andreacavalli/rocksdb
0
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Avoiding write stall caused by manual flushes (#4297)

Browse Source 
Summary:
Basically at the moment it seems it's possible to cause write stall by calling flush (either manually vis DB::Flush(), or from Backup Engine directly calling FlushMemTable() while background flush may be already happening.

One of the ways to fix it is that in DBImpl::CompactRange() we already check for possible stall and delay flush if needed before we actually proceed to call FlushMemTable(). We can simply move this delay logic to separate method and call it from FlushMemTable.

This is draft patch, for first look; need to check tests/update SyncPoints and most certainly would need to add allow_write_stall method to FlushOptions().
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4297

Differential Revision: D9420705

Pulled By: mikhail-antonov

fbshipit-source-id: f81d206b55e1d7b39e4dc64242fdfbceeea03fcc
This commit is contained in:
Mikhail Antonov 2018-08-29 11:58:13 -07:00 committed by Facebook Github Bot
parent 5f63a89b35
commit 927f274939
10 changed files with 135 additions and 91 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
HISTORY.md
View File

@ -2,6 +2,7 @@
## Unreleased
### Public API Change
* `OnTableFileCreated` will now be called for empty files generated during compaction. In that case, `TableFileCreationInfo::file_path` will be "(nil)" and `TableFileCreationInfo::file_size` will be zero.
* Add `FlushOptions::allow_write_stall`, which controls whether Flush calls start working immediately, even if it causes user writes to stall, or will wait until flush can be performed without causing write stall (similar to `CompactRangeOptions::allow_write_stall`). Note that the default value is false, meaning we add delay to Flush calls until stalling can be avoided when possible. This is behavior change compared to previous RocksDB versions, where Flush calls didn't check if they might cause stall or not.
### New Features
### Bug Fixes
@ -10,7 +11,7 @@
## 5.16.0 (8/21/2018)
### Public API Change
* The merge operands are passed to `MergeOperator::ShouldMerge` in the reversed order relative to how they were merged (passed to FullMerge or FullMergeV2) for performance reasons
* The merge operands are passed to `MergeOperator::ShouldMerge` in the reversed order relative to how they were merged (passed to FullMerge or FullMergeV2) for performance reasons
* GetAllKeyVersions() to take an extra argument of `max_num_ikeys`.
* Using ZSTD dictionary trainer (i.e., setting `CompressionOptions::zstd_max_train_bytes` to a nonzero value) now requires ZSTD version 1.1.3 or later.

26
db/db_compaction_test.cc
View File

@ -3485,12 +3485,13 @@ TEST_F(DBCompactionTest, CompactRangeDelayedByL0FileCount) {
// ensure the auto compaction doesn't finish until manual compaction has
// had a chance to be delayed.
rocksdb::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::CompactRange:StallWait", "CompactionJob::Run():End"}});
{{"DBImpl::WaitUntilFlushWouldNotStallWrites:StallWait",
"CompactionJob::Run():End"}});
} else {
// ensure the auto-compaction doesn't finish until manual compaction has
// continued without delay.
rocksdb::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::CompactRange:StallWaitDone", "CompactionJob::Run():End"}});
{{"DBImpl::FlushMemTable:StallWaitDone", "CompactionJob::Run():End"}});
}
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
@ -3538,12 +3539,13 @@ TEST_F(DBCompactionTest, CompactRangeDelayedByImmMemTableCount) {
// ensure the flush doesn't finish until manual compaction has had a
// chance to be delayed.
rocksdb::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::CompactRange:StallWait", "FlushJob::WriteLevel0Table"}});
{{"DBImpl::WaitUntilFlushWouldNotStallWrites:StallWait",
"FlushJob::WriteLevel0Table"}});
} else {
// ensure the flush doesn't finish until manual compaction has continued
// without delay.
rocksdb::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::CompactRange:StallWaitDone",
{{"DBImpl::FlushMemTable:StallWaitDone",
"FlushJob::WriteLevel0Table"}});
}
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
@ -3553,6 +3555,7 @@ TEST_F(DBCompactionTest, CompactRangeDelayedByImmMemTableCount) {
ASSERT_OK(Put(Key(0), RandomString(&rnd, 1024)));
FlushOptions flush_opts;
flush_opts.wait = false;
flush_opts.allow_write_stall = true;
dbfull()->Flush(flush_opts);
}
@ -3588,7 +3591,7 @@ TEST_F(DBCompactionTest, CompactRangeShutdownWhileDelayed) {
// The auto-compaction waits until the manual compaction finishes to ensure
// the signal comes from closing CF/DB, not from compaction making progress.
rocksdb::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::CompactRange:StallWait",
{{"DBImpl::WaitUntilFlushWouldNotStallWrites:StallWait",
"DBCompactionTest::CompactRangeShutdownWhileDelayed:PreShutdown"},
{"DBCompactionTest::CompactRangeShutdownWhileDelayed:PostManual",
"CompactionJob::Run():End"}});
@ -3639,18 +3642,21 @@ TEST_F(DBCompactionTest, CompactRangeSkipFlushAfterDelay) {
// began. So it unblocks CompactRange and precludes its flush. Throughout the
// test, stall conditions are upheld via high L0 file count.
rocksdb::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::CompactRange:StallWait",
{{"DBImpl::WaitUntilFlushWouldNotStallWrites:StallWait",
"DBCompactionTest::CompactRangeSkipFlushAfterDelay:PreFlush"},
{"DBCompactionTest::CompactRangeSkipFlushAfterDelay:PostFlush",
"DBImpl::CompactRange:StallWaitDone"},
{"DBImpl::CompactRange:StallWaitDone", "CompactionJob::Run():End"}});
"DBImpl::FlushMemTable:StallWaitDone"},
{"DBImpl::FlushMemTable:StallWaitDone", "CompactionJob::Run():End"}});
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
//used for the delayable flushes
FlushOptions flush_opts;
flush_opts.allow_write_stall = true;
for (int i = 0; i < kNumL0FilesLimit - 1; ++i) {
for (int j = 0; j < 2; ++j) {
ASSERT_OK(Put(Key(j), RandomString(&rnd, 1024)));
}
Flush();
dbfull()->Flush(flush_opts);
}
auto manual_compaction_thread = port::Thread([this]() {
CompactRangeOptions cro;
@ -3660,7 +3666,7 @@ TEST_F(DBCompactionTest, CompactRangeSkipFlushAfterDelay) {
TEST_SYNC_POINT("DBCompactionTest::CompactRangeSkipFlushAfterDelay:PreFlush");
Put(ToString(0), RandomString(&rnd, 1024));
Flush();
dbfull()->Flush(flush_opts);
Put(ToString(0), RandomString(&rnd, 1024));
TEST_SYNC_POINT("DBCompactionTest::CompactRangeSkipFlushAfterDelay:PostFlush");
manual_compaction_thread.join();

1
db/db_flush_test.cc
View File

@ -35,6 +35,7 @@ TEST_F(DBFlushTest, FlushWhileWritingManifest) {
Reopen(options);
FlushOptions no_wait;
no_wait.wait = false;
no_wait.allow_write_stall=true;
SyncPoint::GetInstance()->LoadDependency(
{{"VersionSet::LogAndApply:WriteManifest",

6
db/db_impl.h
View File

@ -396,7 +396,7 @@ class DBImpl : public DB {
Status TEST_SwitchMemtable(ColumnFamilyData* cfd = nullptr);
// Force current memtable contents to be flushed.
Status TEST_FlushMemTable(bool wait = true,
Status TEST_FlushMemTable(bool wait = true, bool allow_write_stall = false,
ColumnFamilyHandle* cfh = nullptr);
// Wait for memtable compaction
@ -946,6 +946,10 @@ class DBImpl : public DB {
Status FlushMemTable(ColumnFamilyData* cfd, const FlushOptions& options,
FlushReason flush_reason, bool writes_stopped = false);
// Wait until flushing this column family won't stall writes
Status WaitUntilFlushWouldNotStallWrites(ColumnFamilyData* cfd,
bool* flush_needed);
// Wait for memtable flushed.
// If flush_memtable_id is non-null, wait until the memtable with the ID
// gets flush. Otherwise, wait until the column family don't have any

127
db/db_impl_compaction_flush.cc
View File

@ -344,60 +344,12 @@ Status DBImpl::CompactRange(const CompactRangeOptions& options,
CleanupSuperVersion(super_version);
}
if (!options.allow_write_stall && flush_needed) {
InstrumentedMutexLock l(&mutex_);
uint64_t orig_active_memtable_id = cfd->mem()->GetID();
WriteStallCondition write_stall_condition = WriteStallCondition::kNormal;
do {
if (write_stall_condition != WriteStallCondition::kNormal) {
TEST_SYNC_POINT("DBImpl::CompactRange:StallWait");
ROCKS_LOG_INFO(immutable_db_options_.info_log,
"[%s] CompactRange waiting on stall conditions to clear",
cfd->GetName().c_str());
bg_cv_.Wait();
}
if (cfd->IsDropped() || shutting_down_.load(std::memory_order_acquire)) {
return Status::ShutdownInProgress();
}
uint64_t earliest_memtable_id =
std::min(cfd->mem()->GetID(), cfd->imm()->GetEarliestMemTableID());
if (earliest_memtable_id > orig_active_memtable_id) {
// We waited so long that the memtable we were originally waiting on was
// flushed.
flush_needed = false;
break;
}
const auto& mutable_cf_options = *cfd->GetLatestMutableCFOptions();
const auto* vstorage = cfd->current()->storage_info();
// Skip stalling check if we're below auto-flush and auto-compaction
// triggers. If it stalled in these conditions, that'd mean the stall
// triggers are so low that stalling is needed for any background work. In
// that case we shouldn't wait since background work won't be scheduled.
if (cfd->imm()->NumNotFlushed() <
cfd->ioptions()->min_write_buffer_number_to_merge &&
vstorage->l0_delay_trigger_count() <
mutable_cf_options.level0_file_num_compaction_trigger) {
break;
}
// check whether one extra immutable memtable or an extra L0 file would
// cause write stalling mode to be entered. It could still enter stall
// mode due to pending compaction bytes, but that's less common
write_stall_condition =
ColumnFamilyData::GetWriteStallConditionAndCause(
cfd->imm()->NumNotFlushed() + 1,
vstorage->l0_delay_trigger_count() + 1,
vstorage->estimated_compaction_needed_bytes(), mutable_cf_options)
.first;
} while (write_stall_condition != WriteStallCondition::kNormal);
}
TEST_SYNC_POINT("DBImpl::CompactRange:StallWaitDone");
Status s;
if (flush_needed) {
s = FlushMemTable(cfd, FlushOptions(), FlushReason::kManualCompaction);
FlushOptions fo;
fo.allow_write_stall = options.allow_write_stall;
s = FlushMemTable(cfd, fo, FlushReason::kManualCompaction,
false /* writes_stopped*/);
if (!s.ok()) {
LogFlush(immutable_db_options_.info_log);
return s;
@ -1097,6 +1049,14 @@ Status DBImpl::FlushMemTable(ColumnFamilyData* cfd,
FlushReason flush_reason, bool writes_stopped) {
Status s;
uint64_t flush_memtable_id = 0;
if (!flush_options.allow_write_stall) {
bool flush_needed = true;
s = WaitUntilFlushWouldNotStallWrites(cfd, &flush_needed);
TEST_SYNC_POINT("DBImpl::FlushMemTable:StallWaitDone");
if (!s.ok() || !flush_needed) {
return s;
}
}
FlushRequest flush_req;
{
WriteContext context;
@ -1141,6 +1101,69 @@ Status DBImpl::FlushMemTable(ColumnFamilyData* cfd,
return s;
}
// Calling FlushMemTable(), whether from DB::Flush() or from Backup Engine, can
// cause write stall, for example if one memtable is being flushed already.
// This method tries to avoid write stall (similar to CompactRange() behavior)
// it emulates how the SuperVersion / LSM would change if flush happens, checks
// it against various constrains and delays flush if it'd cause write stall.
// Called should check status and flush_needed to see if flush already happened.
Status DBImpl::WaitUntilFlushWouldNotStallWrites(ColumnFamilyData* cfd,
bool* flush_needed) {
{
*flush_needed = true;
InstrumentedMutexLock l(&mutex_);
uint64_t orig_active_memtable_id = cfd->mem()->GetID();
WriteStallCondition write_stall_condition = WriteStallCondition::kNormal;
do {
if (write_stall_condition != WriteStallCondition::kNormal) {
TEST_SYNC_POINT("DBImpl::WaitUntilFlushWouldNotStallWrites:StallWait");
ROCKS_LOG_INFO(immutable_db_options_.info_log,
"[%s] WaitUntilFlushWouldNotStallWrites"
" waiting on stall conditions to clear",
cfd->GetName().c_str());
bg_cv_.Wait();
}
if (cfd->IsDropped() || shutting_down_.load(std::memory_order_acquire)) {
return Status::ShutdownInProgress();
}
uint64_t earliest_memtable_id =
std::min(cfd->mem()->GetID(), cfd->imm()->GetEarliestMemTableID());
if (earliest_memtable_id > orig_active_memtable_id) {
// We waited so long that the memtable we were originally waiting on was
// flushed.
*flush_needed = false;
return Status::OK();
}
const auto& mutable_cf_options = *cfd->GetLatestMutableCFOptions();
const auto* vstorage = cfd->current()->storage_info();
// Skip stalling check if we're below auto-flush and auto-compaction
// triggers. If it stalled in these conditions, that'd mean the stall
// triggers are so low that stalling is needed for any background work. In
// that case we shouldn't wait since background work won't be scheduled.
if (cfd->imm()->NumNotFlushed() <
cfd->ioptions()->min_write_buffer_number_to_merge &&
vstorage->l0_delay_trigger_count() <
mutable_cf_options.level0_file_num_compaction_trigger) {
break;
}
// check whether one extra immutable memtable or an extra L0 file would
// cause write stalling mode to be entered. It could still enter stall
// mode due to pending compaction bytes, but that's less common
write_stall_condition =
ColumnFamilyData::GetWriteStallConditionAndCause(
cfd->imm()->NumNotFlushed() + 1,
vstorage->l0_delay_trigger_count() + 1,
vstorage->estimated_compaction_needed_bytes(), mutable_cf_options)
.first;
} while (write_stall_condition != WriteStallCondition::kNormal);
}
return Status::OK();
}
// Wait for memtables to be flushed for multiple column families.
// let N = cfds.size()
// for i in [0, N),

4
db/db_impl_debug.cc
View File

@ -100,9 +100,11 @@ Status DBImpl::TEST_SwitchMemtable(ColumnFamilyData* cfd) {
return SwitchMemtable(cfd, &write_context);
}
Status DBImpl::TEST_FlushMemTable(bool wait, ColumnFamilyHandle* cfh) {
Status DBImpl::TEST_FlushMemTable(bool wait, bool allow_write_stall,
ColumnFamilyHandle* cfh) {
FlushOptions fo;
fo.wait = wait;
fo.allow_write_stall = allow_write_stall;
ColumnFamilyData* cfd;
if (cfh == nullptr) {
cfd = default_cf_handle_->cfd();

16
db/db_test.cc
View File

@ -4331,7 +4331,7 @@ TEST_F(DBTest, DynamicCompactionOptions) {
// Clean up memtable and L0. Block compaction threads. If continue to write
// and flush memtables. We should see put stop after 8 memtable flushes
// since level0_stop_writes_trigger = 8
dbfull()->TEST_FlushMemTable(true);
dbfull()->TEST_FlushMemTable(true, true);
dbfull()->CompactRange(CompactRangeOptions(), nullptr, nullptr);
// Block compaction
test::SleepingBackgroundTask sleeping_task_low;
@ -4344,7 +4344,7 @@ TEST_F(DBTest, DynamicCompactionOptions) {
WriteOptions wo;
while (count < 64) {
ASSERT_OK(Put(Key(count), RandomString(&rnd, 1024), wo));
dbfull()->TEST_FlushMemTable(true);
dbfull()->TEST_FlushMemTable(true, true);
count++;
if (dbfull()->TEST_write_controler().IsStopped()) {
sleeping_task_low.WakeUp();
@ -4372,7 +4372,7 @@ TEST_F(DBTest, DynamicCompactionOptions) {
count = 0;
while (count < 64) {
ASSERT_OK(Put(Key(count), RandomString(&rnd, 1024), wo));
dbfull()->TEST_FlushMemTable(true);
dbfull()->TEST_FlushMemTable(true, true);
count++;
if (dbfull()->TEST_write_controler().IsStopped()) {
sleeping_task_low.WakeUp();
@ -5512,7 +5512,7 @@ TEST_F(DBTest, SoftLimit) {
for (int i = 0; i < 72; i++) {
Put(Key(i), std::string(5000, 'x'));
if (i % 10 == 0) {
Flush();
dbfull()->TEST_FlushMemTable(true, true);
}
}
dbfull()->TEST_WaitForCompact();
@ -5522,7 +5522,7 @@ TEST_F(DBTest, SoftLimit) {
for (int i = 0; i < 72; i++) {
Put(Key(i), std::string(5000, 'x'));
if (i % 10 == 0) {
Flush();
dbfull()->TEST_FlushMemTable(true, true);
}
}
dbfull()->TEST_WaitForCompact();
@ -5541,7 +5541,7 @@ TEST_F(DBTest, SoftLimit) {
Put(Key(i), std::string(5000, 'x'));
Put(Key(100 - i), std::string(5000, 'x'));
// Flush the file. File size is around 30KB.
Flush();
dbfull()->TEST_FlushMemTable(true, true);
}
ASSERT_TRUE(dbfull()->TEST_write_controler().NeedsDelay());
ASSERT_TRUE(listener->CheckCondition(WriteStallCondition::kDelayed));
@ -5576,7 +5576,7 @@ TEST_F(DBTest, SoftLimit) {
Put(Key(10 + i), std::string(5000, 'x'));
Put(Key(90 - i), std::string(5000, 'x'));
// Flush the file. File size is around 30KB.
Flush();
dbfull()->TEST_FlushMemTable(true, true);
}
// Wake up sleep task to enable compaction to run and waits
@ -5597,7 +5597,7 @@ TEST_F(DBTest, SoftLimit) {
Put(Key(20 + i), std::string(5000, 'x'));
Put(Key(80 - i), std::string(5000, 'x'));
// Flush the file. File size is around 30KB.
Flush();
dbfull()->TEST_FlushMemTable(true, true);
}
// Wake up sleep task to enable compaction to run and waits
// for it to go to sleep state again to make sure one compaction

4
db/listener_test.cc
View File

@ -417,7 +417,9 @@ TEST_F(EventListenerTest, DisableBGCompaction) {
for (int i = 0; static_cast<int>(cf_meta.file_count) < kSlowdownTrigger * 10;
++i) {
Put(1, ToString(i), std::string(10000, 'x'), WriteOptions());
db_->Flush(FlushOptions(), handles_[1]);
FlushOptions fo;
fo.allow_write_stall = true;
db_->Flush(fo, handles_[1]);
db_->GetColumnFamilyMetaData(handles_[1], &cf_meta);
}
ASSERT_GE(listener->slowdown_count, kSlowdownTrigger * 9);

9
include/rocksdb/options.h
View File

@ -1183,8 +1183,13 @@ struct FlushOptions {
// If true, the flush will wait until the flush is done.
// Default: true
bool wait;
FlushOptions() : wait(true) {}
// If true, the flush would proceed immediately even it means writes will
// stall for the duration of the flush; if false the operation will wait
// until it's possible to do flush w/o causing stall or until required flush
// is performed by someone else (foreground call or background thread).
// Default: false
bool allow_write_stall;
FlushOptions() : wait(true), allow_write_stall(false) {}
};
// Create a Logger from provided DBOptions

30
utilities/transactions/transaction_test.cc
View File

@ -1719,7 +1719,7 @@ TEST_P(TransactionTest, TwoPhaseLogRollingTest) {
}
// flush only cfa memtable
s = db_impl->TEST_FlushMemTable(true, cfa);
s = db_impl->TEST_FlushMemTable(true, false, cfa);
ASSERT_OK(s);
switch (txn_db_options.write_policy) {
@ -1738,7 +1738,7 @@ TEST_P(TransactionTest, TwoPhaseLogRollingTest) {
}
// flush only cfb memtable
s = db_impl->TEST_FlushMemTable(true, cfb);
s = db_impl->TEST_FlushMemTable(true, false, cfb);
ASSERT_OK(s);
// should show not dependency on logs
@ -3788,7 +3788,7 @@ TEST_P(TransactionTest, SavepointTest3) {
s = txn1->Put("A", "");
ASSERT_OK(s);
s = txn1->PopSavePoint(); // Still no SavePoint present
ASSERT_TRUE(s.IsNotFound());
@ -3798,21 +3798,21 @@ TEST_P(TransactionTest, SavepointTest3) {
ASSERT_OK(s);
s = txn1->PopSavePoint(); // Remove 1
ASSERT_TRUE(txn1->RollbackToSavePoint().IsNotFound());
ASSERT_TRUE(txn1->RollbackToSavePoint().IsNotFound());
// Verify that "A" is still locked
// Verify that "A" is still locked
Transaction* txn2 = db->BeginTransaction(write_options, txn_options);
ASSERT_TRUE(txn2);
s = txn2->Put("A", "a2");
ASSERT_TRUE(s.IsTimedOut());
delete txn2;
txn1->SetSavePoint(); // 2
s = txn1->Put("B", "b");
ASSERT_OK(s);
txn1->SetSavePoint(); // 3
s = txn1->Put("B", "b2");
@ -3822,7 +3822,7 @@ TEST_P(TransactionTest, SavepointTest3) {
s = txn1->PopSavePoint();
ASSERT_OK(s);
s = txn1->PopSavePoint();
ASSERT_TRUE(s.IsNotFound());
@ -3836,12 +3836,12 @@ TEST_P(TransactionTest, SavepointTest3) {
s = db->Get(read_options, "A", &value);
ASSERT_OK(s);
ASSERT_EQ("a", value);
// tnx1 should have set "B" to just "b"
s = db->Get(read_options, "B", &value);
ASSERT_OK(s);
ASSERT_EQ("b", value);
s = db->Get(read_options, "C", &value);
ASSERT_TRUE(s.IsNotFound());
}
@ -5513,7 +5513,7 @@ TEST_P(TransactionTest, DuplicateKeys) {
db->FlushWAL(true);
// Flush only cf 1
reinterpret_cast<DBImpl*>(db->GetRootDB())
->TEST_FlushMemTable(true, handles[1]);
->TEST_FlushMemTable(true, false, handles[1]);
reinterpret_cast<PessimisticTransactionDB*>(db)->TEST_Crash();
ASSERT_OK(ReOpenNoDelete(cfds, &handles));
txn0 = db->GetTransactionByName("xid");
@ -5551,7 +5551,7 @@ TEST_P(TransactionTest, DuplicateKeys) {
ASSERT_OK(db->FlushWAL(true));
// Flush only cf 1
reinterpret_cast<DBImpl*>(db->GetRootDB())
->TEST_FlushMemTable(true, handles[1]);
->TEST_FlushMemTable(true, false, handles[1]);
reinterpret_cast<PessimisticTransactionDB*>(db)->TEST_Crash();
ASSERT_OK(ReOpenNoDelete(cfds, &handles));
txn0 = db->GetTransactionByName("xid");
@ -5584,7 +5584,7 @@ TEST_P(TransactionTest, DuplicateKeys) {
ASSERT_OK(db->FlushWAL(true));
// Flush only cf 1
reinterpret_cast<DBImpl*>(db->GetRootDB())
->TEST_FlushMemTable(true, handles[1]);
->TEST_FlushMemTable(true, false, handles[1]);
reinterpret_cast<PessimisticTransactionDB*>(db)->TEST_Crash();
ASSERT_OK(ReOpenNoDelete(cfds, &handles));
txn0 = db->GetTransactionByName("xid");
@ -5611,7 +5611,7 @@ TEST_P(TransactionTest, DuplicateKeys) {
ASSERT_OK(db->FlushWAL(true));
// Flush only cf 1
reinterpret_cast<DBImpl*>(db->GetRootDB())
->TEST_FlushMemTable(true, handles[1]);
->TEST_FlushMemTable(true, false, handles[1]);
reinterpret_cast<PessimisticTransactionDB*>(db)->TEST_Crash();
ASSERT_OK(ReOpenNoDelete(cfds, &handles));
txn0 = db->GetTransactionByName("xid");
@ -5638,7 +5638,7 @@ TEST_P(TransactionTest, DuplicateKeys) {
ASSERT_OK(db->FlushWAL(true));
// Flush only cf 1
reinterpret_cast<DBImpl*>(db->GetRootDB())
->TEST_FlushMemTable(true, handles[1]);
->TEST_FlushMemTable(true, false, handles[1]);
reinterpret_cast<PessimisticTransactionDB*>(db)->TEST_Crash();
ASSERT_OK(ReOpenNoDelete(cfds, &handles));
txn0 = db->GetTransactionByName("xid");