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db_stress: Some code style improvements (#6137) 

Summary:
Two changes:
1. Prevent static variables in a header file
2. Add "override" keyword when virtual functions are overridden.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6137

Test Plan: Build db_stress with or without LITE.

Differential Revision: D18892007

fbshipit-source-id: 295356427a34473b23ed36d6ed4ef3ae35a32db0
This commit is contained in:
sdong 2019-12-09 14:36:10 -08:00 committed by Facebook Github Bot
parent e43d2c4424
commit a960287dee
5 changed files with 98 additions and 99 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
db_stress_tool/batched_ops_stress.cc
View File

@ -19,12 +19,11 @@ class BatchedOpsStressTest : public StressTest {
// Given a key K and value V, this puts ("0"+K, "0"+V), ("1"+K, "1"+V), ... // Given a key K and value V, this puts ("0"+K, "0"+V), ("1"+K, "1"+V), ...
// ("9"+K, "9"+V) in DB atomically i.e in a single batch. // ("9"+K, "9"+V) in DB atomically i.e in a single batch.
// Also refer BatchedOpsStressTest::TestGet // Also refer BatchedOpsStressTest::TestGet
virtual Status TestPut(ThreadState* thread, WriteOptions& write_opts, Status TestPut(ThreadState* thread, WriteOptions& write_opts,
const ReadOptions& /* read_opts */, const ReadOptions& /* read_opts */,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys, char (&value)[100],
char (&value)[100], std::unique_ptr<MutexLock>& /* lock */) override {
std::unique_ptr<MutexLock>& /* lock */) {
uint32_t value_base = uint32_t value_base =
thread->rand.Next() % thread->shared->UNKNOWN_SENTINEL; thread->rand.Next() % thread->shared->UNKNOWN_SENTINEL;
size_t sz = GenerateValue(value_base, value, sizeof(value)); size_t sz = GenerateValue(value_base, value, sizeof(value));
@ -61,10 +60,10 @@ class BatchedOpsStressTest : public StressTest {
// Given a key K, this deletes ("0"+K), ("1"+K),... ("9"+K) // Given a key K, this deletes ("0"+K), ("1"+K),... ("9"+K)
// in DB atomically i.e in a single batch. Also refer MultiGet. // in DB atomically i.e in a single batch. Also refer MultiGet.
virtual Status TestDelete(ThreadState* thread, WriteOptions& writeoptions, Status TestDelete(ThreadState* thread, WriteOptions& writeoptions,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& /* lock */) { std::unique_ptr<MutexLock>& /* lock */) override {
std::string keys[10] = {"9", "7", "5", "3", "1", "8", "6", "4", "2", "0"}; std::string keys[10] = {"9", "7", "5", "3", "1", "8", "6", "4", "2", "0"};
WriteBatch batch; WriteBatch batch;
@ -87,22 +86,22 @@ class BatchedOpsStressTest : public StressTest {
return s; return s;
} }
virtual Status TestDeleteRange( Status TestDeleteRange(ThreadState* /* thread */,
ThreadState* /* thread */, WriteOptions& /* write_opts */, WriteOptions& /* write_opts */,
const std::vector<int>& /* rand_column_families */, const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */, const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) { std::unique_ptr<MutexLock>& /* lock */) override {
assert(false); assert(false);
return Status::NotSupported( return Status::NotSupported(
"BatchedOpsStressTest does not support " "BatchedOpsStressTest does not support "
"TestDeleteRange"); "TestDeleteRange");
} }
virtual void TestIngestExternalFile( void TestIngestExternalFile(
ThreadState* /* thread */, ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */, const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */, const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) { std::unique_ptr<MutexLock>& /* lock */) override {
assert(false); assert(false);
fprintf(stderr, fprintf(stderr,
"BatchedOpsStressTest does not support " "BatchedOpsStressTest does not support "
@ -115,9 +114,9 @@ class BatchedOpsStressTest : public StressTest {
// "0"+V, "1"+V,..."9"+V. // "0"+V, "1"+V,..."9"+V.
// ASSUMES that BatchedOpsStressTest::TestPut was used to put (K, V) into // ASSUMES that BatchedOpsStressTest::TestPut was used to put (K, V) into
// the DB. // the DB.
virtual Status TestGet(ThreadState* thread, const ReadOptions& readoptions, Status TestGet(ThreadState* thread, const ReadOptions& readoptions,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
std::string keys[10] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"}; std::string keys[10] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
Slice key_slices[10]; Slice key_slices[10];
std::string values[10]; std::string values[10];
@ -170,10 +169,10 @@ class BatchedOpsStressTest : public StressTest {
return s; return s;
} }
virtual std::vector<Status> TestMultiGet( std::vector<Status> TestMultiGet(
ThreadState* thread, const ReadOptions& readoptions, ThreadState* thread, const ReadOptions& readoptions,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
size_t num_keys = rand_keys.size(); size_t num_keys = rand_keys.size();
std::vector<Status> ret_status(num_keys); std::vector<Status> ret_status(num_keys);
std::array<std::string, 10> keys = {"0", "1", "2", "3", "4", std::array<std::string, 10> keys = {"0", "1", "2", "3", "4",
@ -246,10 +245,9 @@ class BatchedOpsStressTest : public StressTest {
// each series should be the same length, and it is verified for each // each series should be the same length, and it is verified for each
// index i that all the i'th values are of the form "0"+V, "1"+V,..."9"+V. // index i that all the i'th values are of the form "0"+V, "1"+V,..."9"+V.
// ASSUMES that MultiPut was used to put (K, V) // ASSUMES that MultiPut was used to put (K, V)
virtual Status TestPrefixScan(ThreadState* thread, Status TestPrefixScan(ThreadState* thread, const ReadOptions& readoptions,
const ReadOptions& readoptions,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
size_t prefix_to_use = size_t prefix_to_use =
(FLAGS_prefix_size < 0) ? 7 : static_cast<size_t>(FLAGS_prefix_size); (FLAGS_prefix_size < 0) ? 7 : static_cast<size_t>(FLAGS_prefix_size);
std::string key_str = Key(rand_keys[0]); std::string key_str = Key(rand_keys[0]);
@ -333,7 +331,7 @@ class BatchedOpsStressTest : public StressTest {
return s; return s;
} }
virtual void VerifyDb(ThreadState* /* thread */) const {} void VerifyDb(ThreadState* /* thread */) const override {}
}; };
StressTest* CreateBatchedOpsStressTest() { return new BatchedOpsStressTest(); } StressTest* CreateBatchedOpsStressTest() { return new BatchedOpsStressTest(); }

54
db_stress_tool/cf_consistency_stress.cc
View File

@ -17,12 +17,11 @@ class CfConsistencyStressTest : public StressTest {
virtual ~CfConsistencyStressTest() {} virtual ~CfConsistencyStressTest() {}
virtual Status TestPut(ThreadState* thread, WriteOptions& write_opts, Status TestPut(ThreadState* thread, WriteOptions& write_opts,
const ReadOptions& /* read_opts */, const ReadOptions& /* read_opts */,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys, char (&value)[100],
char (&value)[100], std::unique_ptr<MutexLock>& /* lock */) override {
std::unique_ptr<MutexLock>& /* lock */) {
std::string key_str = Key(rand_keys[0]); std::string key_str = Key(rand_keys[0]);
Slice key = key_str; Slice key = key_str;
uint64_t value_base = batch_id_.fetch_add(1); uint64_t value_base = batch_id_.fetch_add(1);
@ -50,10 +49,10 @@ class CfConsistencyStressTest : public StressTest {
return s; return s;
} }
virtual Status TestDelete(ThreadState* thread, WriteOptions& write_opts, Status TestDelete(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& /* lock */) { std::unique_ptr<MutexLock>& /* lock */) override {
std::string key_str = Key(rand_keys[0]); std::string key_str = Key(rand_keys[0]);
Slice key = key_str; Slice key = key_str;
WriteBatch batch; WriteBatch batch;
@ -71,10 +70,10 @@ class CfConsistencyStressTest : public StressTest {
return s; return s;
} }
virtual Status TestDeleteRange(ThreadState* thread, WriteOptions& write_opts, Status TestDeleteRange(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& /* lock */) { std::unique_ptr<MutexLock>& /* lock */) override {
int64_t rand_key = rand_keys[0]; int64_t rand_key = rand_keys[0];
auto shared = thread->shared; auto shared = thread->shared;
int64_t max_key = shared->GetMaxKey(); int64_t max_key = shared->GetMaxKey();
@ -102,11 +101,11 @@ class CfConsistencyStressTest : public StressTest {
return s; return s;
} }
virtual void TestIngestExternalFile( void TestIngestExternalFile(
ThreadState* /* thread */, ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */, const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */, const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) { std::unique_ptr<MutexLock>& /* lock */) override {
assert(false); assert(false);
fprintf(stderr, fprintf(stderr,
"CfConsistencyStressTest does not support TestIngestExternalFile " "CfConsistencyStressTest does not support TestIngestExternalFile "
@ -114,9 +113,9 @@ class CfConsistencyStressTest : public StressTest {
std::terminate(); std::terminate();
} }
virtual Status TestGet(ThreadState* thread, const ReadOptions& readoptions, Status TestGet(ThreadState* thread, const ReadOptions& readoptions,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
std::string key_str = Key(rand_keys[0]); std::string key_str = Key(rand_keys[0]);
Slice key = key_str; Slice key = key_str;
Status s; Status s;
@ -198,10 +197,10 @@ class CfConsistencyStressTest : public StressTest {
return s; return s;
} }
virtual std::vector<Status> TestMultiGet( std::vector<Status> TestMultiGet(
ThreadState* thread, const ReadOptions& read_opts, ThreadState* thread, const ReadOptions& read_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
size_t num_keys = rand_keys.size(); size_t num_keys = rand_keys.size();
std::vector<std::string> key_str; std::vector<std::string> key_str;
std::vector<Slice> keys; std::vector<Slice> keys;
@ -232,10 +231,9 @@ class CfConsistencyStressTest : public StressTest {
return statuses; return statuses;
} }
virtual Status TestPrefixScan(ThreadState* thread, Status TestPrefixScan(ThreadState* thread, const ReadOptions& readoptions,
const ReadOptions& readoptions,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
size_t prefix_to_use = size_t prefix_to_use =
(FLAGS_prefix_size < 0) ? 7 : static_cast<size_t>(FLAGS_prefix_size); (FLAGS_prefix_size < 0) ? 7 : static_cast<size_t>(FLAGS_prefix_size);
@ -271,18 +269,17 @@ class CfConsistencyStressTest : public StressTest {
return s; return s;
} }
virtual ColumnFamilyHandle* GetControlCfh(ThreadState* thread, ColumnFamilyHandle* GetControlCfh(ThreadState* thread,
int /*column_family_id*/ int /*column_family_id*/
) { ) override {
// All column families should contain the same data. Randomly pick one. // All column families should contain the same data. Randomly pick one.
return column_families_[thread->rand.Next() % column_families_.size()]; return column_families_[thread->rand.Next() % column_families_.size()];
} }
#ifdef ROCKSDB_LITE #ifdef ROCKSDB_LITE
virtual Status TestCheckpoint( Status TestCheckpoint(ThreadState* /* thread */,
ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */, const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */) { const std::vector<int64_t>& /* rand_keys */) override {
assert(false); assert(false);
fprintf(stderr, fprintf(stderr,
"RocksDB lite does not support " "RocksDB lite does not support "
@ -290,9 +287,9 @@ class CfConsistencyStressTest : public StressTest {
std::terminate(); std::terminate();
} }
#else #else
virtual Status TestCheckpoint( Status TestCheckpoint(ThreadState* thread,
ThreadState* thread, const std::vector<int>& /* rand_column_families */, const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */) { const std::vector<int64_t>& /* rand_keys */) override {
std::string checkpoint_dir = std::string checkpoint_dir =
FLAGS_db + "/.checkpoint" + ToString(thread->tid); FLAGS_db + "/.checkpoint" + ToString(thread->tid);
DestroyDB(checkpoint_dir, options_); DestroyDB(checkpoint_dir, options_);
@ -338,7 +335,7 @@ class CfConsistencyStressTest : public StressTest {
} }
#endif // !ROCKSDB_LITE #endif // !ROCKSDB_LITE
virtual void VerifyDb(ThreadState* thread) const { void VerifyDb(ThreadState* thread) const override {
ReadOptions options(FLAGS_verify_checksum, true); ReadOptions options(FLAGS_verify_checksum, true);
// We must set total_order_seek to true because we are doing a SeekToFirst // We must set total_order_seek to true because we are doing a SeekToFirst
// on a column family whose memtables may support (by default) prefix-based // on a column family whose memtables may support (by default) prefix-based
@ -489,8 +486,9 @@ class CfConsistencyStressTest : public StressTest {
} while (true); } while (true);
} }
virtual std::vector<int> GenerateColumnFamilies( std::vector<int> GenerateColumnFamilies(
const int /* num_column_families */, int /* rand_column_family */) const { const int /* num_column_families */,
int /* rand_column_family */) const override {
std::vector<int> ret; std::vector<int> ret;
int num = static_cast<int>(column_families_.size()); int num = static_cast<int>(column_families_.size());
int k = 0; int k = 0;

7
db_stress_tool/db_stress_common.h
View File

@ -197,11 +197,10 @@ DECLARE_int32(prefix_size);
DECLARE_bool(use_merge); DECLARE_bool(use_merge);
DECLARE_bool(use_full_merge_v1); DECLARE_bool(use_full_merge_v1);
static const long KB = 1024; const long KB = 1024;
static const int kRandomValueMaxFactor = 3; const int kRandomValueMaxFactor = 3;
static const int kValueMaxLen = 100; const int kValueMaxLen = 100;
static std::shared_ptr<rocksdb::Env> env_guard;
// posix or hdfs environment // posix or hdfs environment
extern rocksdb::Env* FLAGS_env; extern rocksdb::Env* FLAGS_env;

4
db_stress_tool/db_stress_tool.cc
View File

@ -25,6 +25,10 @@
#include "db_stress_tool/db_stress_driver.h" #include "db_stress_tool/db_stress_driver.h"
namespace rocksdb { namespace rocksdb {
namespace {
static std::shared_ptr<rocksdb::Env> env_guard;
} // namespace
int db_stress_tool(int argc, char** argv) { int db_stress_tool(int argc, char** argv) {
SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) + SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
" [OPTIONS]..."); " [OPTIONS]...");

44
db_stress_tool/no_batched_ops_stress.cc
View File

@ -17,7 +17,7 @@ class NonBatchedOpsStressTest : public StressTest {
virtual ~NonBatchedOpsStressTest() {} virtual ~NonBatchedOpsStressTest() {}
virtual void VerifyDb(ThreadState* thread) const { void VerifyDb(ThreadState* thread) const override {
ReadOptions options(FLAGS_verify_checksum, true); ReadOptions options(FLAGS_verify_checksum, true);
auto shared = thread->shared; auto shared = thread->shared;
const int64_t max_key = shared->GetMaxKey(); const int64_t max_key = shared->GetMaxKey();
@ -95,7 +95,7 @@ class NonBatchedOpsStressTest : public StressTest {
} }
} }
virtual void MaybeClearOneColumnFamily(ThreadState* thread) { void MaybeClearOneColumnFamily(ThreadState* thread) override {
if (FLAGS_clear_column_family_one_in != 0 && FLAGS_column_families > 1) { if (FLAGS_clear_column_family_one_in != 0 && FLAGS_column_families > 1) {
if (thread->rand.OneIn(FLAGS_clear_column_family_one_in)) { if (thread->rand.OneIn(FLAGS_clear_column_family_one_in)) {
// drop column family and then create it again (can't drop default) // drop column family and then create it again (can't drop default)
@ -130,11 +130,11 @@ class NonBatchedOpsStressTest : public StressTest {
} }
} }
virtual bool ShouldAcquireMutexOnKey() const { return true; } bool ShouldAcquireMutexOnKey() const override { return true; }
virtual Status TestGet(ThreadState* thread, const ReadOptions& read_opts, Status TestGet(ThreadState* thread, const ReadOptions& read_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
auto cfh = column_families_[rand_column_families[0]]; auto cfh = column_families_[rand_column_families[0]];
std::string key_str = Key(rand_keys[0]); std::string key_str = Key(rand_keys[0]);
Slice key = key_str; Slice key = key_str;
@ -153,10 +153,10 @@ class NonBatchedOpsStressTest : public StressTest {
return s; return s;
} }
virtual std::vector<Status> TestMultiGet( std::vector<Status> TestMultiGet(
ThreadState* thread, const ReadOptions& read_opts, ThreadState* thread, const ReadOptions& read_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
size_t num_keys = rand_keys.size(); size_t num_keys = rand_keys.size();
std::vector<std::string> key_str; std::vector<std::string> key_str;
std::vector<Slice> keys; std::vector<Slice> keys;
@ -187,10 +187,9 @@ class NonBatchedOpsStressTest : public StressTest {
return statuses; return statuses;
} }
virtual Status TestPrefixScan(ThreadState* thread, Status TestPrefixScan(ThreadState* thread, const ReadOptions& read_opts,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) { const std::vector<int64_t>& rand_keys) override {
auto cfh = column_families_[rand_column_families[0]]; auto cfh = column_families_[rand_column_families[0]];
std::string key_str = Key(rand_keys[0]); std::string key_str = Key(rand_keys[0]);
Slice key = key_str; Slice key = key_str;
@ -222,11 +221,11 @@ class NonBatchedOpsStressTest : public StressTest {
return s; return s;
} }
virtual Status TestPut(ThreadState* thread, WriteOptions& write_opts, Status TestPut(ThreadState* thread, WriteOptions& write_opts,
const ReadOptions& read_opts, const ReadOptions& read_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys, char (&value)[100],
char (&value)[100], std::unique_ptr<MutexLock>& lock) { std::unique_ptr<MutexLock>& lock) override {
auto shared = thread->shared; auto shared = thread->shared;
int64_t max_key = shared->GetMaxKey(); int64_t max_key = shared->GetMaxKey();
int64_t rand_key = rand_keys[0]; int64_t rand_key = rand_keys[0];
@ -301,10 +300,10 @@ class NonBatchedOpsStressTest : public StressTest {
return s; return s;
} }
virtual Status TestDelete(ThreadState* thread, WriteOptions& write_opts, Status TestDelete(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) { std::unique_ptr<MutexLock>& lock) override {
int64_t rand_key = rand_keys[0]; int64_t rand_key = rand_keys[0];
int rand_column_family = rand_column_families[0]; int rand_column_family = rand_column_families[0];
auto shared = thread->shared; auto shared = thread->shared;
@ -377,10 +376,10 @@ class NonBatchedOpsStressTest : public StressTest {
return s; return s;
} }
virtual Status TestDeleteRange(ThreadState* thread, WriteOptions& write_opts, Status TestDeleteRange(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) { std::unique_ptr<MutexLock>& lock) override {
// OPERATION delete range // OPERATION delete range
std::vector<std::unique_ptr<MutexLock>> range_locks; std::vector<std::unique_ptr<MutexLock>> range_locks;
// delete range does not respect disallowed overwrites. the keys for // delete range does not respect disallowed overwrites. the keys for
@ -429,11 +428,11 @@ class NonBatchedOpsStressTest : public StressTest {
} }
#ifdef ROCKSDB_LITE #ifdef ROCKSDB_LITE
virtual void TestIngestExternalFile( void TestIngestExternalFile(
ThreadState* /* thread */, ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */, const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */, const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) { std::unique_ptr<MutexLock>& /* lock */) override {
assert(false); assert(false);
fprintf(stderr, fprintf(stderr,
"RocksDB lite does not support " "RocksDB lite does not support "
@ -441,9 +440,10 @@ class NonBatchedOpsStressTest : public StressTest {
std::terminate(); std::terminate();
} }
#else #else
virtual void TestIngestExternalFile( void TestIngestExternalFile(ThreadState* thread,
ThreadState* thread, const std::vector<int>& rand_column_families, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, std::unique_ptr<MutexLock>& lock) { const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) override {
const std::string sst_filename = const std::string sst_filename =
FLAGS_db + "/." + ToString(thread->tid) + ".sst"; FLAGS_db + "/." + ToString(thread->tid) + ".sst";
Status s; Status s;