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Track WAL in MANIFEST: Track deleted WALs in MANIFEST after recovering from the WALs (#7649) 

Summary:
After replaying the WALs, the memtables are flushed synchronously to L0 instead of being flushed in background. Currently, we only track WAL obsoletion events in the code path of background flush jobs. This PR tracks these events in RecoverLogFiles.

After this change, we can enable `track_and_verify_wal_in_manifest` in `db_stress`.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7649

Test Plan: `python tools/db_crashtest.py whitebox`

Reviewed By: riversand963

Differential Revision: D24824501

Pulled By: cheng-chang

fbshipit-source-id: 207129f7b845c50b333680ce6818a68a2fad54b9
This commit is contained in:
Cheng Chang 2020-11-09 08:42:41 -08:00 committed by Facebook GitHub Bot
parent 5e794b0841
commit c3911f1a72
2 changed files with 10 additions and 1 deletions
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10
db/db_impl/db_impl_open.cc
View File

@ -1143,7 +1143,7 @@ Status DBImpl::RecoverLogFiles(const std::vector<uint64_t>& wal_numbers,
if (!read_only) {
// no need to refcount since client still doesn't have access
// to the DB and can not drop column families while we iterate
auto max_wal_number = wal_numbers.back();
const WalNumber max_wal_number = wal_numbers.back();
for (auto cfd : *versions_->GetColumnFamilySet()) {
auto iter = version_edits.find(cfd->GetID());
assert(iter != version_edits.end());
@ -1210,6 +1210,14 @@ Status DBImpl::RecoverLogFiles(const std::vector<uint64_t>& wal_numbers,
assert(iter != version_edits.end());
edit_lists.push_back({&iter->second});
}
std::unique_ptr<VersionEdit> wal_deletion;
if (immutable_db_options_.track_and_verify_wals_in_manifest) {
wal_deletion.reset(new VersionEdit);
wal_deletion->DeleteWalsBefore(max_wal_number + 1);
edit_lists.back().push_back(wal_deletion.get());
}
// write MANIFEST with update
status = versions_->LogAndApply(cfds, cf_opts, edit_lists, &mutex_,
directories_.GetDbDir(),

1
db_stress_tool/db_stress_test_base.cc
View File

@ -2066,6 +2066,7 @@ void StressTest::Open() {
FLAGS_level_compaction_dynamic_level_bytes;
options_.file_checksum_gen_factory =
GetFileChecksumImpl(FLAGS_file_checksum_impl);
options_.track_and_verify_wals_in_manifest = true;
} else {
#ifdef ROCKSDB_LITE
fprintf(stderr, "--options_file not supported in lite mode\n");