F(TransactionTest, UndoGetForUpdateTest) {
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
string value;
Status s;
txn_options.lock_timeout = 1; // 1 ms
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn1);
txn1->UndoGetForUpdate("A");
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
txn1 = db->BeginTransaction(write_options, txn_options);
txn1->UndoGetForUpdate("A");
s = txn1->GetForUpdate(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
// Verify that A is locked
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
s = txn2->Put("A", "a");
ASSERT_TRUE(s.IsTimedOut());
txn1->UndoGetForUpdate("A");
// Verify that A is now unlocked
s = txn2->Put("A", "a2");
ASSERT_OK(s);
txn2->Commit();
delete txn2;
s = db->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a2", value);
s = txn1->Delete("A");
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn1->Put("B", "b3");
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "B", &value);
ASSERT_OK(s);
txn1->UndoGetForUpdate("A");
txn1->UndoGetForUpdate("B");
// Verify that A and B are still locked
txn2 = db->BeginTransaction(write_options, txn_options);
s = txn2->Put("A", "a4");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b4");
ASSERT_TRUE(s.IsTimedOut());
txn1->Rollback();
delete txn1;
// Verify that A and B are no longer locked
s = txn2->Put("A", "a5");
ASSERT_OK(s);
s = txn2->Put("B", "b5");
ASSERT_OK(s);
s = txn2->Commit();
delete txn2;
ASSERT_OK(s);
txn1 = db->BeginTransaction(write_options, txn_options);
s = txn1->GetForUpdate(read_options, "A", &value);
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "A", &value);
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "C", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn1->GetForUpdate(read_options, "A", &value);
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "C", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn1->GetForUpdate(read_options, "B", &value);
ASSERT_OK(s);
s = txn1->Put("B", "b5");
s = txn1->GetForUpdate(read_options, "B", &value);
ASSERT_OK(s);
txn1->UndoGetForUpdate("A");
txn1->UndoGetForUpdate("B");
txn1->UndoGetForUpdate("C");
txn1->UndoGetForUpdate("X");
// Verify A,B,C are locked
txn2 = db->BeginTransaction(write_options, txn_options);
s = txn2->Put("A", "a6");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Delete("B");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c6");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("X", "x6");
ASSERT_OK(s);
txn1->UndoGetForUpdate("A");
txn1->UndoGetForUpdate("B");
txn1->UndoGetForUpdate("C");
txn1->UndoGetForUpdate("X");
// Verify A,B are locked and C is not
s = txn2->Put("A", "a6");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Delete("B");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c6");
ASSERT_OK(s);
s = txn2->Put("X", "x6");
ASSERT_OK(s);
txn1->UndoGetForUpdate("A");
txn1->UndoGetForUpdate("B");
txn1->UndoGetForUpdate("C");
txn1->UndoGetForUpdate("X");
// Verify B is locked and A and C are not
s = txn2->Put("A", "a7");
ASSERT_OK(s);
s = txn2->Delete("B");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c7");
ASSERT_OK(s);
s = txn2->Put("X", "x7");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
}
TEST_F(TransactionTest, UndoGetForUpdateTest2) {
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
string value;
Status s;
s = db->Put(write_options, "A", "");
ASSERT_OK(s);
txn_options.lock_timeout = 1; // 1 ms
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn1);
s = txn1->GetForUpdate(read_options, "A", &value);
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "B", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn1->Put("F", "f");
ASSERT_OK(s);
txn1->SetSavePoint(); // 1
txn1->UndoGetForUpdate("A");
s = txn1->GetForUpdate(read_options, "C", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn1->GetForUpdate(read_options, "D", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn1->Put("E", "e");
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "E", &value);
ASSERT_OK(s);
s = txn1->GetForUpdate(read_options, "F", &value);
ASSERT_OK(s);
// Verify A,B,C,D,E,F are still locked
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
s = txn2->Put("A", "a1");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b1");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c1");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("D", "d1");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("E", "e1");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("F", "f1");
ASSERT_TRUE(s.IsTimedOut());
txn1->UndoGetForUpdate("C");
txn1->UndoGetForUpdate("E");
// Verify A,B,D,E,F are still locked and C is not.
s = txn2->Put("A", "a2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("D", "d2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("E", "e2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("F", "f2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c2");
ASSERT_OK(s);
txn1->SetSavePoint(); // 2
s = txn1->Put("H", "h");
ASSERT_OK(s);
txn1->UndoGetForUpdate("A");
txn1->UndoGetForUpdate("B");
txn1->UndoGetForUpdate("C");
txn1->UndoGetForUpdate("D");
txn1->UndoGetForUpdate("E");
txn1->UndoGetForUpdate("F");
txn1->UndoGetForUpdate("G");
txn1->UndoGetForUpdate("H");
// Verify A,B,D,E,F,H are still locked and C,G are not.
s = txn2->Put("A", "a3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("D", "d3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("E", "e3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("F", "f3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("H", "h3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c3");
ASSERT_OK(s);
s = txn2->Put("G", "g3");
ASSERT_OK(s);
txn1->RollbackToSavePoint(); // rollback to 2
// Verify A,B,D,E,F are still locked and C,G,H are not.
s = txn2->Put("A", "a3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("D", "d3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("E", "e3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("F", "f3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c3");
ASSERT_OK(s);
s = txn2->Put("G", "g3");
ASSERT_OK(s);
s = txn2->Put("H", "h3");
ASSERT_OK(s);
txn1->UndoGetForUpdate("A");
txn1->UndoGetForUpdate("B");
txn1->UndoGetForUpdate("C");
txn1->UndoGetForUpdate("D");
txn1->UndoGetForUpdate("E");
txn1->UndoGetForUpdate("F");
txn1->UndoGetForUpdate("G");
txn1->UndoGetForUpdate("H");
// Verify A,B,E,F are still locked and C,D,G,H are not.
s = txn2->Put("A", "a3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("E", "e3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("F", "f3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c3");
ASSERT_OK(s);
s = txn2->Put("D", "d3");
ASSERT_OK(s);
s = txn2->Put("G", "g3");
ASSERT_OK(s);
s = txn2->Put("H", "h3");
ASSERT_OK(s);
txn1->RollbackToSavePoint(); // rollback to 1
// Verify A,B,F are still locked and C,D,E,G,H are not.
s = txn2->Put("A", "a3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("B", "b3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("F", "f3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("C", "c3");
ASSERT_OK(s);
s = txn2->Put("D", "d3");
ASSERT_OK(s);
s = txn2->Put("E", "e3");
ASSERT_OK(s);
s = txn2->Put("G", "g3");
ASSERT_OK(s);
s = txn2->Put("H", "h3");
ASSERT_OK(s);
txn1->UndoGetForUpdate("A");
txn1->UndoGetForUpdate("B");
txn1->UndoGetForUpdate("C");
txn1->UndoGetForUpdate("D");
txn1->UndoGetForUpdate("E");
txn1->UndoGetForUpdate("F");
txn1->UndoGetForUpdate("G");
txn1->UndoGetForUpdate("H");
// Verify F is still locked and A,B,C,D,E,G,H are not.
s = txn2->Put("F", "f3");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Put("A", "a3");
ASSERT_OK(s);
s = txn2->Put("B", "b3");
ASSERT_OK(s);
s = txn2->Put("C", "c3");
ASSERT_OK(s);
s = txn2->Put("D", "d3");
ASSERT_OK(s);
s = txn2->Put("E", "e3");
ASSERT_OK(s);
s = txn2->Put("G", "g3");
ASSERT_OK(s);
s = txn2->Put("H", "h3");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
delete txn1;
delete txn2;
}
TEST_F(TransactionTest, TimeoutTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
delete db;
// transaction writes have an infinite timeout,
// but we will override this when we start a txn
// db writes have infinite timeout
txn_db_options.transaction_lock_timeout = -1;
txn_db_options.default_lock_timeout = -1;
s = TransactionDB::Open(options, txn_db_options, dbname, &db);
ASSERT_OK(s);
s = db->Put(write_options, "aaa", "aaa");
ASSERT_OK(s);
TransactionOptions txn_options0;
txn_options0.expiration = 100; // 100ms
txn_options0.lock_timeout = 50; // txn timeout no longer infinite
Transaction* txn1 = db->BeginTransaction(write_options, txn_options0);
s = txn1->GetForUpdate(read_options, "aaa", nullptr);
ASSERT_OK(s);
// Conflicts with previous GetForUpdate.
// Since db writes do not have a timeout, this should eventually succeed when
// the transaction expires.
s = db->Put(write_options, "aaa", "xxx");
ASSERT_OK(s);
ASSERT_GE(txn1->GetElapsedTime(),
static_cast<uint64_t>(txn_options0.expiration));
s = txn1->Commit();
ASSERT_TRUE(s.IsExpired()); // expired!
s = db->Get(read_options, "aaa", &value);
ASSERT_OK(s);
ASSERT_EQ("xxx", value);
delete txn1;
delete db;
// transaction writes have 10ms timeout,
// db writes have infinite timeout
txn_db_options.transaction_lock_timeout = 50;
txn_db_options.default_lock_timeout = -1;
s = TransactionDB::Open(options, txn_db_options, dbname, &db);
ASSERT_OK(s);
s = db->Put(write_options, "aaa", "aaa");
ASSERT_OK(s);
TransactionOptions txn_options;
txn_options.expiration = 100; // 100ms
txn1 = db->BeginTransaction(write_options, txn_options);
s = txn1->GetForUpdate(read_options, "aaa", nullptr);
ASSERT_OK(s);
// Conflicts with previous GetForUpdate.
// Since db writes do not have a timeout, this should eventually succeed when
// the transaction expires.
s = db->Put(write_options, "aaa", "xxx");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_NOK(s); // expired!
s = db->Get(read_options, "aaa", &value);
ASSERT_OK(s);
ASSERT_EQ("xxx", value);
delete txn1;
txn_options.expiration = 6000000; // 100 minutes
txn_options.lock_timeout = 1; // 1ms
txn1 = db->BeginTransaction(write_options, txn_options);
txn1->SetLockTimeout(100);
TransactionOptions txn_options2;
txn_options2.expiration = 10; // 10ms
Transaction* txn2 = db->BeginTransaction(write_options, txn_options2);
ASSERT_OK(s);
s = txn2->Put("a", "2");
ASSERT_OK(s);
// txn1 has a lock timeout longer than txn2's expiration, so it will win
s = txn1->Delete("a");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
// txn2 should be expired out since txn1 waiting until its timeout expired.
s = txn2->Commit();
ASSERT_TRUE(s.IsExpired());
delete txn1;
delete txn2;
txn_options.expiration = 6000000; // 100 minutes
txn1 = db->BeginTransaction(write_options, txn_options);
txn_options2.expiration = 100000000;
txn2 = db->BeginTransaction(write_options, txn_options2);
s = txn1->Delete("asdf");
ASSERT_OK(s);
// txn2 has a smaller lock timeout than txn1's expiration, so it will time out
s = txn2->Delete("asdf");
ASSERT_TRUE(s.IsTimedOut());
ASSERT_EQ(s.ToString(), "Operation timed out: Timeout waiting to lock key");
s = txn1->Commit();
ASSERT_OK(s);
s = txn2->Put("asdf", "asdf");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
s = db->Get(read_options, "asdf", &value);
ASSERT_OK(s);
ASSERT_EQ("asdf", value);
delete txn1;
delete txn2;
}
TEST_F(TransactionTest, SingleDeleteTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
s = txn->SingleDelete("A");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Commit();
ASSERT_OK(s);
delete txn;
txn = db->BeginTransaction(write_options);
s = txn->SingleDelete("A");
ASSERT_OK(s);
s = txn->Put("A", "a");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a", value);
s = txn->Commit();
ASSERT_OK(s);
delete txn;
s = db->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a", value);
txn = db->BeginTransaction(write_options);
s = txn->SingleDelete("A");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn->Commit();
ASSERT_OK(s);
delete txn;
s = db->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
txn = db->BeginTransaction(write_options);
Transaction* txn2 = db->BeginTransaction(write_options);
txn2->SetSnapshot();
s = txn->Put("A", "a");
ASSERT_OK(s);
s = txn->Put("A", "a2");
ASSERT_OK(s);
s = txn->SingleDelete("A");
ASSERT_OK(s);
s = txn->SingleDelete("B");
ASSERT_OK(s);
// According to db.h, doing a SingleDelete on a key that has been
// overwritten will have undefinied behavior. So it is unclear what the
// result of fetching "A" should be. The current implementation will
// return NotFound in this case.
s = txn->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
s = txn2->Put("B", "b");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
s = txn->Commit();
ASSERT_OK(s);
delete txn;
// According to db.h, doing a SingleDelete on a key that has been
// overwritten will have undefinied behavior. So it is unclear what the
// result of fetching "A" should be. The current implementation will
// return NotFound in this case.
s = db->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsNotFound());
s = db->Get(read_options, "B", &value);
ASSERT_TRUE(s.IsNotFound());
}
TEST_F(TransactionTest, MergeTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
Transaction* txn = db->BeginTransaction(write_options, TransactionOptions());
ASSERT_TRUE(txn);
s = db->Put(write_options, "A", "a0");
ASSERT_OK(s);
s = txn->Merge("A", "1");
ASSERT_OK(s);
s = txn->Merge("A", "2");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsMergeInProgress());
s = txn->Put("A", "a");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a", value);
s = txn->Merge("A", "3");
ASSERT_OK(s);
s = txn->Get(read_options, "A", &value);
ASSERT_TRUE(s.IsMergeInProgress());
TransactionOptions txn_options;
txn_options.lock_timeout = 1; // 1 ms
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn2);
// verify that txn has "A" locked
s = txn2->Merge("A", "4");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
s = txn->Commit();
ASSERT_OK(s);
delete txn;
s = db->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a,3", value);
}
TEST_F(TransactionTest, DeferSnapshotTest) {
WriteOptions write_options;
ReadOptions read_options;
string value;
Status s;
s = db->Put(write_options, "A", "a0");
ASSERT_OK(s);
Transaction* txn1 = db->BeginTransaction(write_options);
Transaction* txn2 = db->BeginTransaction(write_options);
txn1->SetSnapshotOnNextOperation();
auto snapshot = txn1->GetSnapshot();
ASSERT_FALSE(snapshot);
s = txn2->Put("A", "a2");
ASSERT_OK(s);
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
s = txn1->GetForUpdate(read_options, "A", &value);
// Should not conflict with txn2 since snapshot wasn't set until
// GetForUpdate was called.
ASSERT_OK(s);
ASSERT_EQ("a2", value);
s = txn1->Put("A", "a1");
ASSERT_OK(s);
s = db->Put(write_options, "B", "b0");
ASSERT_OK(s);
// Cannot lock B since it was written after the snapshot was set
s = txn1->Put("B", "b1");
ASSERT_TRUE(s.IsBusy());
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
s = db->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a1", value);
s = db->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_EQ("b0", value);
}
TEST_F(TransactionTest, DeferSnapshotTest2) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
string value;
Status s;
Transaction* txn1 = db->BeginTransaction(write_options);
txn1->SetSnapshot();
s = txn1->Put("A", "a1");
ASSERT_OK(s);
s = db->Put(write_options, "C", "c0");
ASSERT_OK(s);
s = db->Put(write_options, "D", "d0");
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
txn1->SetSnapshotOnNextOperation();
s = txn1->Get(snapshot_read_options, "C", &value);
// Snapshot was set before C was written
ASSERT_TRUE(s.IsNotFound());
s = txn1->Get(snapshot_read_options, "D", &value);
// Snapshot was set before D was written
ASSERT_TRUE(s.IsNotFound());
// Snapshot should not have changed yet.
snapshot_read_options.snapshot = txn1->GetSnapshot();
s = txn1->Get(snapshot_read_options, "C", &value);
// Snapshot was set before C was written
ASSERT_TRUE(s.IsNotFound());
s = txn1->Get(snapshot_read_options, "D", &value);
// Snapshot was set before D was written
ASSERT_TRUE(s.IsNotFound());
s = txn1->GetForUpdate(read_options, "C", &value);
ASSERT_OK(s);
ASSERT_EQ("c0", value);
s = db->Put(write_options, "D", "d00");
ASSERT_OK(s);
// Snapshot is now set
snapshot_read_options.snapshot = txn1->GetSnapshot();
s = txn1->Get(snapshot_read_options, "D", &value);
ASSERT_OK(s);
ASSERT_EQ("d0", value);
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
}
TEST_F(TransactionTest, DeferSnapshotSavePointTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
string value;
Status s;
Transaction* txn1 = db->BeginTransaction(write_options);
txn1->SetSavePoint(); // 1
s = db->Put(write_options, "T", "1");
ASSERT_OK(s);
txn1->SetSnapshotOnNextOperation();
s = db->Put(write_options, "T", "2");
ASSERT_OK(s);
txn1->SetSavePoint(); // 2
s = db->Put(write_options, "T", "3");
ASSERT_OK(s);
s = txn1->Put("A", "a");
ASSERT_OK(s);
txn1->SetSavePoint(); // 3
s = db->Put(write_options, "T", "4");
ASSERT_OK(s);
txn1->SetSnapshot();
txn1->SetSnapshotOnNextOperation();
txn1->SetSavePoint(); // 4
s = db->Put(write_options, "T", "5");
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
s = txn1->Get(snapshot_read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("4", value);
s = txn1->Put("A", "a1");
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
s = txn1->Get(snapshot_read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("5", value);
s = txn1->RollbackToSavePoint(); // Rollback to 4
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
s = txn1->Get(snapshot_read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("4", value);
s = txn1->RollbackToSavePoint(); // Rollback to 3
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
s = txn1->Get(snapshot_read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("3", value);
s = txn1->Get(read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("5", value);
s = txn1->RollbackToSavePoint(); // Rollback to 2
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
ASSERT_FALSE(snapshot_read_options.snapshot);
s = txn1->Get(snapshot_read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("5", value);
s = txn1->Delete("A");
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
ASSERT_TRUE(snapshot_read_options.snapshot);
s = txn1->Get(snapshot_read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("5", value);
s = txn1->RollbackToSavePoint(); // Rollback to 1
ASSERT_OK(s);
s = txn1->Delete("A");
ASSERT_OK(s);
snapshot_read_options.snapshot = txn1->GetSnapshot();
ASSERT_FALSE(snapshot_read_options.snapshot);
s = txn1->Get(snapshot_read_options, "T", &value);
ASSERT_OK(s);
ASSERT_EQ("5", value);
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
}
TEST_F(TransactionTest, SetSnapshotOnNextOperationWithNotification) {
WriteOptions write_options;
ReadOptions read_options;
string value;
class Notifier : public TransactionNotifier {
private:
const Snapshot** snapshot_ptr_;
public:
explicit Notifier(const Snapshot** snapshot_ptr)
: snapshot_ptr_(snapshot_ptr) {}
void SnapshotCreated(const Snapshot* newSnapshot) {
*snapshot_ptr_ = newSnapshot;
}
};
std::shared_ptr<Notifier> notifier =
std::make_shared<Notifier>(&read_options.snapshot);
Status s;
s = db->Put(write_options, "B", "0");
ASSERT_OK(s);
Transaction* txn1 = db->BeginTransaction(write_options);
txn1->SetSnapshotOnNextOperation(notifier);
ASSERT_FALSE(read_options.snapshot);
s = db->Put(write_options, "B", "1");
ASSERT_OK(s);
// A Get does not generate the snapshot
s = txn1->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_FALSE(read_options.snapshot);
ASSERT_EQ(value, "1");
// Any other operation does
s = txn1->Put("A", "0");
ASSERT_OK(s);
// Now change "B".
s = db->Put(write_options, "B", "2");
ASSERT_OK(s);
// The original value should still be read
s = txn1->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_TRUE(read_options.snapshot);
ASSERT_EQ(value, "1");
s = txn1->Commit();
ASSERT_OK(s);
delete txn1;
}
TEST_F(TransactionTest, ClearSnapshotTest) {
WriteOptions write_options;
ReadOptions read_options, snapshot_read_options;
string value;
Status s;
s = db->Put(write_options, "foo", "0");
ASSERT_OK(s);
Transaction* txn = db->BeginTransaction(write_options);
ASSERT_TRUE(txn);
s = db->Put(write_options, "foo", "1");
ASSERT_OK(s);
snapshot_read_options.snapshot = txn->GetSnapshot();
ASSERT_FALSE(snapshot_read_options.snapshot);
// No snapshot created yet
s = txn->Get(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "1");
txn->SetSnapshot();
snapshot_read_options.snapshot = txn->GetSnapshot();
ASSERT_TRUE(snapshot_read_options.snapshot);
s = db->Put(write_options, "foo", "2");
ASSERT_OK(s);
// Snapshot was created before change to '2'
s = txn->Get(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "1");
txn->ClearSnapshot();
snapshot_read_options.snapshot = txn->GetSnapshot();
ASSERT_FALSE(snapshot_read_options.snapshot);
// Snapshot has now been cleared
s = txn->Get(snapshot_read_options, "foo", &value);
ASSERT_EQ(value, "2");
s = txn->Commit();
ASSERT_OK(s);
delete txn;
}
TEST_F(TransactionTest, ToggleAutoCompactionTest) {
Status s;
TransactionOptions txn_options;
ColumnFamilyHandle *cfa, *cfb;
ColumnFamilyOptions cf_options;
// Create 2 new column families
s = db->CreateColumnFamily(cf_options, "CFA", &cfa);
ASSERT_OK(s);
s = db->CreateColumnFamily(cf_options, "CFB", &cfb);
ASSERT_OK(s);
delete cfa;
delete cfb;
delete db;
// open DB with three column families
std::vector<ColumnFamilyDescriptor> column_families;
// have to open default column family
column_families.push_back(
ColumnFamilyDescriptor(kDefaultColumnFamilyName, ColumnFamilyOptions()));
// open the new column families
column_families.push_back(
ColumnFamilyDescriptor("CFA", ColumnFamilyOptions()));
column_families.push_back(
ColumnFamilyDescriptor("CFB", ColumnFamilyOptions()));
ColumnFamilyOptions* cf_opt_default = &column_families[0].options;
ColumnFamilyOptions* cf_opt_cfa = &column_families[1].options;
ColumnFamilyOptions* cf_opt_cfb = &column_families[2].options;
cf_opt_default->disable_auto_compactions = false;
cf_opt_cfa->disable_auto_compactions = true;
cf_opt_cfb->disable_auto_compactions = false;
std::vector<ColumnFamilyHandle*> handles;
s = TransactionDB::Open(options, txn_db_options, dbname, column_families,
&handles, &db);
ASSERT_OK(s);
auto cfh_default = reinterpret_cast<ColumnFamilyHandleImpl*>(handles[0]);
auto opt_default = *cfh_default->cfd()->GetLatestMutableCFOptions();
auto cfh_a = reinterpret_cast<ColumnFamilyHandleImpl*>(handles[1]);
auto opt_a = *cfh_a->cfd()->GetLatestMutableCFOptions();
auto cfh_b = reinterpret_cast<ColumnFamilyHandleImpl*>(handles[2]);
auto opt_b = *cfh_b->cfd()->GetLatestMutableCFOptions();
ASSERT_EQ(opt_default.disable_auto_compactions, false);
ASSERT_EQ(opt_a.disable_auto_compactions, true);
ASSERT_EQ(opt_b.disable_auto_compactions, false);
for (auto handle : handles) {
delete handle;
}
}
TEST_F(TransactionTest, ExpiredTransactionDataRace1) {
// In this test, txn1 should succeed committing,
// as the callback is called after txn1 starts committing.
rocksdb::SyncPoint::GetInstance()->LoadDependency(
{{"TransactionTest::ExpirableTransactionDataRace:1"}});
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"TransactionTest::ExpirableTransactionDataRace:1", [&](void* arg) {
WriteOptions write_options;
TransactionOptions txn_options;
// Force txn1 to expire
/* sleep override */
std::this_thread::sleep_for(std::chrono::milliseconds(150));
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
Status s;
s = txn2->Put("X", "2");
ASSERT_TRUE(s.IsTimedOut());
s = txn2->Commit();
ASSERT_OK(s);
delete txn2;
});
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
WriteOptions write_options;
TransactionOptions txn_options;
txn_options.expiration = 100;
Transaction* txn1 = db->BeginTransaction(write_options, txn_options);
Status s;
s = txn1->Put("X", "1");
ASSERT_OK(s);
s = txn1->Commit();
ASSERT_OK(s);
ReadOptions read_options;
string value;
s = db->Get(read_options, "X", &value);
ASSERT_EQ("1", value);
delete txn1;
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
}
} // namespace rocksdb
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
#else
#include <stdio.h>
int main(int argc, char** argv) {
fprintf(stderr,
"SKIPPED as Transactions are not supported in ROCKSDB_LITE\n");
return 0;
}
#endif // ROCKSDB_LITE