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1 | // Copyright (c) 2011-present, Facebook, Inc. All rights reserved. |
2 | // This source code is licensed under both the GPLv2 (found in the | |
3 | // COPYING file in the root directory) and Apache 2.0 License | |
4 | // (found in the LICENSE.Apache file in the root directory). | |
5 | ||
6 | #pragma once | |
7 | ||
11fdf7f2 | 8 | #include <algorithm> |
f67539c2 | 9 | #include <cinttypes> |
11fdf7f2 TL |
10 | #include <functional> |
11 | #include <string> | |
12 | #include <thread> | |
13 | ||
f67539c2 | 14 | #include "db/db_impl/db_impl.h" |
20effc67 TL |
15 | #include "db/db_test_util.h" |
16 | #include "port/port.h" | |
11fdf7f2 TL |
17 | #include "rocksdb/db.h" |
18 | #include "rocksdb/options.h" | |
19 | #include "rocksdb/utilities/transaction.h" | |
20 | #include "rocksdb/utilities/transaction_db.h" | |
21 | #include "table/mock_table.h" | |
f67539c2 TL |
22 | #include "test_util/sync_point.h" |
23 | #include "test_util/testharness.h" | |
24 | #include "test_util/testutil.h" | |
25 | #include "test_util/transaction_test_util.h" | |
11fdf7f2 TL |
26 | #include "util/random.h" |
27 | #include "util/string_util.h" | |
20effc67 | 28 | #include "utilities/fault_injection_env.h" |
11fdf7f2 TL |
29 | #include "utilities/merge_operators.h" |
30 | #include "utilities/merge_operators/string_append/stringappend.h" | |
31 | #include "utilities/transactions/pessimistic_transaction_db.h" | |
f67539c2 | 32 | #include "utilities/transactions/write_unprepared_txn_db.h" |
11fdf7f2 | 33 | |
f67539c2 | 34 | namespace ROCKSDB_NAMESPACE { |
11fdf7f2 TL |
35 | |
36 | // Return true if the ith bit is set in combination represented by comb | |
37 | bool IsInCombination(size_t i, size_t comb) { return comb & (size_t(1) << i); } | |
38 | ||
f67539c2 TL |
39 | enum WriteOrdering : bool { kOrderedWrite, kUnorderedWrite }; |
40 | ||
11fdf7f2 TL |
41 | class TransactionTestBase : public ::testing::Test { |
42 | public: | |
43 | TransactionDB* db; | |
20effc67 | 44 | SpecialEnv special_env; |
11fdf7f2 TL |
45 | FaultInjectionTestEnv* env; |
46 | std::string dbname; | |
47 | Options options; | |
48 | ||
49 | TransactionDBOptions txn_db_options; | |
50 | bool use_stackable_db_; | |
51 | ||
52 | TransactionTestBase(bool use_stackable_db, bool two_write_queue, | |
f67539c2 TL |
53 | TxnDBWritePolicy write_policy, |
54 | WriteOrdering write_ordering) | |
20effc67 TL |
55 | : db(nullptr), |
56 | special_env(Env::Default()), | |
57 | env(nullptr), | |
58 | use_stackable_db_(use_stackable_db) { | |
11fdf7f2 TL |
59 | options.create_if_missing = true; |
60 | options.max_write_buffer_number = 2; | |
61 | options.write_buffer_size = 4 * 1024; | |
f67539c2 | 62 | options.unordered_write = write_ordering == kUnorderedWrite; |
11fdf7f2 TL |
63 | options.level0_file_num_compaction_trigger = 2; |
64 | options.merge_operator = MergeOperators::CreateFromStringId("stringappend"); | |
20effc67 TL |
65 | special_env.skip_fsync_ = true; |
66 | env = new FaultInjectionTestEnv(&special_env); | |
11fdf7f2 TL |
67 | options.env = env; |
68 | options.two_write_queues = two_write_queue; | |
69 | dbname = test::PerThreadDBPath("transaction_testdb"); | |
70 | ||
71 | DestroyDB(dbname, options); | |
72 | txn_db_options.transaction_lock_timeout = 0; | |
73 | txn_db_options.default_lock_timeout = 0; | |
74 | txn_db_options.write_policy = write_policy; | |
75 | txn_db_options.rollback_merge_operands = true; | |
f67539c2 TL |
76 | // This will stress write unprepared, by forcing write batch flush on every |
77 | // write. | |
78 | txn_db_options.default_write_batch_flush_threshold = 1; | |
79 | // Write unprepared requires all transactions to be named. This setting | |
80 | // autogenerates the name so that existing tests can pass. | |
81 | txn_db_options.autogenerate_name = true; | |
11fdf7f2 TL |
82 | Status s; |
83 | if (use_stackable_db == false) { | |
84 | s = TransactionDB::Open(options, txn_db_options, dbname, &db); | |
85 | } else { | |
86 | s = OpenWithStackableDB(); | |
87 | } | |
88 | assert(s.ok()); | |
89 | } | |
90 | ||
91 | ~TransactionTestBase() { | |
92 | delete db; | |
93 | db = nullptr; | |
94 | // This is to skip the assert statement in FaultInjectionTestEnv. There | |
95 | // seems to be a bug in btrfs that the makes readdir return recently | |
96 | // unlink-ed files. By using the default fs we simply ignore errors resulted | |
97 | // from attempting to delete such files in DestroyDB. | |
98 | options.env = Env::Default(); | |
99 | DestroyDB(dbname, options); | |
100 | delete env; | |
101 | } | |
102 | ||
103 | Status ReOpenNoDelete() { | |
104 | delete db; | |
105 | db = nullptr; | |
106 | env->AssertNoOpenFile(); | |
107 | env->DropUnsyncedFileData(); | |
108 | env->ResetState(); | |
109 | Status s; | |
110 | if (use_stackable_db_ == false) { | |
111 | s = TransactionDB::Open(options, txn_db_options, dbname, &db); | |
112 | } else { | |
113 | s = OpenWithStackableDB(); | |
114 | } | |
115 | assert(!s.ok() || db != nullptr); | |
116 | return s; | |
117 | } | |
118 | ||
119 | Status ReOpenNoDelete(std::vector<ColumnFamilyDescriptor>& cfs, | |
120 | std::vector<ColumnFamilyHandle*>* handles) { | |
121 | for (auto h : *handles) { | |
122 | delete h; | |
123 | } | |
124 | handles->clear(); | |
125 | delete db; | |
126 | db = nullptr; | |
127 | env->AssertNoOpenFile(); | |
128 | env->DropUnsyncedFileData(); | |
129 | env->ResetState(); | |
130 | Status s; | |
131 | if (use_stackable_db_ == false) { | |
132 | s = TransactionDB::Open(options, txn_db_options, dbname, cfs, handles, | |
133 | &db); | |
134 | } else { | |
135 | s = OpenWithStackableDB(cfs, handles); | |
136 | } | |
f67539c2 | 137 | assert(!s.ok() || db != nullptr); |
11fdf7f2 TL |
138 | return s; |
139 | } | |
140 | ||
141 | Status ReOpen() { | |
142 | delete db; | |
143 | db = nullptr; | |
144 | DestroyDB(dbname, options); | |
145 | Status s; | |
146 | if (use_stackable_db_ == false) { | |
147 | s = TransactionDB::Open(options, txn_db_options, dbname, &db); | |
148 | } else { | |
149 | s = OpenWithStackableDB(); | |
150 | } | |
151 | assert(db != nullptr); | |
152 | return s; | |
153 | } | |
154 | ||
155 | Status OpenWithStackableDB(std::vector<ColumnFamilyDescriptor>& cfs, | |
156 | std::vector<ColumnFamilyHandle*>* handles) { | |
157 | std::vector<size_t> compaction_enabled_cf_indices; | |
158 | TransactionDB::PrepareWrap(&options, &cfs, &compaction_enabled_cf_indices); | |
159 | DB* root_db = nullptr; | |
160 | Options options_copy(options); | |
161 | const bool use_seq_per_batch = | |
162 | txn_db_options.write_policy == WRITE_PREPARED || | |
163 | txn_db_options.write_policy == WRITE_UNPREPARED; | |
164 | const bool use_batch_per_txn = | |
165 | txn_db_options.write_policy == WRITE_COMMITTED || | |
166 | txn_db_options.write_policy == WRITE_PREPARED; | |
167 | Status s = DBImpl::Open(options_copy, dbname, cfs, handles, &root_db, | |
168 | use_seq_per_batch, use_batch_per_txn); | |
169 | StackableDB* stackable_db = new StackableDB(root_db); | |
170 | if (s.ok()) { | |
171 | assert(root_db != nullptr); | |
172 | s = TransactionDB::WrapStackableDB(stackable_db, txn_db_options, | |
173 | compaction_enabled_cf_indices, | |
174 | *handles, &db); | |
175 | } | |
176 | if (!s.ok()) { | |
177 | delete stackable_db; | |
11fdf7f2 TL |
178 | } |
179 | return s; | |
180 | } | |
181 | ||
182 | Status OpenWithStackableDB() { | |
183 | std::vector<size_t> compaction_enabled_cf_indices; | |
184 | std::vector<ColumnFamilyDescriptor> column_families{ColumnFamilyDescriptor( | |
185 | kDefaultColumnFamilyName, ColumnFamilyOptions(options))}; | |
186 | ||
187 | TransactionDB::PrepareWrap(&options, &column_families, | |
188 | &compaction_enabled_cf_indices); | |
189 | std::vector<ColumnFamilyHandle*> handles; | |
190 | DB* root_db = nullptr; | |
191 | Options options_copy(options); | |
192 | const bool use_seq_per_batch = | |
193 | txn_db_options.write_policy == WRITE_PREPARED || | |
194 | txn_db_options.write_policy == WRITE_UNPREPARED; | |
195 | const bool use_batch_per_txn = | |
196 | txn_db_options.write_policy == WRITE_COMMITTED || | |
197 | txn_db_options.write_policy == WRITE_PREPARED; | |
198 | Status s = DBImpl::Open(options_copy, dbname, column_families, &handles, | |
199 | &root_db, use_seq_per_batch, use_batch_per_txn); | |
200 | if (!s.ok()) { | |
201 | delete root_db; | |
202 | return s; | |
203 | } | |
204 | StackableDB* stackable_db = new StackableDB(root_db); | |
205 | assert(root_db != nullptr); | |
206 | assert(handles.size() == 1); | |
207 | s = TransactionDB::WrapStackableDB(stackable_db, txn_db_options, | |
208 | compaction_enabled_cf_indices, handles, | |
209 | &db); | |
210 | delete handles[0]; | |
211 | if (!s.ok()) { | |
212 | delete stackable_db; | |
11fdf7f2 TL |
213 | } |
214 | return s; | |
215 | } | |
216 | ||
217 | std::atomic<size_t> linked = {0}; | |
218 | std::atomic<size_t> exp_seq = {0}; | |
219 | std::atomic<size_t> commit_writes = {0}; | |
220 | std::atomic<size_t> expected_commits = {0}; | |
f67539c2 TL |
221 | // Without Prepare, the commit does not write to WAL |
222 | std::atomic<size_t> with_empty_commits = {0}; | |
11fdf7f2 TL |
223 | std::function<void(size_t, Status)> txn_t0_with_status = [&](size_t index, |
224 | Status exp_s) { | |
225 | // Test DB's internal txn. It involves no prepare phase nor a commit marker. | |
226 | WriteOptions wopts; | |
227 | auto s = db->Put(wopts, "key" + std::to_string(index), "value"); | |
228 | ASSERT_EQ(exp_s, s); | |
229 | if (txn_db_options.write_policy == TxnDBWritePolicy::WRITE_COMMITTED) { | |
230 | // Consume one seq per key | |
231 | exp_seq++; | |
232 | } else { | |
233 | // Consume one seq per batch | |
234 | exp_seq++; | |
235 | if (options.two_write_queues) { | |
236 | // Consume one seq for commit | |
237 | exp_seq++; | |
238 | } | |
239 | } | |
f67539c2 | 240 | with_empty_commits++; |
11fdf7f2 TL |
241 | }; |
242 | std::function<void(size_t)> txn_t0 = [&](size_t index) { | |
243 | return txn_t0_with_status(index, Status::OK()); | |
244 | }; | |
245 | std::function<void(size_t)> txn_t1 = [&](size_t index) { | |
246 | // Testing directly writing a write batch. Functionality-wise it is | |
247 | // equivalent to commit without prepare. | |
248 | WriteBatch wb; | |
249 | auto istr = std::to_string(index); | |
250 | ASSERT_OK(wb.Put("k1" + istr, "v1")); | |
251 | ASSERT_OK(wb.Put("k2" + istr, "v2")); | |
252 | ASSERT_OK(wb.Put("k3" + istr, "v3")); | |
253 | WriteOptions wopts; | |
254 | auto s = db->Write(wopts, &wb); | |
255 | if (txn_db_options.write_policy == TxnDBWritePolicy::WRITE_COMMITTED) { | |
256 | // Consume one seq per key | |
257 | exp_seq += 3; | |
258 | } else { | |
259 | // Consume one seq per batch | |
260 | exp_seq++; | |
261 | if (options.two_write_queues) { | |
262 | // Consume one seq for commit | |
263 | exp_seq++; | |
264 | } | |
265 | } | |
266 | ASSERT_OK(s); | |
f67539c2 | 267 | with_empty_commits++; |
11fdf7f2 TL |
268 | }; |
269 | std::function<void(size_t)> txn_t2 = [&](size_t index) { | |
270 | // Commit without prepare. It should write to DB without a commit marker. | |
271 | TransactionOptions txn_options; | |
272 | WriteOptions write_options; | |
273 | Transaction* txn = db->BeginTransaction(write_options, txn_options); | |
274 | auto istr = std::to_string(index); | |
275 | ASSERT_OK(txn->SetName("xid" + istr)); | |
276 | ASSERT_OK(txn->Put(Slice("foo" + istr), Slice("bar"))); | |
277 | ASSERT_OK(txn->Put(Slice("foo2" + istr), Slice("bar2"))); | |
278 | ASSERT_OK(txn->Put(Slice("foo3" + istr), Slice("bar3"))); | |
279 | ASSERT_OK(txn->Put(Slice("foo4" + istr), Slice("bar4"))); | |
280 | ASSERT_OK(txn->Commit()); | |
281 | if (txn_db_options.write_policy == TxnDBWritePolicy::WRITE_COMMITTED) { | |
282 | // Consume one seq per key | |
283 | exp_seq += 4; | |
f67539c2 TL |
284 | } else if (txn_db_options.write_policy == |
285 | TxnDBWritePolicy::WRITE_PREPARED) { | |
11fdf7f2 TL |
286 | // Consume one seq per batch |
287 | exp_seq++; | |
288 | if (options.two_write_queues) { | |
289 | // Consume one seq for commit | |
290 | exp_seq++; | |
291 | } | |
f67539c2 TL |
292 | } else { |
293 | // Flushed after each key, consume one seq per flushed batch | |
294 | exp_seq += 4; | |
295 | // WriteUnprepared implements CommitWithoutPrepareInternal by simply | |
296 | // calling Prepare then Commit. Consume one seq for the prepare. | |
297 | exp_seq++; | |
11fdf7f2 TL |
298 | } |
299 | delete txn; | |
f67539c2 | 300 | with_empty_commits++; |
11fdf7f2 TL |
301 | }; |
302 | std::function<void(size_t)> txn_t3 = [&](size_t index) { | |
303 | // A full 2pc txn that also involves a commit marker. | |
304 | TransactionOptions txn_options; | |
305 | WriteOptions write_options; | |
306 | Transaction* txn = db->BeginTransaction(write_options, txn_options); | |
307 | auto istr = std::to_string(index); | |
308 | ASSERT_OK(txn->SetName("xid" + istr)); | |
309 | ASSERT_OK(txn->Put(Slice("foo" + istr), Slice("bar"))); | |
310 | ASSERT_OK(txn->Put(Slice("foo2" + istr), Slice("bar2"))); | |
311 | ASSERT_OK(txn->Put(Slice("foo3" + istr), Slice("bar3"))); | |
312 | ASSERT_OK(txn->Put(Slice("foo4" + istr), Slice("bar4"))); | |
313 | ASSERT_OK(txn->Put(Slice("foo5" + istr), Slice("bar5"))); | |
314 | expected_commits++; | |
315 | ASSERT_OK(txn->Prepare()); | |
316 | commit_writes++; | |
317 | ASSERT_OK(txn->Commit()); | |
318 | if (txn_db_options.write_policy == TxnDBWritePolicy::WRITE_COMMITTED) { | |
319 | // Consume one seq per key | |
320 | exp_seq += 5; | |
f67539c2 TL |
321 | } else if (txn_db_options.write_policy == |
322 | TxnDBWritePolicy::WRITE_PREPARED) { | |
11fdf7f2 TL |
323 | // Consume one seq per batch |
324 | exp_seq++; | |
325 | // Consume one seq per commit marker | |
326 | exp_seq++; | |
f67539c2 TL |
327 | } else { |
328 | // Flushed after each key, consume one seq per flushed batch | |
329 | exp_seq += 5; | |
330 | // Consume one seq per commit marker | |
331 | exp_seq++; | |
11fdf7f2 TL |
332 | } |
333 | delete txn; | |
334 | }; | |
335 | std::function<void(size_t)> txn_t4 = [&](size_t index) { | |
336 | // A full 2pc txn that also involves a commit marker. | |
337 | TransactionOptions txn_options; | |
338 | WriteOptions write_options; | |
339 | Transaction* txn = db->BeginTransaction(write_options, txn_options); | |
340 | auto istr = std::to_string(index); | |
341 | ASSERT_OK(txn->SetName("xid" + istr)); | |
342 | ASSERT_OK(txn->Put(Slice("foo" + istr), Slice("bar"))); | |
343 | ASSERT_OK(txn->Put(Slice("foo2" + istr), Slice("bar2"))); | |
344 | ASSERT_OK(txn->Put(Slice("foo3" + istr), Slice("bar3"))); | |
345 | ASSERT_OK(txn->Put(Slice("foo4" + istr), Slice("bar4"))); | |
346 | ASSERT_OK(txn->Put(Slice("foo5" + istr), Slice("bar5"))); | |
347 | expected_commits++; | |
348 | ASSERT_OK(txn->Prepare()); | |
349 | commit_writes++; | |
350 | ASSERT_OK(txn->Rollback()); | |
351 | if (txn_db_options.write_policy == TxnDBWritePolicy::WRITE_COMMITTED) { | |
352 | // No seq is consumed for deleting the txn buffer | |
353 | exp_seq += 0; | |
f67539c2 TL |
354 | } else if (txn_db_options.write_policy == |
355 | TxnDBWritePolicy::WRITE_PREPARED) { | |
11fdf7f2 TL |
356 | // Consume one seq per batch |
357 | exp_seq++; | |
358 | // Consume one seq per rollback batch | |
359 | exp_seq++; | |
360 | if (options.two_write_queues) { | |
361 | // Consume one seq for rollback commit | |
362 | exp_seq++; | |
363 | } | |
f67539c2 TL |
364 | } else { |
365 | // Flushed after each key, consume one seq per flushed batch | |
366 | exp_seq += 5; | |
367 | // Consume one seq per rollback batch | |
368 | exp_seq++; | |
369 | if (options.two_write_queues) { | |
370 | // Consume one seq for rollback commit | |
371 | exp_seq++; | |
372 | } | |
11fdf7f2 TL |
373 | } |
374 | delete txn; | |
375 | }; | |
376 | ||
377 | // Test that we can change write policy after a clean shutdown (which would | |
378 | // empty the WAL) | |
379 | void CrossCompatibilityTest(TxnDBWritePolicy from_policy, | |
380 | TxnDBWritePolicy to_policy, bool empty_wal) { | |
381 | TransactionOptions txn_options; | |
382 | ReadOptions read_options; | |
383 | WriteOptions write_options; | |
384 | uint32_t index = 0; | |
385 | Random rnd(1103); | |
386 | options.write_buffer_size = 1024; // To create more sst files | |
387 | std::unordered_map<std::string, std::string> committed_kvs; | |
388 | Transaction* txn; | |
389 | ||
390 | txn_db_options.write_policy = from_policy; | |
f67539c2 TL |
391 | if (txn_db_options.write_policy == WRITE_COMMITTED) { |
392 | options.unordered_write = false; | |
393 | } | |
11fdf7f2 TL |
394 | ReOpen(); |
395 | ||
396 | for (int i = 0; i < 1024; i++) { | |
397 | auto istr = std::to_string(index); | |
398 | auto k = Slice("foo-" + istr).ToString(); | |
399 | auto v = Slice("bar-" + istr).ToString(); | |
400 | // For test the duplicate keys | |
401 | auto v2 = Slice("bar2-" + istr).ToString(); | |
402 | auto type = rnd.Uniform(4); | |
403 | switch (type) { | |
404 | case 0: | |
405 | committed_kvs[k] = v; | |
406 | ASSERT_OK(db->Put(write_options, k, v)); | |
407 | committed_kvs[k] = v2; | |
408 | ASSERT_OK(db->Put(write_options, k, v2)); | |
409 | break; | |
410 | case 1: { | |
411 | WriteBatch wb; | |
412 | committed_kvs[k] = v; | |
413 | wb.Put(k, v); | |
414 | committed_kvs[k] = v2; | |
415 | wb.Put(k, v2); | |
416 | ASSERT_OK(db->Write(write_options, &wb)); | |
417 | ||
418 | } break; | |
419 | case 2: | |
420 | case 3: | |
421 | txn = db->BeginTransaction(write_options, txn_options); | |
422 | ASSERT_OK(txn->SetName("xid" + istr)); | |
423 | committed_kvs[k] = v; | |
424 | ASSERT_OK(txn->Put(k, v)); | |
425 | committed_kvs[k] = v2; | |
426 | ASSERT_OK(txn->Put(k, v2)); | |
427 | ||
428 | if (type == 3) { | |
429 | ASSERT_OK(txn->Prepare()); | |
430 | } | |
431 | ASSERT_OK(txn->Commit()); | |
432 | delete txn; | |
433 | break; | |
434 | default: | |
435 | assert(0); | |
436 | } | |
437 | ||
438 | index++; | |
439 | } // for i | |
440 | ||
441 | txn_db_options.write_policy = to_policy; | |
f67539c2 TL |
442 | if (txn_db_options.write_policy == WRITE_COMMITTED) { |
443 | options.unordered_write = false; | |
444 | } | |
20effc67 | 445 | auto db_impl = static_cast_with_check<DBImpl>(db->GetRootDB()); |
11fdf7f2 TL |
446 | // Before upgrade/downgrade the WAL must be emptied |
447 | if (empty_wal) { | |
448 | db_impl->TEST_FlushMemTable(); | |
449 | } else { | |
450 | db_impl->FlushWAL(true); | |
451 | } | |
452 | auto s = ReOpenNoDelete(); | |
453 | if (empty_wal) { | |
454 | ASSERT_OK(s); | |
455 | } else { | |
456 | // Test that we can detect the WAL that is produced by an incompatible | |
457 | // WritePolicy and fail fast before mis-interpreting the WAL. | |
458 | ASSERT_TRUE(s.IsNotSupported()); | |
459 | return; | |
460 | } | |
20effc67 | 461 | db_impl = static_cast_with_check<DBImpl>(db->GetRootDB()); |
11fdf7f2 TL |
462 | // Check that WAL is empty |
463 | VectorLogPtr log_files; | |
464 | db_impl->GetSortedWalFiles(log_files); | |
465 | ASSERT_EQ(0, log_files.size()); | |
466 | ||
467 | for (auto& kv : committed_kvs) { | |
468 | std::string value; | |
469 | s = db->Get(read_options, kv.first, &value); | |
470 | if (s.IsNotFound()) { | |
471 | printf("key = %s\n", kv.first.c_str()); | |
472 | } | |
473 | ASSERT_OK(s); | |
474 | if (kv.second != value) { | |
475 | printf("key = %s\n", kv.first.c_str()); | |
476 | } | |
477 | ASSERT_EQ(kv.second, value); | |
478 | } | |
479 | } | |
480 | }; | |
481 | ||
f67539c2 TL |
482 | class TransactionTest |
483 | : public TransactionTestBase, | |
484 | virtual public ::testing::WithParamInterface< | |
485 | std::tuple<bool, bool, TxnDBWritePolicy, WriteOrdering>> { | |
11fdf7f2 TL |
486 | public: |
487 | TransactionTest() | |
488 | : TransactionTestBase(std::get<0>(GetParam()), std::get<1>(GetParam()), | |
f67539c2 | 489 | std::get<2>(GetParam()), std::get<3>(GetParam())){}; |
11fdf7f2 TL |
490 | }; |
491 | ||
492 | class TransactionStressTest : public TransactionTest {}; | |
493 | ||
494da23a TL |
494 | class MySQLStyleTransactionTest |
495 | : public TransactionTestBase, | |
496 | virtual public ::testing::WithParamInterface< | |
f67539c2 | 497 | std::tuple<bool, bool, TxnDBWritePolicy, WriteOrdering, bool>> { |
494da23a TL |
498 | public: |
499 | MySQLStyleTransactionTest() | |
500 | : TransactionTestBase(std::get<0>(GetParam()), std::get<1>(GetParam()), | |
f67539c2 TL |
501 | std::get<2>(GetParam()), std::get<3>(GetParam())), |
502 | with_slow_threads_(std::get<4>(GetParam())) { | |
494da23a TL |
503 | if (with_slow_threads_ && |
504 | (txn_db_options.write_policy == WRITE_PREPARED || | |
505 | txn_db_options.write_policy == WRITE_UNPREPARED)) { | |
506 | // The corner case with slow threads involves the caches filling | |
507 | // over which would not happen even with artifial delays. To help | |
508 | // such cases to show up we lower the size of the cache-related data | |
509 | // structures. | |
510 | txn_db_options.wp_snapshot_cache_bits = 1; | |
511 | txn_db_options.wp_commit_cache_bits = 10; | |
f67539c2 | 512 | options.write_buffer_size = 1024; |
494da23a TL |
513 | EXPECT_OK(ReOpen()); |
514 | } | |
515 | }; | |
516 | ||
517 | protected: | |
518 | // Also emulate slow threads by addin artiftial delays | |
519 | const bool with_slow_threads_; | |
520 | }; | |
11fdf7f2 | 521 | |
f67539c2 | 522 | } // namespace ROCKSDB_NAMESPACE |