SWJTU-ZhangLei commented on code in PR #38243:
URL: https://github.com/apache/doris/pull/38243#discussion_r1722773609
##########
cloud/src/meta-service/meta_service_txn.cpp:
##########
@@ -913,320 +1458,420 @@ void commit_txn_immediately(
LOG(WARNING) << msg << " err=" << err << " txn_id=" << txn_id;
return;
}
- if
(!tablet_ids[tablet_id].ParseFromString(tablet_idx_values[i].value()))
[[unlikely]] {
+ if
(!(*tablet_ids)[tablet_id].ParseFromString(tablet_idx_values[i].value()))
[[unlikely]] {
code = MetaServiceCode::PROTOBUF_PARSE_ERR;
ss << "malformed tablet index value tablet_id=" << tablet_id << "
txn_id=" << txn_id;
msg = ss.str();
LOG(WARNING) << msg;
return;
}
-
table_id_tablet_ids[tablet_ids[tablet_id].table_id()].push_back(tablet_id);
+
(*table_id_tablet_ids)[(*tablet_ids)[tablet_id].table_id()].push_back(tablet_id);
VLOG_DEBUG << "tablet_id:" << tablet_id
- << " value:" << tablet_ids[tablet_id].ShortDebugString();
+ << " value:" << (*tablet_ids)[tablet_id].ShortDebugString();
}
tablet_idx_keys.clear();
tablet_idx_values.clear();
+}
- // {table/partition} -> version
- std::unordered_map<std::string, uint64_t> new_versions;
- std::vector<std::string> version_keys;
- for (auto& [_, i] : tmp_rowsets_meta) {
- int64_t tablet_id = i.tablet_id();
- int64_t table_id = tablet_ids[tablet_id].table_id();
- int64_t partition_id = i.partition_id();
- std::string ver_key = partition_version_key({instance_id, db_id,
table_id, partition_id});
- if (new_versions.count(ver_key) == 0) {
- new_versions.insert({ver_key, 0});
- version_keys.push_back(std::move(ver_key));
- }
+void make_committed_txn_visible(const std::string& instance_id, int64_t db_id,
int64_t txn_id,
+ std::shared_ptr<TxnKv> txn_kv,
MetaServiceCode& code,
+ std::string& msg) {
+ // 1. visible txn info
+ // 2. remove running key and put recycle txn key
+
+ std::stringstream ss;
+ std::unique_ptr<Transaction> txn;
+ TxnErrorCode err = txn_kv->create_txn(&txn);
+ if (err != TxnErrorCode::TXN_OK) {
+ code = cast_as<ErrCategory::CREATE>(err);
+ ss << "failed to create txn, txn_id=" << txn_id << " err=" << err;
+ msg = ss.str();
+ LOG(WARNING) << msg;
+ return;
}
- std::vector<std::optional<std::string>> version_values;
- err = txn->batch_get(&version_values, version_keys);
+
+ std::string info_val;
+ const std::string info_key = txn_info_key({instance_id, db_id, txn_id});
+ err = txn->get(info_key, &info_val);
if (err != TxnErrorCode::TXN_OK) {
- code = cast_as<ErrCategory::READ>(err);
- ss << "failed to get partition versions, err=" << err;
+ code = err == TxnErrorCode::TXN_KEY_NOT_FOUND ?
MetaServiceCode::TXN_ID_NOT_FOUND
+ :
cast_as<ErrCategory::READ>(err);
+ ss << "failed to get txn_info, db_id=" << db_id << " txn_id=" <<
txn_id << " err=" << err;
msg = ss.str();
- LOG(WARNING) << msg << " txn_id=" << txn_id;
+ LOG(WARNING) << msg;
return;
}
- size_t total_versions = version_keys.size();
- for (size_t i = 0; i < total_versions; i++) {
- int64_t version;
- if (version_values[i].has_value()) {
- VersionPB version_pb;
- if (!version_pb.ParseFromString(version_values[i].value())) {
- code = MetaServiceCode::PROTOBUF_PARSE_ERR;
- ss << "failed to parse version pb txn_id=" << txn_id
- << " key=" << hex(version_keys[i]);
- msg = ss.str();
- return;
- }
- version = version_pb.version();
- } else {
- version = 1;
+
+ TxnInfoPB txn_info;
+ if (!txn_info.ParseFromString(info_val)) {
+ code = MetaServiceCode::PROTOBUF_PARSE_ERR;
+ ss << "failed to parse txn_info, txn_id=" << txn_id;
+ msg = ss.str();
+ LOG(WARNING) << msg;
+ return;
+ }
+
+ VLOG_DEBUG << "txn_info:" << txn_info.ShortDebugString();
+ DCHECK((txn_info.status() == TxnStatusPB::TXN_STATUS_COMMITTED) ||
+ (txn_info.status() == TxnStatusPB::TXN_STATUS_VISIBLE));
+
+ if (txn_info.status() == TxnStatusPB::TXN_STATUS_COMMITTED) {
+ txn_info.set_status(TxnStatusPB::TXN_STATUS_VISIBLE);
+ txn->put(info_key, info_val);
+ LOG(INFO) << "xxx put info_key=" << hex(info_key) << " txn_id=" <<
txn_id;
+
+ const std::string running_key = txn_running_key({instance_id, db_id,
txn_id});
+ LOG(INFO) << "xxx remove running_key=" << hex(running_key) << "
txn_id=" << txn_id;
+ txn->remove(running_key);
+
+ std::string recycle_val;
+ std::string recycle_key = recycle_txn_key({instance_id, db_id,
txn_id});
+ RecycleTxnPB recycle_pb;
+ auto now_time = system_clock::now();
+ uint64_t visible_time =
duration_cast<milliseconds>(now_time.time_since_epoch()).count();
+ recycle_pb.set_creation_time(visible_time);
+ recycle_pb.set_label(txn_info.label());
+
+ if (!recycle_pb.SerializeToString(&recycle_val)) {
+ code = MetaServiceCode::PROTOBUF_SERIALIZE_ERR;
+ ss << "failed to serialize recycle_pb, txn_id=" << txn_id;
+ msg = ss.str();
+ return;
}
- new_versions[version_keys[i]] = version + 1;
+ txn->put(recycle_key, recycle_val);
}
- version_keys.clear();
- version_values.clear();
- std::vector<std::pair<std::string, std::string>> rowsets;
- std::unordered_map<int64_t, TabletStats> tablet_stats; // tablet_id ->
stats
- rowsets.reserve(tmp_rowsets_meta.size());
- for (auto& [_, i] : tmp_rowsets_meta) {
- int64_t tablet_id = i.tablet_id();
- int64_t table_id = tablet_ids[tablet_id].table_id();
- int64_t partition_id = i.partition_id();
- std::string ver_key = partition_version_key({instance_id, db_id,
table_id, partition_id});
- if (new_versions[ver_key] == 0) [[unlikely]] {
- // it is impossible.
- code = MetaServiceCode::UNDEFINED_ERR;
- ss << "failed to get partition version key, the target version not
exists in "
- "new_versions."
- << " txn_id=" << txn_id;
+ err = txn->commit();
+ if (err != TxnErrorCode::TXN_OK) {
+ code = cast_as<ErrCategory::COMMIT>(err);
+ ss << "failed to commit kv txn, txn_id=" << txn_id << " err=" << err;
+ msg = ss.str();
+ return;
+ }
+}
+
+void commit_txn_eventually(
+ const CommitTxnRequest* request, CommitTxnResponse* response,
+ std::shared_ptr<TxnKv>& txn_kv, std::shared_ptr<TxnLazyCommitter>&
txn_lazy_committer,
+ MetaServiceCode& code, std::string& msg, const std::string&
instance_id, int64_t db_id,
+ std::vector<std::pair<std::string, doris::RowsetMetaCloudPB>>&
tmp_rowsets_meta) {
+ std::stringstream ss;
+ TxnErrorCode err = TxnErrorCode::TXN_OK;
+ int64_t txn_id = request->txn_id();
+ bool need_advance_last_txn = false;
+ int64_t last_pending_txn_id = 0;
+
+ do {
+ std::unique_ptr<Transaction> txn;
+ err = txn_kv->create_txn(&txn);
+ if (err != TxnErrorCode::TXN_OK) {
+ code = cast_as<ErrCategory::CREATE>(err);
+ ss << "filed to create txn, txn_id=" << txn_id << " err=" << err;
msg = ss.str();
- LOG(ERROR) << msg;
+ LOG(WARNING) << msg;
return;
}
- // Update rowset version
- int64_t new_version = new_versions[ver_key];
- i.set_start_version(new_version);
- i.set_end_version(new_version);
+ // tablet_id -> {table/index/partition}_id
+ std::unordered_map<int64_t, TabletIndexPB> tablet_ids;
+ // table_id -> tablets_ids
+ std::unordered_map<int64_t, std::vector<int64_t>> table_id_tablet_ids;
+ get_tablet_indexes(instance_id, txn_id, tmp_rowsets_meta, txn, code,
msg, &tablet_ids,
+ &table_id_tablet_ids);
+ if (code != MetaServiceCode::OK) {
+ LOG(WARNING) << "get_tablet_indexes failed, txn_id=" << txn_id <<
" code=" << code;
+ return;
+ }
- std::string key = meta_rowset_key({instance_id, tablet_id,
i.end_version()});
- std::string val;
- if (!i.SerializeToString(&val)) {
- code = MetaServiceCode::PROTOBUF_SERIALIZE_ERR;
- ss << "failed to serialize rowset_meta, txn_id=" << txn_id;
+ std::unordered_map<std::string, uint64_t> new_versions;
+ std::vector<std::string> version_keys;
+ for (auto& [_, i] : tmp_rowsets_meta) {
+ int64_t tablet_id = i.tablet_id();
+ int64_t table_id = tablet_ids[tablet_id].table_id();
+ int64_t partition_id = i.partition_id();
+ std::string ver_key =
+ partition_version_key({instance_id, db_id, table_id,
partition_id});
+ if (new_versions.count(ver_key) == 0) {
+ new_versions.insert({ver_key, 0});
+ version_keys.push_back(std::move(ver_key));
+ }
+ }
+
+ std::vector<std::optional<std::string>> version_values;
+ err = txn->batch_get(&version_values, version_keys);
+ if (err != TxnErrorCode::TXN_OK) {
+ code = cast_as<ErrCategory::READ>(err);
+ ss << "failed to get partition versions, err=" << err;
msg = ss.str();
+ LOG(WARNING) << msg << " txn_id=" << txn_id;
return;
}
- rowsets.emplace_back(std::move(key), std::move(val));
- // Accumulate affected rows
- auto& stats = tablet_stats[tablet_id];
- stats.data_size += i.data_disk_size();
- stats.num_rows += i.num_rows();
- ++stats.num_rowsets;
- stats.num_segs += i.num_segments();
- } // for tmp_rowsets_meta
+ for (size_t i = 0; i < version_keys.size(); i++) {
+ int64_t version;
+ if (version_values[i].has_value()) {
+ VersionPB version_pb;
+ if (!version_pb.ParseFromString(version_values[i].value())) {
+ code = MetaServiceCode::PROTOBUF_PARSE_ERR;
+ ss << "failed to parse version pb txn_id=" << txn_id
+ << " key=" << hex(version_keys[i]);
+ msg = ss.str();
+ return;
+ }
+ if (version_pb.has_txn_id()) {
+ need_advance_last_txn = true;
+ last_pending_txn_id = version_pb.txn_id();
+ break;
+ }
+ version = version_pb.version();
+ } else {
+ version = 1;
+ }
+ new_versions[version_keys[i]] = version + 1;
+ need_advance_last_txn = false;
+ last_pending_txn_id = 0;
+ }
+
+ if (need_advance_last_txn) {
+ txn.reset();
+ DCHECK(last_pending_txn_id > 0);
+ std::shared_ptr<TxnLazyCommitTask> task =
+ txn_lazy_committer->submit(instance_id,
last_pending_txn_id);
+
+ std::pair<MetaServiceCode, std::string> ret = task->wait();
+ need_advance_last_txn = false;
+ last_pending_txn_id = 0;
+ code = ret.first;
+ msg = ret.second;
+ if (code != MetaServiceCode::OK) {
+ LOG(WARNING) << "advance_last_txn failed last_txn=" <<
last_pending_txn_id
+ << " code=" << code << "msg=" << msg;
+ return;
+ }
+ continue;
Review Comment:
> Add some comments to explain why we need to retry.
done, i have added a comment
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