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Add rate_limiter to GenerateOneFileChecksum (#7811) 

Summary:
In GenerateOneFileChecksum(), RocksDB reads the file and computes its checksum. A rate limiter can be passed to the constructor of RandomAccessFileReader so that read I/O can be rate limited.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7811

Test Plan: make check

Reviewed By: cheng-chang

Differential Revision: D25699896

Pulled By: zhichao-cao

fbshipit-source-id: e2688bc1126c543979a3bcf91dda784bd7b74164
This commit is contained in:
Zhichao Cao 2020-12-26 22:05:42 -08:00 committed by Facebook GitHub Bot
parent 601585bca4
commit 44ebc24dca
4 changed files with 8 additions and 6 deletions
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2
db/db_impl/db_impl.cc
View File

@ -4872,7 +4872,7 @@ Status DBImpl::VerifySstFileChecksum(const FileMetaData& fmeta,
fs_.get(), fname, immutable_db_options_.file_checksum_gen_factory.get(),
fmeta.file_checksum_func_name, &file_checksum, &func_name,
read_options.readahead_size, immutable_db_options_.allow_mmap_reads,
io_tracer_);
io_tracer_, immutable_db_options_.rate_limiter.get());
if (s.ok()) {
assert(fmeta.file_checksum_func_name == func_name);
if (file_checksum != fmeta.file_checksum) {

5
db/external_sst_file_ingestion_job.cc
View File

@ -201,7 +201,8 @@ Status ExternalSstFileIngestionJob::Prepare(
requested_checksum_func_name, &generated_checksum,
&generated_checksum_func_name,
ingestion_options_.verify_checksums_readahead_size,
db_options_.allow_mmap_reads, io_tracer_);
db_options_.allow_mmap_reads, io_tracer_,
db_options_.rate_limiter.get());
if (!io_s.ok()) {
status = io_s;
ROCKS_LOG_WARN(db_options_.info_log,
@ -856,7 +857,7 @@ IOStatus ExternalSstFileIngestionJob::GenerateChecksumForIngestedFile(
db_options_.file_checksum_gen_factory.get(), requested_checksum_func_name,
&file_checksum, &file_checksum_func_name,
ingestion_options_.verify_checksums_readahead_size,
db_options_.allow_mmap_reads, io_tracer_);
db_options_.allow_mmap_reads, io_tracer_, db_options_.rate_limiter.get());
if (!io_s.ok()) {
return io_s;
}

5
file/file_util.cc
View File

@ -132,7 +132,7 @@ IOStatus GenerateOneFileChecksum(
const std::string& requested_checksum_func_name, std::string* file_checksum,
std::string* file_checksum_func_name,
size_t verify_checksums_readahead_size, bool allow_mmap_reads,
std::shared_ptr<IOTracer>& io_tracer) {
std::shared_ptr<IOTracer>& io_tracer, RateLimiter* rate_limiter) {
if (checksum_factory == nullptr) {
return IOStatus::InvalidArgument("Checksum factory is invalid");
}
@ -173,7 +173,8 @@ IOStatus GenerateOneFileChecksum(
return io_s;
}
reader.reset(new RandomAccessFileReader(std::move(r_file), file_path,
nullptr /*Env*/, io_tracer));
nullptr /*Env*/, io_tracer, nullptr,
0, nullptr, rate_limiter));
}
// Found that 256 KB readahead size provides the best performance, based on

2
file/file_util.h
View File

@ -39,7 +39,7 @@ extern IOStatus GenerateOneFileChecksum(
const std::string& requested_checksum_func_name, std::string* file_checksum,
std::string* file_checksum_func_name,
size_t verify_checksums_readahead_size, bool allow_mmap_reads,
std::shared_ptr<IOTracer>& io_tracer);
std::shared_ptr<IOTracer>& io_tracer, RateLimiter* rate_limiter = nullptr);
inline IOStatus PrepareIOFromReadOptions(const ReadOptions& ro, Env* env,
IOOptions& opts) {