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fault_injection_test: to support file closed after being deleted

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Summary: fault_injection_test occasionally fails because file closing can happen after deletion. Improve the test to support it.

Test Plan: I have a new test case I'm working on, where the issue appears almost every time. With the patch, the problem goes away.

Reviewers: rven, yhchiang, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D32373
This commit is contained in:
sdong 2015-01-27 16:34:16 -08:00
parent e8bf2310a0
commit d2a2b058f0
1 changed files with 13 additions and 3 deletions
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16
db/fault_injection_test.cc
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@ -90,7 +90,7 @@ Status Truncate(const std::string& filename, uint64_t length) {
if (s.ok()) {
s = env->RenameFile(tmp_name, filename);
} else {
fprintf(stderr, "Cannot renmae file %s to %s: %s\n", tmp_name.c_str(),
fprintf(stderr, "Cannot rename file %s to %s: %s\n", tmp_name.c_str(),
filename.c_str(), s.ToString().c_str());
env->DeleteFile(tmp_name);
}
@ -193,7 +193,7 @@ class FaultInjectionTestEnv : public EnvWrapper {
// again then it will be truncated - so forget our saved state.
UntrackFile(fname);
MutexLock l(&mutex_);
open_files_.insert(fname);
auto dir_and_name = GetDirAndName(fname);
auto& list = dir_to_new_files_since_last_sync_[dir_and_name.first];
list.insert(dir_and_name.second);
@ -238,7 +238,10 @@ class FaultInjectionTestEnv : public EnvWrapper {
void WritableFileClosed(const FileState& state) {
MutexLock l(&mutex_);
db_file_state_[state.filename_] = state;
if (open_files_.find(state.filename_) != open_files_.end()) {
db_file_state_[state.filename_] = state;
open_files_.erase(state.filename_);
}
}
// For every file that is not fully synced, make a call to `func` with
@ -280,6 +283,9 @@ class FaultInjectionTestEnv : public EnvWrapper {
for (auto& pair : map_copy) {
for (std::string name : pair.second) {
Status s = DeleteFile(pair.first + "/" + name);
if (!s.ok()) {
return s;
}
}
}
return Status::OK();
@ -297,6 +303,7 @@ class FaultInjectionTestEnv : public EnvWrapper {
dir_to_new_files_since_last_sync_[dir_and_name.first].erase(
dir_and_name.second);
db_file_state_.erase(f);
open_files_.erase(f);
}
void SyncDir(const std::string& dirname) {
@ -317,10 +324,12 @@ class FaultInjectionTestEnv : public EnvWrapper {
MutexLock l(&mutex_);
SetFilesystemActiveNoLock(active);
}
void AssertNoOpenFile() { ASSERT_TRUE(open_files_.empty()); }
private:
port::Mutex mutex_;
std::map<std::string, FileState> db_file_state_;
std::set<std::string> open_files_;
std::unordered_map<std::string, std::set<std::string>>
dir_to_new_files_since_last_sync_;
bool filesystem_active_; // Record flushes, syncs, writes
@ -610,6 +619,7 @@ class FaultInjectionTest {
// rnd cannot be null for kResetDropRandomUnsyncedData
void ResetDBState(ResetMethod reset_method, Random* rnd = nullptr) {
env_->AssertNoOpenFile();
switch (reset_method) {
case kResetDropUnsyncedData:
ASSERT_OK(env_->DropUnsyncedFileData());