/**
* @brief read tuple record from log file and add them tuples to recovery txn
* @param recovery txn
*/
void AriesFrontendLogger::DeleteTuple(concurrency::Transaction *recovery_txn) {
TupleRecord tuple_record(LOGRECORD_TYPE_ARIES_TUPLE_DELETE);
// Check for torn log write
if (ReadTupleRecordHeader(tuple_record, log_file, log_file_size) == false) {
return;
}
auto txn_id = tuple_record.GetTransactionId();
if (recovery_txn_table.find(txn_id) == recovery_txn_table.end()) {
LOG_TRACE("Delete txd id %d not found in recovery txn table", (int)txn_id);
return;
}
auto table = GetTable(tuple_record);
ItemPointer delete_location = tuple_record.GetDeleteLocation();
// Try to delete the tuple
bool status = table->DeleteTuple(recovery_txn, delete_location);
if (status == false) {
// TODO: We need to abort on failure !
recovery_txn->SetResult(Result::RESULT_FAILURE);
return;
}
auto txn = recovery_txn_table.at(txn_id);
txn->RecordDelete(delete_location);
}
/**
* @brief read tuple record from log file and add them tuples to recovery txn
* @param recovery txn
*/
void AriesFrontendLogger::UpdateTuple(concurrency::Transaction *recovery_txn) {
TupleRecord tuple_record(LOGRECORD_TYPE_ARIES_TUPLE_UPDATE);
// Check for torn log write
if (ReadTupleRecordHeader(tuple_record, log_file, log_file_size) == false) {
return;
}
auto txn_id = tuple_record.GetTransactionId();
if (recovery_txn_table.find(txn_id) == recovery_txn_table.end()) {
LOG_TRACE("Update txd id %d not found in recovery txn table", (int)txn_id);
return;
}
auto txn = recovery_txn_table.at(txn_id);
auto table = GetTable(tuple_record);
auto tuple = ReadTupleRecordBody(table->GetSchema(), recovery_pool, log_file,
log_file_size);
// Check for torn log write
if (tuple == nullptr) {
return;
}
// First, redo the delete
ItemPointer delete_location = tuple_record.GetDeleteLocation();
bool status = table->DeleteTuple(recovery_txn, delete_location);
if (status == false) {
recovery_txn->SetResult(Result::RESULT_FAILURE);
} else {
txn->RecordDelete(delete_location);
auto target_location = tuple_record.GetInsertLocation();
auto tile_group_id = target_location.block;
auto tuple_slot = target_location.offset;
auto &manager = catalog::Manager::GetInstance();
auto tile_group = manager.GetTileGroup(tile_group_id);
// Create new tile group if table doesn't already have that tile group
if (tile_group == nullptr) {
table->AddTileGroupWithOid(tile_group_id);
tile_group = manager.GetTileGroup(tile_group_id);
if (max_oid < tile_group_id) {
max_oid = tile_group_id;
}
}
// Do the insert !
auto inserted_tuple_slot = tile_group->InsertTuple(
recovery_txn->GetTransactionId(), tuple_slot, tuple);
if (inserted_tuple_slot == INVALID_OID) {
recovery_txn->SetResult(Result::RESULT_FAILURE);
} else {
txn->RecordInsert(target_location);
}
}
delete tuple;
}
/**
* @brief Delete the table tuples using the position list in the logical tile.
*
* If truncate is on, then it will truncate the table itself.
* @return true on success, false otherwise.
*/
bool DeleteExecutor::DExecute() {
assert(target_table_);
// Retrieve next tile.
const bool success = children_[0]->Execute();
if (!success) {
return false;
}
std::unique_ptr<LogicalTile> source_tile(children_[0]->GetOutput());
storage::Tile *tile = source_tile->GetBaseTile(0);
storage::TileGroup *tile_group = tile->GetTileGroup();
auto &pos_lists = source_tile.get()->GetPositionLists();
auto tile_group_id = tile_group->GetTileGroupId();
auto transaction_ = executor_context_->GetTransaction();
LOG_INFO("Source tile : %p Tuples : %lu \n", source_tile.get(),
source_tile->GetTupleCount());
LOG_INFO("Transaction ID: %lu\n", transaction_->GetTransactionId());
// Delete each tuple
for (oid_t visible_tuple_id : *source_tile) {
oid_t physical_tuple_id = pos_lists[0][visible_tuple_id];
LOG_INFO("Visible Tuple id : %lu, Physical Tuple id : %lu \n",
visible_tuple_id, physical_tuple_id);
peloton::ItemPointer delete_location(tile_group_id, physical_tuple_id);
// Logging
{
auto &log_manager = logging::LogManager::GetInstance();
if (log_manager.IsInLoggingMode()) {
auto logger = log_manager.GetBackendLogger();
auto record = logger->GetTupleRecord(
LOGRECORD_TYPE_TUPLE_DELETE, transaction_->GetTransactionId(),
target_table_->GetOid(), INVALID_ITEMPOINTER, delete_location);
logger->Log(record);
}
}
// try to delete the tuple
// this might fail due to a concurrent operation that has latched the tuple
bool status = target_table_->DeleteTuple(transaction_, delete_location);
if (status == false) {
LOG_INFO("Fail to delete. Set txn failure");
transaction_->SetResult(peloton::Result::RESULT_FAILURE);
return false;
}
executor_context_->num_processed += 1; // deleted one
transaction_->RecordDelete(delete_location);
}
return true;
}
