mirror of
https://github.com/facebook/rocksdb.git
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c3466eab07
Summary: Clean up transactions to use the new RollbackToSavePoint api in WriteBatchWithIndex. Note, this diff depends on Pessimistic Transactions diff and ManagedSnapshot diff (D40869 and D43293). Test Plan: unit tests Reviewers: rven, yhchiang, kradhakrishnan, spetrunia, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D43371
1130 lines
28 KiB
C++
1130 lines
28 KiB
C++
// Copyright (c) 2015, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#ifndef ROCKSDB_LITE
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#include <string>
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#include "rocksdb/db.h"
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#include "rocksdb/utilities/transaction.h"
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#include "rocksdb/utilities/optimistic_transaction_db.h"
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#include "util/logging.h"
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#include "util/testharness.h"
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using std::string;
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namespace rocksdb {
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class OptimisticTransactionTest : public testing::Test {
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public:
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OptimisticTransactionDB* txn_db;
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DB* db;
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string dbname;
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Options options;
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OptimisticTransactionTest() {
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options.create_if_missing = true;
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options.max_write_buffer_number = 2;
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dbname = test::TmpDir() + "/optimistic_transaction_testdb";
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DestroyDB(dbname, options);
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Status s = OptimisticTransactionDB::Open(options, dbname, &txn_db);
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assert(s.ok());
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db = txn_db->GetBaseDB();
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}
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~OptimisticTransactionTest() {
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delete txn_db;
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DestroyDB(dbname, options);
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}
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};
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TEST_F(OptimisticTransactionTest, SuccessTest) {
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WriteOptions write_options;
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ReadOptions read_options;
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string value;
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Status s;
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db->Put(write_options, Slice("foo"), Slice("bar"));
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db->Put(write_options, Slice("foo2"), Slice("bar"));
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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txn->GetForUpdate(read_options, "foo", &value);
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ASSERT_EQ(value, "bar");
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txn->Put(Slice("foo"), Slice("bar2"));
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txn->GetForUpdate(read_options, "foo", &value);
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ASSERT_EQ(value, "bar2");
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s = txn->Commit();
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ASSERT_OK(s);
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db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "bar2");
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, WriteConflictTest) {
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WriteOptions write_options;
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ReadOptions read_options;
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string value;
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Status s;
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db->Put(write_options, "foo", "bar");
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db->Put(write_options, "foo2", "bar");
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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txn->Put("foo", "bar2");
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// This Put outside of a transaction will conflict with the previous write
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s = db->Put(write_options, "foo", "barz");
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ASSERT_OK(s);
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s = db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "barz");
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s = txn->Commit();
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ASSERT_TRUE(s.IsBusy()); // Txn should not commit
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// Verify that transaction did not write anything
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db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "barz");
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db->Get(read_options, "foo2", &value);
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ASSERT_EQ(value, "bar");
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, WriteConflictTest2) {
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WriteOptions write_options;
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ReadOptions read_options;
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OptimisticTransactionOptions txn_options;
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string value;
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Status s;
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db->Put(write_options, "foo", "bar");
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db->Put(write_options, "foo2", "bar");
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txn_options.set_snapshot = true;
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Transaction* txn = txn_db->BeginTransaction(write_options, txn_options);
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ASSERT_TRUE(txn);
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// This Put outside of a transaction will conflict with a later write
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s = db->Put(write_options, "foo", "barz");
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ASSERT_OK(s);
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txn->Put("foo", "bar2"); // Conflicts with write done after snapshot taken
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s = db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "barz");
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s = txn->Commit();
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ASSERT_TRUE(s.IsBusy()); // Txn should not commit
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// Verify that transaction did not write anything
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db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "barz");
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db->Get(read_options, "foo2", &value);
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ASSERT_EQ(value, "bar");
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, ReadConflictTest) {
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WriteOptions write_options;
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ReadOptions read_options, snapshot_read_options;
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OptimisticTransactionOptions txn_options;
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string value;
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Status s;
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db->Put(write_options, "foo", "bar");
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db->Put(write_options, "foo2", "bar");
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txn_options.set_snapshot = true;
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Transaction* txn = txn_db->BeginTransaction(write_options, txn_options);
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ASSERT_TRUE(txn);
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txn->SetSnapshot();
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snapshot_read_options.snapshot = txn->GetSnapshot();
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txn->GetForUpdate(snapshot_read_options, "foo", &value);
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ASSERT_EQ(value, "bar");
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// This Put outside of a transaction will conflict with the previous read
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s = db->Put(write_options, "foo", "barz");
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ASSERT_OK(s);
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s = db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "barz");
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s = txn->Commit();
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ASSERT_TRUE(s.IsBusy()); // Txn should not commit
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// Verify that transaction did not write anything
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txn->GetForUpdate(read_options, "foo", &value);
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ASSERT_EQ(value, "barz");
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txn->GetForUpdate(read_options, "foo2", &value);
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ASSERT_EQ(value, "bar");
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, TxnOnlyTest) {
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// Test to make sure transactions work when there are no other writes in an
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// empty db.
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WriteOptions write_options;
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ReadOptions read_options;
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string value;
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Status s;
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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txn->Put("x", "y");
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s = txn->Commit();
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ASSERT_OK(s);
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, FlushTest) {
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WriteOptions write_options;
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ReadOptions read_options, snapshot_read_options;
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string value;
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Status s;
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db->Put(write_options, Slice("foo"), Slice("bar"));
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db->Put(write_options, Slice("foo2"), Slice("bar"));
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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snapshot_read_options.snapshot = txn->GetSnapshot();
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txn->GetForUpdate(snapshot_read_options, "foo", &value);
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ASSERT_EQ(value, "bar");
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txn->Put(Slice("foo"), Slice("bar2"));
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txn->GetForUpdate(snapshot_read_options, "foo", &value);
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ASSERT_EQ(value, "bar2");
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// Put a random key so we have a memtable to flush
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s = db->Put(write_options, "dummy", "dummy");
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ASSERT_OK(s);
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// force a memtable flush
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FlushOptions flush_ops;
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db->Flush(flush_ops);
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s = txn->Commit();
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// txn should commit since the flushed table is still in MemtableList History
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ASSERT_OK(s);
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db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "bar2");
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, FlushTest2) {
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WriteOptions write_options;
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ReadOptions read_options, snapshot_read_options;
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string value;
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Status s;
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db->Put(write_options, Slice("foo"), Slice("bar"));
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db->Put(write_options, Slice("foo2"), Slice("bar"));
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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snapshot_read_options.snapshot = txn->GetSnapshot();
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txn->GetForUpdate(snapshot_read_options, "foo", &value);
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ASSERT_EQ(value, "bar");
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txn->Put(Slice("foo"), Slice("bar2"));
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txn->GetForUpdate(snapshot_read_options, "foo", &value);
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ASSERT_EQ(value, "bar2");
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// Put a random key so we have a MemTable to flush
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s = db->Put(write_options, "dummy", "dummy");
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ASSERT_OK(s);
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// force a memtable flush
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FlushOptions flush_ops;
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db->Flush(flush_ops);
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// Put a random key so we have a MemTable to flush
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s = db->Put(write_options, "dummy", "dummy2");
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ASSERT_OK(s);
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// force a memtable flush
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db->Flush(flush_ops);
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s = db->Put(write_options, "dummy", "dummy3");
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ASSERT_OK(s);
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// force a memtable flush
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// Since our test db has max_write_buffer_number=2, this flush will cause
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// the first memtable to get purged from the MemtableList history.
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db->Flush(flush_ops);
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s = txn->Commit();
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// txn should not commit since MemTableList History is not large enough
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ASSERT_TRUE(s.IsTryAgain());
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db->Get(read_options, "foo", &value);
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ASSERT_EQ(value, "bar");
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, NoSnapshotTest) {
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WriteOptions write_options;
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ReadOptions read_options;
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string value;
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Status s;
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db->Put(write_options, "AAA", "bar");
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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// Modify key after transaction start
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db->Put(write_options, "AAA", "bar1");
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// Read and write without a snapshot
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txn->GetForUpdate(read_options, "AAA", &value);
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ASSERT_EQ(value, "bar1");
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txn->Put("AAA", "bar2");
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// Should commit since read/write was done after data changed
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s = txn->Commit();
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ASSERT_OK(s);
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txn->GetForUpdate(read_options, "AAA", &value);
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ASSERT_EQ(value, "bar2");
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delete txn;
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}
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TEST_F(OptimisticTransactionTest, MultipleSnapshotTest) {
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WriteOptions write_options;
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ReadOptions read_options, snapshot_read_options;
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string value;
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Status s;
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db->Put(write_options, "AAA", "bar");
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db->Put(write_options, "BBB", "bar");
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db->Put(write_options, "CCC", "bar");
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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db->Put(write_options, "AAA", "bar1");
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// Read and write without a snapshot
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txn->GetForUpdate(read_options, "AAA", &value);
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ASSERT_EQ(value, "bar1");
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txn->Put("AAA", "bar2");
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// Modify BBB before snapshot is taken
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db->Put(write_options, "BBB", "bar1");
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txn->SetSnapshot();
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snapshot_read_options.snapshot = txn->GetSnapshot();
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// Read and write with snapshot
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txn->GetForUpdate(snapshot_read_options, "BBB", &value);
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ASSERT_EQ(value, "bar1");
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txn->Put("BBB", "bar2");
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db->Put(write_options, "CCC", "bar1");
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// Set a new snapshot
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txn->SetSnapshot();
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snapshot_read_options.snapshot = txn->GetSnapshot();
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// Read and write with snapshot
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txn->GetForUpdate(snapshot_read_options, "CCC", &value);
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ASSERT_EQ(value, "bar1");
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txn->Put("CCC", "bar2");
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s = txn->GetForUpdate(read_options, "AAA", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar2");
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s = txn->GetForUpdate(read_options, "BBB", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar2");
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s = txn->GetForUpdate(read_options, "CCC", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar2");
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s = db->Get(read_options, "AAA", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar1");
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s = db->Get(read_options, "BBB", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar1");
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s = db->Get(read_options, "CCC", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar1");
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s = txn->Commit();
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ASSERT_OK(s);
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s = db->Get(read_options, "AAA", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar2");
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s = db->Get(read_options, "BBB", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar2");
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s = db->Get(read_options, "CCC", &value);
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ASSERT_OK(s);
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ASSERT_EQ(value, "bar2");
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// verify that we track multiple writes to the same key at different snapshots
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delete txn;
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txn = txn_db->BeginTransaction(write_options);
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// Potentially conflicting writes
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db->Put(write_options, "ZZZ", "zzz");
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db->Put(write_options, "XXX", "xxx");
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txn->SetSnapshot();
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OptimisticTransactionOptions txn_options;
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txn_options.set_snapshot = true;
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Transaction* txn2 = txn_db->BeginTransaction(write_options, txn_options);
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txn2->SetSnapshot();
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// This should not conflict in txn since the snapshot is later than the
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// previous write (spoiler alert: it will later conflict with txn2).
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txn->Put("ZZZ", "zzzz");
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s = txn->Commit();
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ASSERT_OK(s);
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delete txn;
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// This will conflict since the snapshot is earlier than another write to ZZZ
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txn2->Put("ZZZ", "xxxxx");
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s = txn2->Commit();
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ASSERT_TRUE(s.IsBusy());
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delete txn2;
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}
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TEST_F(OptimisticTransactionTest, ColumnFamiliesTest) {
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WriteOptions write_options;
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ReadOptions read_options, snapshot_read_options;
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OptimisticTransactionOptions txn_options;
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string value;
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Status s;
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ColumnFamilyHandle *cfa, *cfb;
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ColumnFamilyOptions cf_options;
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// Create 2 new column families
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s = db->CreateColumnFamily(cf_options, "CFA", &cfa);
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ASSERT_OK(s);
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s = db->CreateColumnFamily(cf_options, "CFB", &cfb);
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ASSERT_OK(s);
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delete cfa;
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delete cfb;
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delete txn_db;
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// open DB with three column families
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std::vector<ColumnFamilyDescriptor> column_families;
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// have to open default column family
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column_families.push_back(
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ColumnFamilyDescriptor(kDefaultColumnFamilyName, ColumnFamilyOptions()));
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// open the new column families
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column_families.push_back(
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ColumnFamilyDescriptor("CFA", ColumnFamilyOptions()));
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column_families.push_back(
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ColumnFamilyDescriptor("CFB", ColumnFamilyOptions()));
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std::vector<ColumnFamilyHandle*> handles;
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s = OptimisticTransactionDB::Open(options, dbname, column_families, &handles,
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&txn_db);
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ASSERT_OK(s);
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db = txn_db->GetBaseDB();
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Transaction* txn = txn_db->BeginTransaction(write_options);
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ASSERT_TRUE(txn);
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txn->SetSnapshot();
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snapshot_read_options.snapshot = txn->GetSnapshot();
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txn_options.set_snapshot = true;
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Transaction* txn2 = txn_db->BeginTransaction(write_options, txn_options);
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ASSERT_TRUE(txn2);
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// Write some data to the db
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WriteBatch batch;
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batch.Put("foo", "foo");
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batch.Put(handles[1], "AAA", "bar");
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batch.Put(handles[1], "AAAZZZ", "bar");
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s = db->Write(write_options, &batch);
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ASSERT_OK(s);
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db->Delete(write_options, handles[1], "AAAZZZ");
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// These keys do no conflict with existing writes since they're in
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// different column families
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txn->Delete("AAA");
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txn->GetForUpdate(snapshot_read_options, handles[1], "foo", &value);
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Slice key_slice("AAAZZZ");
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Slice value_slices[2] = {Slice("bar"), Slice("bar")};
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txn->Put(handles[2], SliceParts(&key_slice, 1), SliceParts(value_slices, 2));
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// Txn should commit
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s = txn->Commit();
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ASSERT_OK(s);
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s = db->Get(read_options, "AAA", &value);
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ASSERT_TRUE(s.IsNotFound());
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s = db->Get(read_options, handles[2], "AAAZZZ", &value);
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ASSERT_EQ(value, "barbar");
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Slice key_slices[3] = {Slice("AAA"), Slice("ZZ"), Slice("Z")};
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Slice value_slice("barbarbar");
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// This write will cause a conflict with the earlier batch write
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txn2->Put(handles[1], SliceParts(key_slices, 3), SliceParts(&value_slice, 1));
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txn2->Delete(handles[2], "XXX");
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txn2->Delete(handles[1], "XXX");
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s = txn2->GetForUpdate(snapshot_read_options, handles[1], "AAA", &value);
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ASSERT_TRUE(s.IsNotFound());
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// Verify txn did not commit
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s = txn2->Commit();
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ASSERT_TRUE(s.IsBusy());
|
|
s = db->Get(read_options, handles[1], "AAAZZZ", &value);
|
|
ASSERT_EQ(value, "barbar");
|
|
|
|
delete txn;
|
|
delete txn2;
|
|
|
|
txn = txn_db->BeginTransaction(write_options, txn_options);
|
|
snapshot_read_options.snapshot = txn->GetSnapshot();
|
|
|
|
txn2 = txn_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");
|
|
|
|
txn->Delete(handles[2], "ZZZ");
|
|
txn->Put(handles[2], "ZZZ", "YYY");
|
|
txn->Put(handles[2], "ZZZ", "YYYY");
|
|
txn->Delete(handles[2], "ZZZ");
|
|
txn->Put(handles[2], "AAAZZZ", "barbarbar");
|
|
|
|
// 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);
|
|
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");
|
|
|
|
// Verify Txn Did not Commit
|
|
s = txn2->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
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(OptimisticTransactionTest, EmptyTest) {
|
|
WriteOptions write_options;
|
|
ReadOptions read_options;
|
|
string value;
|
|
Status s;
|
|
|
|
s = db->Put(write_options, "aaa", "aaa");
|
|
ASSERT_OK(s);
|
|
|
|
Transaction* txn = txn_db->BeginTransaction(write_options);
|
|
s = txn->Commit();
|
|
ASSERT_OK(s);
|
|
delete txn;
|
|
|
|
txn = txn_db->BeginTransaction(write_options);
|
|
txn->Rollback();
|
|
delete txn;
|
|
|
|
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 = txn_db->BeginTransaction(write_options);
|
|
txn->SetSnapshot();
|
|
s = txn->GetForUpdate(read_options, "aaa", &value);
|
|
ASSERT_EQ(value, "aaa");
|
|
|
|
s = db->Put(write_options, "aaa", "xxx");
|
|
s = txn->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
delete txn;
|
|
}
|
|
|
|
TEST_F(OptimisticTransactionTest, PredicateManyPreceders) {
|
|
WriteOptions write_options;
|
|
ReadOptions read_options1, read_options2;
|
|
OptimisticTransactionOptions txn_options;
|
|
string value;
|
|
Status s;
|
|
|
|
txn_options.set_snapshot = true;
|
|
Transaction* txn1 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options1.snapshot = txn1->GetSnapshot();
|
|
|
|
Transaction* txn2 = txn_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());
|
|
|
|
txn2->Put("2", "x");
|
|
|
|
s = txn2->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
multiget_values.clear();
|
|
results =
|
|
txn1->MultiGetForUpdate(read_options1, multiget_keys, &multiget_values);
|
|
ASSERT_TRUE(results[1].IsNotFound());
|
|
|
|
// should not commit since txn2 wrote a key txn has read
|
|
s = txn1->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
delete txn1;
|
|
delete txn2;
|
|
|
|
txn1 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options1.snapshot = txn1->GetSnapshot();
|
|
|
|
txn2 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options2.snapshot = txn2->GetSnapshot();
|
|
|
|
txn1->Put("4", "x");
|
|
|
|
txn2->Delete("4");
|
|
|
|
// txn1 can commit since txn2's delete hasn't happened yet (it's just batched)
|
|
s = txn1->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
s = txn2->GetForUpdate(read_options2, "4", &value);
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
|
|
// txn2 cannot commit since txn1 changed "4"
|
|
s = txn2->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
delete txn1;
|
|
delete txn2;
|
|
}
|
|
|
|
TEST_F(OptimisticTransactionTest, LostUpdate) {
|
|
WriteOptions write_options;
|
|
ReadOptions read_options, read_options1, read_options2;
|
|
OptimisticTransactionOptions txn_options;
|
|
string value;
|
|
Status s;
|
|
|
|
// Test 2 transactions writing to the same key in multiple orders and
|
|
// with/without snapshots
|
|
|
|
Transaction* txn1 = txn_db->BeginTransaction(write_options);
|
|
Transaction* txn2 = txn_db->BeginTransaction(write_options);
|
|
|
|
txn1->Put("1", "1");
|
|
txn2->Put("1", "2");
|
|
|
|
s = txn1->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
s = txn2->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
delete txn1;
|
|
delete txn2;
|
|
|
|
txn_options.set_snapshot = true;
|
|
txn1 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options1.snapshot = txn1->GetSnapshot();
|
|
|
|
txn2 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options2.snapshot = txn2->GetSnapshot();
|
|
|
|
txn1->Put("1", "3");
|
|
txn2->Put("1", "4");
|
|
|
|
s = txn1->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
s = txn2->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
delete txn1;
|
|
delete txn2;
|
|
|
|
txn1 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options1.snapshot = txn1->GetSnapshot();
|
|
|
|
txn2 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options2.snapshot = txn2->GetSnapshot();
|
|
|
|
txn1->Put("1", "5");
|
|
s = txn1->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
txn2->Put("1", "6");
|
|
s = txn2->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
delete txn1;
|
|
delete txn2;
|
|
|
|
txn1 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options1.snapshot = txn1->GetSnapshot();
|
|
|
|
txn2 = txn_db->BeginTransaction(write_options, txn_options);
|
|
read_options2.snapshot = txn2->GetSnapshot();
|
|
|
|
txn1->Put("1", "5");
|
|
s = txn1->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
txn2->SetSnapshot();
|
|
txn2->Put("1", "6");
|
|
s = txn2->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
delete txn1;
|
|
delete txn2;
|
|
|
|
txn1 = txn_db->BeginTransaction(write_options);
|
|
txn2 = txn_db->BeginTransaction(write_options);
|
|
|
|
txn1->Put("1", "7");
|
|
s = txn1->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
txn2->Put("1", "8");
|
|
s = txn2->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
delete txn1;
|
|
delete txn2;
|
|
|
|
s = db->Get(read_options, "1", &value);
|
|
ASSERT_OK(s);
|
|
ASSERT_EQ(value, "8");
|
|
}
|
|
|
|
TEST_F(OptimisticTransactionTest, UntrackedWrites) {
|
|
WriteOptions write_options;
|
|
ReadOptions read_options;
|
|
string value;
|
|
Status s;
|
|
|
|
// Verify transaction rollback works for untracked keys.
|
|
Transaction* txn = txn_db->BeginTransaction(write_options);
|
|
txn->PutUntracked("untracked", "0");
|
|
txn->Rollback();
|
|
s = db->Get(read_options, "untracked", &value);
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
|
|
delete txn;
|
|
txn = txn_db->BeginTransaction(write_options);
|
|
|
|
txn->Put("tracked", "1");
|
|
txn->PutUntracked("untracked", "1");
|
|
txn->MergeUntracked("untracked", "2");
|
|
txn->DeleteUntracked("untracked");
|
|
|
|
// Write to the untracked key outside of the transaction and verify
|
|
// it doesn't prevent the transaction from committing.
|
|
s = db->Put(write_options, "untracked", "x");
|
|
ASSERT_OK(s);
|
|
|
|
s = txn->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
s = db->Get(read_options, "untracked", &value);
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
|
|
delete txn;
|
|
txn = txn_db->BeginTransaction(write_options);
|
|
|
|
txn->Put("tracked", "10");
|
|
txn->PutUntracked("untracked", "A");
|
|
|
|
// Write to tracked key outside of the transaction and verify that the
|
|
// untracked keys are not written when the commit fails.
|
|
s = db->Delete(write_options, "tracked");
|
|
|
|
s = txn->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
s = db->Get(read_options, "untracked", &value);
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
|
|
delete txn;
|
|
}
|
|
|
|
TEST_F(OptimisticTransactionTest, IteratorTest) {
|
|
WriteOptions write_options;
|
|
ReadOptions read_options, snapshot_read_options;
|
|
OptimisticTransactionOptions 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 = 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);
|
|
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());
|
|
|
|
// key "C" was modified in the db after txn's snapshot. txn will not commit.
|
|
s = txn->Commit();
|
|
ASSERT_TRUE(s.IsBusy());
|
|
|
|
delete iter;
|
|
delete txn;
|
|
}
|
|
|
|
TEST_F(OptimisticTransactionTest, SavepointTest) {
|
|
WriteOptions write_options;
|
|
ReadOptions read_options, snapshot_read_options;
|
|
OptimisticTransactionOptions txn_options;
|
|
string value;
|
|
Status s;
|
|
|
|
Transaction* txn = txn_db->BeginTransaction(write_options);
|
|
ASSERT_TRUE(txn);
|
|
|
|
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);
|
|
|
|
s = txn->Commit();
|
|
ASSERT_OK(s);
|
|
|
|
s = db->Get(read_options, "B", &value);
|
|
ASSERT_OK(s);
|
|
ASSERT_EQ("b", value);
|
|
|
|
delete txn;
|
|
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_OK(txn->RollbackToSavePoint()); // Rollback to 2
|
|
|
|
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);
|
|
|
|
// Rollback to beginning of txn
|
|
s = txn->RollbackToSavePoint();
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
txn->Rollback();
|
|
|
|
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);
|
|
|
|
txn->SetSavePoint(); // 3
|
|
txn->SetSavePoint(); // 4
|
|
|
|
s = txn->Put("G", "g");
|
|
ASSERT_OK(s);
|
|
|
|
s = txn->Delete("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);
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
|
|
s = txn->Get(read_options, "B", &value);
|
|
ASSERT_TRUE(s.IsNotFound());
|
|
|
|
ASSERT_OK(txn->RollbackToSavePoint()); // Rollback to 3
|
|
|
|
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;
|
|
}
|
|
|
|
} // 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 optimistic_transaction is not supported in ROCKSDB_LITE\n");
|
|
return 0;
|
|
}
|
|
|
|
#endif // !ROCKSDB_LITE
|