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Add multithreaded transaction test
Summary: Refactored db_bench transaction stress tests so that they can be called from unit tests as well. Test Plan: run new unit test as well as db_bench Reviewers: yhchiang, IslamAbdelRahman, sdong Reviewed By: IslamAbdelRahman Subscribers: andrewkr, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D55203
This commit is contained in:
agiardullo
parent
e8e6cf0173
commit
790252805d
1
src.mk
1
src.mk
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@ -101,6 +101,7 @@ LIB_SOURCES = \
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util/env_posix.cc \
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util/io_posix.cc \
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util/thread_posix.cc \
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util/transaction_test_util.cc \
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util/sst_file_manager_impl.cc \
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util/file_util.cc \
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util/file_reader_writer.cc \
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@ -36,33 +36,34 @@
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#include "db/db_impl.h"
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#include "db/version_set.h"
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#include "rocksdb/options.h"
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#include "hdfs/env_hdfs.h"
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#include "port/port.h"
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#include "port/stack_trace.h"
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#include "rocksdb/cache.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "rocksdb/memtablerep.h"
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#include "rocksdb/write_batch.h"
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#include "rocksdb/slice.h"
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#include "rocksdb/filter_policy.h"
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#include "rocksdb/rate_limiter.h"
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#include "rocksdb/slice_transform.h"
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#include "rocksdb/memtablerep.h"
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#include "rocksdb/options.h"
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#include "rocksdb/perf_context.h"
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#include "rocksdb/rate_limiter.h"
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#include "rocksdb/slice.h"
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#include "rocksdb/slice_transform.h"
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#include "rocksdb/utilities/flashcache.h"
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#include "rocksdb/utilities/optimistic_transaction_db.h"
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#include "rocksdb/utilities/transaction.h"
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#include "rocksdb/utilities/transaction_db.h"
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#include "rocksdb/utilities/optimistic_transaction_db.h"
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#include "port/port.h"
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#include "port/stack_trace.h"
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#include "util/crc32c.h"
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#include "rocksdb/write_batch.h"
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#include "util/compression.h"
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#include "util/crc32c.h"
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#include "util/histogram.h"
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#include "util/mutexlock.h"
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#include "util/random.h"
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#include "util/string_util.h"
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#include "util/statistics.h"
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#include "util/string_util.h"
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#include "util/testutil.h"
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#include "util/transaction_test_util.h"
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#include "util/xxhash.h"
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#include "hdfs/env_hdfs.h"
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#include "utilities/merge_operators.h"
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#ifdef OS_WIN
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@ -3763,18 +3764,22 @@ class Benchmark {
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ReadOptions options(FLAGS_verify_checksum, true);
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Duration duration(FLAGS_duration, readwrites_);
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ReadOptions read_options(FLAGS_verify_checksum, true);
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std::string value;
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DB* db = db_.db;
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uint64_t transactions_done = 0;
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uint64_t transactions_aborted = 0;
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Status s;
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uint64_t num_prefix_ranges = FLAGS_transaction_sets;
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uint64_t transactions_done = 0;
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if (num_prefix_ranges == 0 || num_prefix_ranges > 9999) {
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fprintf(stderr, "invalid value for transaction_sets\n");
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abort();
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}
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TransactionOptions txn_options;
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txn_options.lock_timeout = FLAGS_transaction_lock_timeout;
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txn_options.set_snapshot = FLAGS_transaction_set_snapshot;
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RandomTransactionInserter inserter(&thread->rand, write_options_,
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read_options, FLAGS_num,
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num_prefix_ranges);
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if (FLAGS_num_multi_db > 1) {
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fprintf(stderr,
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"Cannot run RandomTransaction benchmark with "
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@ -3783,126 +3788,26 @@ class Benchmark {
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}
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while (!duration.Done(1)) {
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Transaction* txn = nullptr;
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WriteBatch* batch = nullptr;
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bool success;
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// RandomTransactionInserter will attempt to insert a key for each
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// # of FLAGS_transaction_sets
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if (FLAGS_optimistic_transaction_db) {
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txn = db_.opt_txn_db->BeginTransaction(write_options_);
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assert(txn);
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success = inserter.OptimisticTransactionDBInsert(db_.opt_txn_db);
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} else if (FLAGS_transaction_db) {
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TransactionDB* txn_db = reinterpret_cast<TransactionDB*>(db_.db);
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TransactionOptions txn_options;
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txn_options.lock_timeout = FLAGS_transaction_lock_timeout;
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txn = txn_db->BeginTransaction(write_options_, txn_options);
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assert(txn);
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success = inserter.TransactionDBInsert(txn_db, txn_options);
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} else {
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batch = new WriteBatch();
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success = inserter.DBInsert(db_.db);
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}
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if (txn && FLAGS_transaction_set_snapshot) {
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txn->SetSnapshot();
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}
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// pick a random number to use to increment a key in each set
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uint64_t incr = (thread->rand.Next() % 100) + 1;
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bool failed = false;
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// For each set, pick a key at random and increment it
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for (uint8_t i = 0; i < num_prefix_ranges; i++) {
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uint64_t int_value;
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char prefix_buf[5];
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// key format: [SET#][random#]
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std::string rand_key = ToString(thread->rand.Next() % FLAGS_num);
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Slice base_key(rand_key);
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// Pad prefix appropriately so we can iterate over each set
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snprintf(prefix_buf, sizeof(prefix_buf), "%04d", i + 1);
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std::string full_key = std::string(prefix_buf) + base_key.ToString();
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Slice key(full_key);
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if (txn) {
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s = txn->GetForUpdate(read_options, key, &value);
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} else {
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s = db->Get(read_options, key, &value);
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}
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if (s.ok()) {
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int_value = std::stoull(value);
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if (int_value == 0 || int_value == ULONG_MAX) {
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fprintf(stderr, "Get returned unexpected value: %s\n",
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value.c_str());
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abort();
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}
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} else if (s.IsNotFound()) {
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int_value = 0;
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} else if (!(s.IsBusy() || s.IsTimedOut() || s.IsTryAgain())) {
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fprintf(stderr, "Get returned an unexpected error: %s\n",
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s.ToString().c_str());
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abort();
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} else {
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failed = true;
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break;
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}
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if (FLAGS_transaction_sleep > 0) {
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FLAGS_env->SleepForMicroseconds(thread->rand.Next() %
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FLAGS_transaction_sleep);
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}
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std::string sum = ToString(int_value + incr);
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if (txn) {
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s = txn->Put(key, sum);
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if (!s.ok()) {
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// Since we did a GetForUpdate, Put should not fail.
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fprintf(stderr, "Put returned an unexpected error: %s\n",
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s.ToString().c_str());
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abort();
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}
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} else {
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batch->Put(key, sum);
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}
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}
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if (txn) {
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if (failed) {
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transactions_aborted++;
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txn->Rollback();
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s = Status::OK();
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} else {
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s = txn->Commit();
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}
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} else {
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s = db->Write(write_options_, batch);
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}
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if (!s.ok()) {
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failed = true;
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// Ideally, we'd want to run this stress test with enough concurrency
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// on a small enough set of keys that we get some failed transactions
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// due to conflicts.
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if (FLAGS_optimistic_transaction_db &&
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(s.IsBusy() || s.IsTimedOut() || s.IsTryAgain())) {
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transactions_aborted++;
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} else if (FLAGS_transaction_db && s.IsExpired()) {
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transactions_aborted++;
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} else {
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fprintf(stderr, "Unexpected write error: %s\n", s.ToString().c_str());
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abort();
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}
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}
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delete txn;
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delete batch;
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if (!failed) {
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thread->stats.FinishedOps(nullptr, db, 1, kOthers);
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if (!success) {
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fprintf(stderr, "Unexpected error: %s\n",
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inserter.GetLastStatus().ToString().c_str());
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abort();
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}
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thread->stats.FinishedOps(nullptr, db_.db, 1, kOthers);
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transactions_done++;
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}
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@ -3910,7 +3815,7 @@ class Benchmark {
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if (FLAGS_optimistic_transaction_db || FLAGS_transaction_db) {
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snprintf(msg, sizeof(msg),
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"( transactions:%" PRIu64 " aborts:%" PRIu64 ")",
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transactions_done, transactions_aborted);
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transactions_done, inserter.GetFailureCount());
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} else {
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snprintf(msg, sizeof(msg), "( batches:%" PRIu64 " )", transactions_done);
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}
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@ -3930,50 +3835,14 @@ class Benchmark {
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return;
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}
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uint64_t prev_total = 0;
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Status s =
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RandomTransactionInserter::Verify(db_.db, FLAGS_transaction_sets);
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// For each set of keys with the same prefix, sum all the values
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for (uint32_t i = 0; i < FLAGS_transaction_sets; i++) {
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char prefix_buf[5];
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snprintf(prefix_buf, sizeof(prefix_buf), "%04u", i + 1);
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uint64_t total = 0;
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Iterator* iter = db_.db->NewIterator(ReadOptions());
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for (iter->Seek(Slice(prefix_buf, 4)); iter->Valid(); iter->Next()) {
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Slice key = iter->key();
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// stop when we reach a different prefix
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if (key.ToString().compare(0, 4, prefix_buf) != 0) {
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break;
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}
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Slice value = iter->value();
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uint64_t int_value = std::stoull(value.ToString());
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if (int_value == 0 || int_value == ULONG_MAX) {
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fprintf(stderr, "Iter returned unexpected value: %s\n",
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value.ToString().c_str());
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abort();
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}
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total += int_value;
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}
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delete iter;
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if (i > 0) {
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if (total != prev_total) {
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fprintf(stderr,
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"RandomTransactionVerify found inconsistent totals. "
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"Set[%" PRIu32 "]: %" PRIu64 ", Set[%" PRIu32 "]: %" PRIu64
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" \n",
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i - 1, prev_total, i, total);
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abort();
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}
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}
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prev_total = total;
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if (s.ok()) {
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fprintf(stdout, "RandomTransactionVerify Success.\n");
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} else {
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fprintf(stdout, "RandomTransactionVerify FAILED!!\n");
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}
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fprintf(stdout, "RandomTransactionVerify Success!\n");
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}
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#endif // ROCKSDB_LITE
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237
util/transaction_test_util.cc
Normal file
237
util/transaction_test_util.cc
Normal file
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@ -0,0 +1,237 @@
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// Copyright (c) 2011-present, 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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#ifndef __STDC_FORMAT_MACROS
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#define __STDC_FORMAT_MACROS
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#endif
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#include "util/transaction_test_util.h"
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#include <inttypes.h>
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#include <string>
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#include "rocksdb/db.h"
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#include "rocksdb/utilities/optimistic_transaction_db.h"
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#include "rocksdb/utilities/transaction.h"
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#include "rocksdb/utilities/transaction_db.h"
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#include "util/random.h"
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#include "util/string_util.h"
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namespace rocksdb {
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RandomTransactionInserter::RandomTransactionInserter(
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Random64* rand, const WriteOptions& write_options,
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const ReadOptions& read_options, uint64_t num_keys, uint16_t num_sets)
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: rand_(rand),
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write_options_(write_options),
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read_options_(read_options),
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num_keys_(num_keys),
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num_sets_(num_sets) {}
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RandomTransactionInserter::~RandomTransactionInserter() {
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if (txn_ != nullptr) {
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delete txn_;
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}
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if (optimistic_txn_ != nullptr) {
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delete optimistic_txn_;
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}
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}
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bool RandomTransactionInserter::TransactionDBInsert(
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TransactionDB* db, const TransactionOptions& txn_options) {
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txn_ = db->BeginTransaction(write_options_, txn_options, txn_);
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return DoInsert(nullptr, txn_, false);
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}
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bool RandomTransactionInserter::OptimisticTransactionDBInsert(
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OptimisticTransactionDB* db,
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const OptimisticTransactionOptions& txn_options) {
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optimistic_txn_ =
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db->BeginTransaction(write_options_, txn_options, optimistic_txn_);
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return DoInsert(nullptr, optimistic_txn_, true);
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}
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bool RandomTransactionInserter::DBInsert(DB* db) {
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return DoInsert(db, nullptr, false);
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}
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bool RandomTransactionInserter::DoInsert(DB* db, Transaction* txn,
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bool is_optimistic) {
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Status s;
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WriteBatch batch;
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std::string value;
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// pick a random number to use to increment a key in each set
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uint64_t incr = (rand_->Next() % 100) + 1;
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bool unexpected_error = false;
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// For each set, pick a key at random and increment it
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for (uint8_t i = 0; i < num_sets_; i++) {
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uint64_t int_value = 0;
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char prefix_buf[5];
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// prefix_buf needs to be large enough to hold a uint16 in string form
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// key format: [SET#][random#]
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std::string rand_key = ToString(rand_->Next() % num_keys_);
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Slice base_key(rand_key);
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// Pad prefix appropriately so we can iterate over each set
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snprintf(prefix_buf, sizeof(prefix_buf), "%.4u", i + 1);
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std::string full_key = std::string(prefix_buf) + base_key.ToString();
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Slice key(full_key);
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if (txn != nullptr) {
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s = txn->GetForUpdate(read_options_, key, &value);
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} else {
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s = db->Get(read_options_, key, &value);
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}
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if (s.ok()) {
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// Found key, parse its value
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int_value = std::stoull(value);
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if (int_value == 0 || int_value == ULONG_MAX) {
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unexpected_error = true;
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fprintf(stderr, "Get returned unexpected value: %s\n", value.c_str());
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s = Status::Corruption();
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}
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} else if (s.IsNotFound()) {
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// Have not yet written to this key, so assume its value is 0
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int_value = 0;
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s = Status::OK();
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} else {
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// Optimistic transactions should never return non-ok status here.
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// Non-optimistic transactions may return write-coflict/timeout errors.
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if (is_optimistic || !(s.IsBusy() || s.IsTimedOut() || s.IsTryAgain())) {
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fprintf(stderr, "Get returned an unexpected error: %s\n",
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s.ToString().c_str());
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unexpected_error = true;
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}
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break;
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}
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if (s.ok()) {
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// Increment key
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std::string sum = ToString(int_value + incr);
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if (txn != nullptr) {
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s = txn->Put(key, sum);
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if (!s.ok()) {
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// Since we did a GetForUpdate, Put should not fail.
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fprintf(stderr, "Put returned an unexpected error: %s\n",
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s.ToString().c_str());
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unexpected_error = true;
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}
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} else {
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batch.Put(key, sum);
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}
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}
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}
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if (s.ok()) {
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if (txn != nullptr) {
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s = txn->Commit();
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if (!s.ok()) {
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if (is_optimistic) {
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// Optimistic transactions can have write-conflict errors on commit.
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// Any other error is unexpected.
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if (!(s.IsBusy() || s.IsTimedOut() || s.IsTryAgain())) {
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unexpected_error = true;
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}
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} else {
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// Non-optimistic transactions should only fail due to expiration
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// or write failures. For testing purproses, we do not expect any
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// write failures.
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if (!s.IsExpired()) {
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unexpected_error = true;
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}
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}
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if (unexpected_error) {
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fprintf(stderr, "Commit returned an unexpected error: %s\n",
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s.ToString().c_str());
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}
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}
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} else {
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s = db->Write(write_options_, &batch);
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if (!s.ok()) {
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unexpected_error = true;
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fprintf(stderr, "Write returned an unexpected error: %s\n",
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s.ToString().c_str());
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}
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}
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} else {
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if (txn != nullptr) {
|
||||
txn->Rollback();
|
||||
}
|
||||
}
|
||||
|
||||
if (s.ok()) {
|
||||
success_count_++;
|
||||
} else {
|
||||
failure_count_++;
|
||||
}
|
||||
|
||||
last_status_ = s;
|
||||
|
||||
// return success if we didn't get any unexpected errors
|
||||
return !unexpected_error;
|
||||
}
|
||||
|
||||
Status RandomTransactionInserter::Verify(DB* db, uint16_t num_sets) {
|
||||
uint64_t prev_total = 0;
|
||||
|
||||
// For each set of keys with the same prefix, sum all the values
|
||||
for (uint32_t i = 0; i < num_sets; i++) {
|
||||
char prefix_buf[5];
|
||||
snprintf(prefix_buf, sizeof(prefix_buf), "%.4u", i + 1);
|
||||
uint64_t total = 0;
|
||||
|
||||
Iterator* iter = db->NewIterator(ReadOptions());
|
||||
|
||||
for (iter->Seek(Slice(prefix_buf, 4)); iter->Valid(); iter->Next()) {
|
||||
Slice key = iter->key();
|
||||
|
||||
// stop when we reach a different prefix
|
||||
if (key.ToString().compare(0, 4, prefix_buf) != 0) {
|
||||
break;
|
||||
}
|
||||
|
||||
Slice value = iter->value();
|
||||
uint64_t int_value = std::stoull(value.ToString());
|
||||
if (int_value == 0 || int_value == ULONG_MAX) {
|
||||
fprintf(stderr, "Iter returned unexpected value: %s\n",
|
||||
value.ToString().c_str());
|
||||
return Status::Corruption();
|
||||
}
|
||||
|
||||
total += int_value;
|
||||
}
|
||||
delete iter;
|
||||
|
||||
if (i > 0) {
|
||||
if (total != prev_total) {
|
||||
fprintf(stderr,
|
||||
"RandomTransactionVerify found inconsistent totals. "
|
||||
"Set[%" PRIu32 "]: %" PRIu64 ", Set[%" PRIu32 "]: %" PRIu64
|
||||
" \n",
|
||||
i - 1, prev_total, i, total);
|
||||
return Status::Corruption();
|
||||
}
|
||||
}
|
||||
prev_total = total;
|
||||
}
|
||||
|
||||
return Status::OK();
|
||||
}
|
||||
|
||||
} // namespace rocksdb
|
||||
|
||||
#endif // ROCKSDB_LITE
|
||||
111
util/transaction_test_util.h
Normal file
111
util/transaction_test_util.h
Normal file
|
|
@ -0,0 +1,111 @@
|
|||
// 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.
|
||||
|
||||
#pragma once
|
||||
|
||||
#ifndef ROCKSDB_LITE
|
||||
|
||||
#include "rocksdb/options.h"
|
||||
#include "rocksdb/utilities/optimistic_transaction_db.h"
|
||||
#include "rocksdb/utilities/transaction_db.h"
|
||||
|
||||
namespace rocksdb {
|
||||
|
||||
class DB;
|
||||
class Random64;
|
||||
|
||||
// Utility class for stress testing transactions. Can be used to write many
|
||||
// transactions in parallel and then validate that the data written is logically
|
||||
// consistent. This class assumes the input DB is initially empty.
|
||||
//
|
||||
// Each call to TransactionDBInsert()/OptimisticTransactionDBInsert() will
|
||||
// increment the value of a key in #num_sets sets of keys. Regardless of
|
||||
// whether the transaction succeeds, the total sum of values of keys in each
|
||||
// set is an invariant that should remain equal.
|
||||
//
|
||||
// After calling TransactionDBInsert()/OptimisticTransactionDBInsert() many
|
||||
// times, Verify() can be called to validate that the invariant holds.
|
||||
//
|
||||
// To test writing Transaction in parallel, multiple threads can create a
|
||||
// RandomTransactionInserter with similar arguments using the same DB.
|
||||
class RandomTransactionInserter {
|
||||
public:
|
||||
// num_keys is the number of keys in each set.
|
||||
// num_sets is the number of sets of keys.
|
||||
explicit RandomTransactionInserter(
|
||||
Random64* rand, const WriteOptions& write_options = WriteOptions(),
|
||||
const ReadOptions& read_options = ReadOptions(), uint64_t num_keys = 1000,
|
||||
uint16_t num_sets = 3);
|
||||
|
||||
~RandomTransactionInserter();
|
||||
|
||||
// Increment a key in each set using a Transaction on a TransactionDB.
|
||||
//
|
||||
// Returns true if the transaction succeeded OR if any error encountered was
|
||||
// expected (eg a write-conflict). Error status may be obtained by calling
|
||||
// GetLastStatus();
|
||||
bool TransactionDBInsert(
|
||||
TransactionDB* db,
|
||||
const TransactionOptions& txn_options = TransactionOptions());
|
||||
|
||||
// Increment a key in each set using a Transaction on an
|
||||
// OptimisticTransactionDB
|
||||
//
|
||||
// Returns true if the transaction succeeded OR if any error encountered was
|
||||
// expected (eg a write-conflict). Error status may be obtained by calling
|
||||
// GetLastStatus();
|
||||
bool OptimisticTransactionDBInsert(
|
||||
OptimisticTransactionDB* db,
|
||||
const OptimisticTransactionOptions& txn_options =
|
||||
OptimisticTransactionOptions());
|
||||
// Increment a key in each set without using a transaction. If this function
|
||||
// is called in parallel, then Verify() may fail.
|
||||
//
|
||||
// Returns true if the write succeeds.
|
||||
// Error status may be obtained by calling GetLastStatus().
|
||||
bool DBInsert(DB* db);
|
||||
|
||||
// Returns OK if Invariant is true.
|
||||
static Status Verify(DB* db, uint16_t num_sets);
|
||||
|
||||
// Returns the status of the previous Insert operation
|
||||
Status GetLastStatus() { return last_status_; }
|
||||
|
||||
// Returns the number of successfully written calls to
|
||||
// TransactionDBInsert/OptimisticTransactionDBInsert/DBInsert
|
||||
uint64_t GetSuccessCount() { return success_count_; }
|
||||
|
||||
// Returns the number of calls to
|
||||
// TransactionDBInsert/OptimisticTransactionDBInsert/DBInsert that did not
|
||||
// write any data.
|
||||
uint64_t GetFailureCount() { return failure_count_; }
|
||||
|
||||
private:
|
||||
// Input options
|
||||
Random64* rand_;
|
||||
const WriteOptions write_options_;
|
||||
const ReadOptions read_options_;
|
||||
const uint64_t num_keys_;
|
||||
const uint16_t num_sets_;
|
||||
|
||||
// Number of successful insert batches performed
|
||||
uint64_t success_count_ = 0;
|
||||
|
||||
// Number of failed insert batches attempted
|
||||
uint64_t failure_count_ = 0;
|
||||
|
||||
// Status returned by most recent insert operation
|
||||
Status last_status_;
|
||||
|
||||
// optimization: re-use allocated transaction objects.
|
||||
Transaction* txn_ = nullptr;
|
||||
Transaction* optimistic_txn_ = nullptr;
|
||||
|
||||
bool DoInsert(DB* db, Transaction* txn, bool is_optimistic);
|
||||
};
|
||||
|
||||
} // namespace rocksdb
|
||||
|
||||
#endif // ROCKSDB_LITE
|
||||
|
|
@ -6,12 +6,16 @@
|
|||
#ifndef ROCKSDB_LITE
|
||||
|
||||
#include <string>
|
||||
#include <thread>
|
||||
|
||||
#include "rocksdb/db.h"
|
||||
#include "rocksdb/utilities/transaction.h"
|
||||
#include "rocksdb/utilities/optimistic_transaction_db.h"
|
||||
#include "rocksdb/utilities/transaction.h"
|
||||
#include "util/crc32c.h"
|
||||
#include "util/logging.h"
|
||||
#include "util/random.h"
|
||||
#include "util/testharness.h"
|
||||
#include "util/transaction_test_util.h"
|
||||
|
||||
using std::string;
|
||||
|
||||
|
|
@ -1267,88 +1271,70 @@ TEST_F(OptimisticTransactionTest, UndoGetForUpdateTest) {
|
|||
delete txn1;
|
||||
}
|
||||
|
||||
TEST_F(OptimisticTransactionTest, ReinitializeTest) {
|
||||
namespace {
|
||||
Status OptimisticTransactionStressTestInserter(OptimisticTransactionDB* db,
|
||||
const size_t num_transactions,
|
||||
const size_t num_sets,
|
||||
const size_t num_keys_per_set) {
|
||||
size_t seed = std::hash<std::thread::id>()(std::this_thread::get_id());
|
||||
Random64 _rand(seed);
|
||||
WriteOptions write_options;
|
||||
ReadOptions read_options;
|
||||
OptimisticTransactionOptions txn_options;
|
||||
string value;
|
||||
Status s;
|
||||
|
||||
Transaction* txn1 = txn_db->BeginTransaction(write_options, txn_options);
|
||||
|
||||
txn1 = txn_db->BeginTransaction(write_options, txn_options, txn1);
|
||||
|
||||
s = txn1->Put("Z", "z");
|
||||
ASSERT_OK(s);
|
||||
|
||||
s = txn1->Commit();
|
||||
ASSERT_OK(s);
|
||||
|
||||
txn1 = txn_db->BeginTransaction(write_options, txn_options, txn1);
|
||||
|
||||
s = txn1->Put("Z", "zz");
|
||||
ASSERT_OK(s);
|
||||
|
||||
// Reinitilize txn1 and verify that zz is not written
|
||||
txn1 = txn_db->BeginTransaction(write_options, txn_options, txn1);
|
||||
|
||||
s = txn1->Commit();
|
||||
ASSERT_OK(s);
|
||||
s = db->Get(read_options, "Z", &value);
|
||||
ASSERT_OK(s);
|
||||
ASSERT_EQ(value, "z");
|
||||
|
||||
// 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");
|
||||
|
||||
const Snapshot* snapshot = txn1->GetSnapshot();
|
||||
ASSERT_TRUE(snapshot);
|
||||
|
||||
txn1 = txn_db->BeginTransaction(write_options, txn_options, txn1);
|
||||
snapshot = txn1->GetSnapshot();
|
||||
ASSERT_FALSE(snapshot);
|
||||
|
||||
txn_options.set_snapshot = true;
|
||||
txn1 = txn_db->BeginTransaction(write_options, txn_options, txn1);
|
||||
snapshot = txn1->GetSnapshot();
|
||||
ASSERT_TRUE(snapshot);
|
||||
|
||||
s = txn1->Put("Z", "a");
|
||||
RandomTransactionInserter inserter(&_rand, write_options, read_options,
|
||||
num_keys_per_set, num_sets);
|
||||
|
||||
for (size_t t = 0; t < num_transactions; t++) {
|
||||
bool success = inserter.OptimisticTransactionDBInsert(db, txn_options);
|
||||
if (!success) {
|
||||
// unexpected failure
|
||||
return inserter.GetLastStatus();
|
||||
}
|
||||
}
|
||||
|
||||
// Make sure at least some of the transactions succeeded. It's ok if
|
||||
// some failed due to write-conflicts.
|
||||
if (inserter.GetFailureCount() > num_transactions / 2) {
|
||||
return Status::TryAgain("Too many transactions failed! " +
|
||||
std::to_string(inserter.GetFailureCount()) + " / " +
|
||||
std::to_string(num_transactions));
|
||||
}
|
||||
|
||||
return Status::OK();
|
||||
}
|
||||
} // namespace
|
||||
|
||||
TEST_F(OptimisticTransactionTest, OptimisticTransactionStressTest) {
|
||||
const size_t num_threads = 4;
|
||||
const size_t num_transactions_per_thread = 10000;
|
||||
const size_t num_sets = 3;
|
||||
const size_t num_keys_per_set = 100;
|
||||
// Setting the key-space to be 100 keys should cause enough write-conflicts
|
||||
// to make this test interesting.
|
||||
|
||||
std::vector<std::thread> threads;
|
||||
|
||||
std::function<void()> call_inserter = [&] {
|
||||
ASSERT_OK(OptimisticTransactionStressTestInserter(
|
||||
txn_db, num_transactions_per_thread, num_sets, num_keys_per_set));
|
||||
};
|
||||
|
||||
// Create N threads that use RandomTransactionInserter to write
|
||||
// many transactions.
|
||||
for (uint32_t i = 0; i < num_threads; i++) {
|
||||
threads.emplace_back(call_inserter);
|
||||
}
|
||||
|
||||
// Wait for all threads to run
|
||||
for (auto& t : threads) {
|
||||
t.join();
|
||||
}
|
||||
|
||||
// Verify that data is consistent
|
||||
Status s = RandomTransactionInserter::Verify(db, num_sets);
|
||||
ASSERT_OK(s);
|
||||
|
||||
txn1->Rollback();
|
||||
|
||||
s = txn1->Put("Y", "y");
|
||||
ASSERT_OK(s);
|
||||
|
||||
txn_options.set_snapshot = false;
|
||||
txn1 = txn_db->BeginTransaction(write_options, txn_options, txn1);
|
||||
snapshot = txn1->GetSnapshot();
|
||||
ASSERT_FALSE(snapshot);
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
} // namespace rocksdb
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
#ifndef ROCKSDB_LITE
|
||||
|
||||
#include <string>
|
||||
#include <thread>
|
||||
|
||||
#include "db/db_impl.h"
|
||||
#include "rocksdb/db.h"
|
||||
|
|
@ -14,9 +15,11 @@
|
|||
#include "rocksdb/utilities/transaction_db.h"
|
||||
#include "table/mock_table.h"
|
||||
#include "util/logging.h"
|
||||
#include "util/random.h"
|
||||
#include "util/sync_point.h"
|
||||
#include "util/testharness.h"
|
||||
#include "util/testutil.h"
|
||||
#include "util/transaction_test_util.h"
|
||||
#include "utilities/merge_operators.h"
|
||||
#include "utilities/merge_operators/string_append/stringappend.h"
|
||||
|
||||
|
|
@ -2980,6 +2983,72 @@ TEST_F(TransactionTest, ExpiredTransactionDataRace1) {
|
|||
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
|
||||
}
|
||||
|
||||
namespace {
|
||||
Status TransactionStressTestInserter(TransactionDB* db,
|
||||
const size_t num_transactions,
|
||||
const size_t num_sets,
|
||||
const size_t num_keys_per_set) {
|
||||
size_t seed = std::hash<std::thread::id>()(std::this_thread::get_id());
|
||||
Random64 _rand(seed);
|
||||
WriteOptions write_options;
|
||||
ReadOptions read_options;
|
||||
TransactionOptions txn_options;
|
||||
txn_options.set_snapshot = true;
|
||||
|
||||
RandomTransactionInserter inserter(&_rand, write_options, read_options,
|
||||
num_keys_per_set, num_sets);
|
||||
|
||||
for (size_t t = 0; t < num_transactions; t++) {
|
||||
bool success = inserter.TransactionDBInsert(db, txn_options);
|
||||
if (!success) {
|
||||
// unexpected failure
|
||||
return inserter.GetLastStatus();
|
||||
}
|
||||
}
|
||||
|
||||
// Make sure at least some of the transactions succeeded. It's ok if
|
||||
// some failed due to write-conflicts.
|
||||
if (inserter.GetFailureCount() > num_transactions / 2) {
|
||||
return Status::TryAgain("Too many transactions failed! " +
|
||||
std::to_string(inserter.GetFailureCount()) + " / " +
|
||||
std::to_string(num_transactions));
|
||||
}
|
||||
|
||||
return Status::OK();
|
||||
}
|
||||
} // namespace
|
||||
|
||||
TEST_F(TransactionTest, TransactionStressTest) {
|
||||
const size_t num_threads = 4;
|
||||
const size_t num_transactions_per_thread = 10000;
|
||||
const size_t num_sets = 3;
|
||||
const size_t num_keys_per_set = 100;
|
||||
// Setting the key-space to be 100 keys should cause enough write-conflicts
|
||||
// to make this test interesting.
|
||||
|
||||
std::vector<std::thread> threads;
|
||||
|
||||
std::function<void()> call_inserter = [&] {
|
||||
ASSERT_OK(TransactionStressTestInserter(db, num_transactions_per_thread,
|
||||
num_sets, num_keys_per_set));
|
||||
};
|
||||
|
||||
// Create N threads that use RandomTransactionInserter to write
|
||||
// many transactions.
|
||||
for (uint32_t i = 0; i < num_threads; i++) {
|
||||
threads.emplace_back(call_inserter);
|
||||
}
|
||||
|
||||
// Wait for all threads to run
|
||||
for (auto& t : threads) {
|
||||
t.join();
|
||||
}
|
||||
|
||||
// Verify that data is consistent
|
||||
Status s = RandomTransactionInserter::Verify(db, num_sets);
|
||||
ASSERT_OK(s);
|
||||
}
|
||||
|
||||
} // namespace rocksdb
|
||||
|
||||
int main(int argc, char** argv) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue