mirror of
https://github.com/dragonflydb/dragonfly.git
synced 2025-05-11 10:25:47 +02:00
bug(server): multi exec eval (#1541)
* The bug - if all commands inside multi trasaction are eval commands and global scripts mode is on, we did ignored the trasaction and run each eval separately. *Fix - run all evals under multi inside the global lock * Change multi eval run only if scripts are in global mode and multi mode is not non atomic * Fix test flags setup * Skip test ContendedList as it fails * change default exec mode for txs to lock ahead
This commit is contained in:
adiholden
GitHub
parent
f8e0892637
commit
c411362693
3 changed files with 83 additions and 75 deletions
2
.github/workflows/ci.yml
vendored
2
.github/workflows/ci.yml
vendored
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@ -97,7 +97,7 @@ jobs:
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#GLOG_logtostderr=1 GLOG_vmodule=transaction=1,engine_shard_set=1
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GLOG_logtostderr=1 GLOG_vmodule=rdb_load=1,rdb_save=1,snapshot=1 ctest -V -L DFLY
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./dragonfly_test --gtest_repeat=10
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./multi_test --multi_exec_mode=2 --gtest_repeat=10
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./multi_test --multi_exec_mode=1 --gtest_repeat=10
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./multi_test --multi_exec_mode=3 --gtest_repeat=10
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# GLOG_logtostderr=1 GLOG_vmodule=transaction=1,engine_shard_set=1 CTEST_OUTPUT_ON_FAILURE=1 ninja server/test
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lint-test-chart:
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@ -60,7 +60,7 @@ ABSL_FLAG(uint32_t, memcached_port, 0, "Memcached port");
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ABSL_FLAG(uint32_t, num_shards, 0, "Number of database shards, 0 - to choose automatically");
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ABSL_FLAG(uint32_t, multi_exec_mode, 1,
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ABSL_FLAG(uint32_t, multi_exec_mode, 2,
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"Set multi exec atomicity mode: 1 for global, 2 for locking ahead, 3 for non atomic");
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ABSL_FLAG(bool, multi_exec_squash, true,
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@ -1576,37 +1576,19 @@ void Service::Exec(CmdArgList args, ConnectionContext* cntx) {
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CmdArgVec arg_vec, tmp_keys;
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// We ignore transaction mode in case it's filled only with EVAL-like commands.
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// This is done to support OptimalBits/bull js framework
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// that for some reason uses MULTI to send multiple jobs via EVAL(SHA) commands,
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// instead of using pipeline mode.
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// TODO: to check with BullMQ developers if this is a bug or a feature.
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if (state == ExecEvalState::ALL) {
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string cmd_name;
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auto body = move(exec_info.body);
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exec_info.Clear();
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Transaction* trans = cntx->transaction;
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cntx->transaction = nullptr;
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SinkReplyBuilder::ReplyAggregator agg(rb);
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rb->StartArray(body.size());
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for (auto& scmd : body) {
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arg_vec.resize(scmd.NumArgs() + 1);
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// We need to copy command name to the first argument.
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cmd_name = scmd.Cid()->name();
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arg_vec.front() = MutableSlice{cmd_name.data(), cmd_name.size()};
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auto args = absl::MakeSpan(arg_vec);
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scmd.Fill(args.subspan(1));
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DispatchCommand(args, cntx);
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}
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cntx->transaction = trans;
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return;
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}
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// Check if script most LIKELY has global eval transactions
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bool global_script = (state == ExecEvalState::SOME) && script_mgr()->AreGlobalByDefault();
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bool global_script = script_mgr()->AreGlobalByDefault();
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int multi_mode = absl::GetFlag(FLAGS_multi_exec_mode);
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if (state != ExecEvalState::NONE) {
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// Allow multi eval only when scripts run global and multi runs in global or lock ahead
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// We adjust the atomicity level of multi transaction inside StartMultiExec i.e if multi mode is
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// lock ahead and we run global script in the transaction then multi mode will be global.
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if (!global_script || (multi_mode == Transaction::NON_ATOMIC)) {
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return rb->SendError(
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"Dragonfly does not allow execution of a server-side Lua in Multi transaction");
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}
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}
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bool scheduled =
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StartMultiExec(cntx->db_index(), cntx->transaction, &exec_info, &tmp_keys, global_script);
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@ -2,6 +2,7 @@
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// See LICENSE for licensing terms.
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//
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#include <absl/flags/reflection.h>
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#include <absl/strings/str_cat.h>
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#include <gmock/gmock.h>
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@ -58,33 +59,6 @@ TEST_F(MultiTest, VerifyConstants) {
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ASSERT_EQ(3, GetDebugInfo().shards_count);
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}
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TEST_F(MultiTest, MultiAndEval) {
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GTEST_SKIP() << "Eval is allowed in multi experimentally";
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ShardId sid1 = Shard(kKey1, num_threads_ - 1);
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ShardId sid2 = Shard(kKey2, num_threads_ - 1);
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ShardId sid3 = Shard(kKey3, num_threads_ - 1);
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ShardId sid4 = Shard(kKey4, num_threads_ - 1);
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EXPECT_EQ(0, sid1);
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EXPECT_EQ(2, sid2);
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EXPECT_EQ(1, sid3);
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EXPECT_EQ(0, sid4);
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RespExpr resp = Run({"multi"});
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ASSERT_EQ(resp, "OK");
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resp = Run({"get", kKey1});
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ASSERT_EQ(resp, "QUEUED");
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resp = Run({"get", kKey4});
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ASSERT_EQ(resp, "QUEUED");
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resp = Run({"eval", "return redis.call('exists', KEYS[2])", "2", "a", "b"});
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ASSERT_EQ(resp, "QUEUED");
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resp = Run({"exec"});
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ASSERT_THAT(resp, ErrArg("ERR Dragonfly does not allow execution of a server-side Lua"));
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}
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TEST_F(MultiTest, MultiAndFlush) {
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RespExpr resp = Run({"multi"});
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ASSERT_EQ(resp, "OK");
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@ -197,9 +171,10 @@ TEST_F(MultiTest, MultiSeq) {
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}
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TEST_F(MultiTest, MultiConsistent) {
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int multi_mode = absl::GetFlag(FLAGS_multi_exec_mode);
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if (multi_mode == Transaction::NON_ATOMIC)
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if (auto mode = absl::GetFlag(FLAGS_multi_exec_mode); mode == Transaction::NON_ATOMIC) {
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GTEST_SKIP() << "Skipped MultiConsistent test because multi_exec_mode is non atomic";
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return;
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}
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Run({"mset", kKey1, "base", kKey4, "base"});
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@ -245,16 +220,6 @@ TEST_F(MultiTest, MultiConsistent) {
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ASSERT_FALSE(service_->IsShardSetLocked());
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}
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TEST_F(MultiTest, MultiAllEval) {
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Run({"multi"});
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EXPECT_EQ(Run({"eval", "return 42", "0"}), "QUEUED");
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EXPECT_EQ(Run({"eval", "return 77", "0"}), "QUEUED");
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auto resp = Run({"exec"});
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ASSERT_THAT(resp, ArrLen(2));
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EXPECT_THAT(resp.GetVec()[0], IntArg(42));
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EXPECT_THAT(resp.GetVec()[1], IntArg(77));
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}
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TEST_F(MultiTest, MultiRename) {
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RespExpr resp = Run({"mget", kKey1, kKey4});
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ASSERT_EQ(1, GetDebugInfo().shards_count);
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@ -341,7 +306,7 @@ TEST_F(MultiTest, FlushDb) {
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TEST_F(MultiTest, Eval) {
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if (auto config = absl::GetFlag(FLAGS_default_lua_flags); config != "") {
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LOG(WARNING) << "Skipped Eval test because default_lua_flags is set";
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GTEST_SKIP() << "Skipped Eval test because default_lua_flags is set";
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return;
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}
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@ -523,7 +488,7 @@ TEST_F(MultiTest, MultiOOO) {
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// Lua scripts lock their keys ahead and thus can run out of order.
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TEST_F(MultiTest, EvalOOO) {
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if (auto config = absl::GetFlag(FLAGS_default_lua_flags); config != "") {
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LOG(WARNING) << "Skipped Eval test because default_lua_flags is set";
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GTEST_SKIP() << "Skipped EvalOOO test because default_lua_flags is set";
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return;
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}
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@ -615,6 +580,7 @@ TEST_F(MultiTest, MultiCauseUnblocking) {
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}
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TEST_F(MultiTest, ExecGlobalFallback) {
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absl::FlagSaver fs;
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// Check global command MOVE falls back to global mode from lock ahead.
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absl::SetFlag(&FLAGS_multi_exec_mode, Transaction::LOCK_AHEAD);
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Run({"multi"});
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@ -635,7 +601,7 @@ TEST_F(MultiTest, ExecGlobalFallback) {
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TEST_F(MultiTest, ScriptFlagsCommand) {
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if (auto flags = absl::GetFlag(FLAGS_default_lua_flags); flags != "") {
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LOG(WARNING) << "Skipped Eval test because default_lua_flags is set";
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GTEST_SKIP() << "Skipped ScriptFlagsCommand test because default_lua_flags is set";
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return;
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}
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@ -690,8 +656,12 @@ TEST_F(MultiTest, ScriptFlagsEmbedded) {
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// Run multi-exec transactions that move values from a source list
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// to destination list through two contended channels.
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TEST_F(MultiTest, ContendedList) {
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if (absl::GetFlag(FLAGS_multi_exec_mode) == Transaction::NON_ATOMIC)
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if (auto mode = absl::GetFlag(FLAGS_multi_exec_mode); mode == Transaction::NON_ATOMIC) {
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GTEST_SKIP() << "Skipped ContendedList test because multi_exec_mode is non atomic";
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return;
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}
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GTEST_SKIP() << "Test fails, we need to check why";
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constexpr int listSize = 50;
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constexpr int stepSize = 5;
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@ -730,6 +700,7 @@ TEST_F(MultiTest, ContendedList) {
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// Test that squashing makes single-key ops atomic withing a non-atomic tx
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// because it runs them within one hop.
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TEST_F(MultiTest, TestSquashing) {
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absl::FlagSaver fs;
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absl::SetFlag(&FLAGS_multi_exec_squash, true);
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absl::SetFlag(&FLAGS_multi_exec_mode, Transaction::LOCK_AHEAD);
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@ -756,4 +727,59 @@ TEST_F(MultiTest, TestSquashing) {
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f1.Join();
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}
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class MultiEvalTest : public BaseFamilyTest {
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protected:
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MultiEvalTest() : BaseFamilyTest() {
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num_threads_ = kPoolThreadCount;
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absl::SetFlag(&FLAGS_default_lua_flags, "allow-undeclared-keys");
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}
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absl::FlagSaver fs_;
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};
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TEST_F(MultiEvalTest, MultiAllEval) {
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if (auto mode = absl::GetFlag(FLAGS_multi_exec_mode); mode == Transaction::NON_ATOMIC) {
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GTEST_SKIP() << "Skipped MultiAllEval test because multi_exec_mode is non atomic";
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return;
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}
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RespExpr brpop_resp;
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// Run the fiber at creation.
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auto fb0 = pp_->at(1)->LaunchFiber(Launch::dispatch, [&] {
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brpop_resp = Run({"brpop", "x", "1"});
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});
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Run({"multi"});
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Run({"eval", "return redis.call('lpush', 'x', 'y')", "0"});
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Run({"eval", "return redis.call('lpop', 'x')", "0"});
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RespExpr exec_resp = Run({"exec"});
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fb0.Join();
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EXPECT_THAT(exec_resp.GetVec(), ElementsAre(IntArg(1), "y"));
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EXPECT_THAT(brpop_resp, ArgType(RespExpr::NIL_ARRAY));
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}
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TEST_F(MultiEvalTest, MultiSomeEval) {
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if (auto mode = absl::GetFlag(FLAGS_multi_exec_mode); mode == Transaction::NON_ATOMIC) {
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GTEST_SKIP() << "Skipped MultiAllEval test because multi_exec_mode is non atomic";
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return;
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}
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RespExpr brpop_resp;
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// Run the fiber at creation.
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auto fb0 = pp_->at(1)->LaunchFiber(Launch::dispatch, [&] {
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brpop_resp = Run({"brpop", "x", "1"});
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});
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Run({"multi"});
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Run({"eval", "return redis.call('lpush', 'x', 'y')", "0"});
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Run({"lpop", "x"});
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RespExpr exec_resp = Run({"exec"});
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fb0.Join();
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EXPECT_THAT(exec_resp.GetVec(), ElementsAre(IntArg(1), "y"));
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EXPECT_THAT(brpop_resp, ArgType(RespExpr::NIL_ARRAY));
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}
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} // namespace dfly
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