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fix: brpoplpush single shard to wake up blocked transactions (#2875)

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* wake up blocked transactions on single shard
This commit is contained in:
Kostas Kyrimis 2024-04-10 16:59:33 +03:00 • committed by GitHub
parent 3e270fee53
commit 56a7f85e39
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2 changed files with 30 additions and 3 deletions
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16
src/server/list_family.cc
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@ -850,10 +850,20 @@ OpResult<string> BPopPusher::RunSingle(ConnectionContext* cntx, time_point tp) {
auto cb_move = [&](Transaction* t, EngineShard* shard) {
OpArgs op_args = t->GetOpArgs(shard);
op_res = OpMoveSingleShard(op_args, pop_key_, push_key_, popdir_, pushdir_);
if (op_res && op_args.shard->journal()) {
std::array<string_view, 4> arr = {pop_key_, push_key_, DirToSv(popdir_), DirToSv(pushdir_)};
RecordJournal(op_args, "LMOVE", arr, 1);
if (op_res) {
if (op_args.shard->journal()) {
std::array<string_view, 4> arr = {pop_key_, push_key_, DirToSv(popdir_), DirToSv(pushdir_)};
RecordJournal(op_args, "LMOVE", arr, 1);
}
if (shard->blocking_controller()) {
string tmp;
shard->blocking_controller()->AwakeWatched(op_args.db_cntx.db_index, push_key_);
absl::StrAppend(debugMessages.Next(), "OpPush AwakeWatched: ", push_key_, " by ",
op_args.tx->DebugId());
}
}
return OpStatus::OK;
};
t->Execute(cb_move, false);

17
src/server/list_family_test.cc
View file

@ -642,6 +642,23 @@ TEST_F(ListFamilyTest, BRPopLPushSingleShard) {
ASSERT_EQ(0, NumWatched());
}
TEST_F(ListFamilyTest, BRPopLPushSingleShardBug2857) {
Run({"lpush", "src", "val1"});
RespExpr resp;
auto blpop = [&]() { resp = Run("id", {"blpop", "dest", "4"}); };
auto f = pp_->at(1)->LaunchFiber(Launch::dispatch, blpop);
EXPECT_THAT(Run({"brpoplpush", "src", "dest", "1"}), "val1");
f.Join();
EXPECT_THAT(resp, ArgType(RespExpr::ARRAY));
EXPECT_THAT(resp.GetVec(), ElementsAre("dest", "val1"));
// Timeout
f = pp_->at(1)->LaunchFiber(Launch::dispatch, blpop);
EXPECT_THAT(Run({"brpoplpush", "src", "dest", "1"}), ArgType(RespExpr::NIL));
f.Join();
EXPECT_THAT(resp, ArgType(RespExpr::NIL_ARRAY));
}
TEST_F(ListFamilyTest, BRPopLPushSingleShardBlocking) {
RespExpr resp;