0d48a3961c
NOTE: This patch would modify all Backend's data. And this will cause a very long time to restart be. So if you want to interferer your product environment, you should upgrade backend one by one. 1. Refactoring be is to clarify the structure the codes. 2. Use unique id to indicate a rowset. Nameing rowset with tablet_id and version will lead to many conflicts among compaction, clone, restore. 3. Extract an rowset interface to encapsulate rowsets with different format.
134 lines
4.7 KiB
C++
134 lines
4.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "olap/task/engine_checksum_task.h"
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#include "olap/reader.h"
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namespace doris {
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EngineChecksumTask::EngineChecksumTask(TTabletId tablet_id, TSchemaHash schema_hash,
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TVersion version, TVersionHash version_hash, uint32_t* checksum)
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:_tablet_id(tablet_id),
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_schema_hash(schema_hash),
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_version(version),
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_version_hash(version_hash),
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_checksum(checksum) {
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}
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OLAPStatus EngineChecksumTask::execute() {
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OLAPStatus res = _compute_checksum();
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return res;
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} // execute
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OLAPStatus EngineChecksumTask::_compute_checksum() {
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LOG(INFO) << "begin to process compute checksum."
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<< "tablet_id=" << _tablet_id
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<< ", schema_hash=" << _schema_hash
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<< ", version=" << _version;
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OLAPStatus res = OLAP_SUCCESS;
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if (_checksum == NULL) {
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OLAP_LOG_WARNING("invalid output parameter which is null pointer.");
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return OLAP_ERR_CE_CMD_PARAMS_ERROR;
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}
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TabletSharedPtr tablet = StorageEngine::instance()->tablet_manager()->get_tablet(_tablet_id, _schema_hash);
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if (NULL == tablet.get()) {
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OLAP_LOG_WARNING("can't find tablet. [tablet_id=%ld schema_hash=%d]",
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_tablet_id, _schema_hash);
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return OLAP_ERR_TABLE_NOT_FOUND;
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}
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Reader reader;
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ReaderParams reader_params;
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reader_params.tablet = tablet;
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reader_params.reader_type = READER_CHECKSUM;
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reader_params.version = Version(0, _version);
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{
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ReadLock rdlock(tablet->get_header_lock_ptr());
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const RowsetSharedPtr message = tablet->rowset_with_max_version();
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if (message == NULL) {
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LOG(FATAL) << "fail to get latest version. tablet_id=" << _tablet_id;
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return OLAP_ERR_VERSION_NOT_EXIST;
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}
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if (message->end_version() == _version
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&& message->version_hash() != _version_hash) {
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OLAP_LOG_WARNING("fail to check latest version hash. "
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"[res=%d tablet_id=%ld version_hash=%ld request_version_hash=%ld]",
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res, _tablet_id, message->version_hash(), _version_hash);
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return OLAP_ERR_CE_CMD_PARAMS_ERROR;
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}
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OLAPStatus acquire_reader_st = tablet->capture_rs_readers(reader_params.version, &reader_params.rs_readers);
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if (acquire_reader_st != OLAP_SUCCESS) {
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LOG(WARNING) << "fail to init reader. tablet=" << tablet->full_name()
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<< "res=" << acquire_reader_st;
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return acquire_reader_st;
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}
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}
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// ignore float and double type considering to precision lose
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for (size_t i = 0; i < tablet->tablet_schema().num_columns(); ++i) {
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FieldType type = tablet->tablet_schema().column(i).type();
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if (type == OLAP_FIELD_TYPE_FLOAT || type == OLAP_FIELD_TYPE_DOUBLE) {
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continue;
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}
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reader_params.return_columns.push_back(i);
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}
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res = reader.init(reader_params);
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if (res != OLAP_SUCCESS) {
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OLAP_LOG_WARNING("initiate reader fail. [res=%d]", res);
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return res;
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}
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RowCursor row;
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res = row.init(tablet->tablet_schema(), reader_params.return_columns);
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if (res != OLAP_SUCCESS) {
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OLAP_LOG_WARNING("failed to init row cursor. [res=%d]", res);
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return res;
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}
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row.allocate_memory_for_string_type(tablet->tablet_schema());
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bool eof = false;
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uint32_t row_checksum = 0;
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while (true) {
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OLAPStatus res = reader.next_row_with_aggregation(&row, &eof);
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if (res == OLAP_SUCCESS && eof) {
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VLOG(3) << "reader reads to the end.";
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break;
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} else if (res != OLAP_SUCCESS) {
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OLAP_LOG_WARNING("fail to read in reader. [res=%d]", res);
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return res;
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}
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row_checksum = row.hash_code(row_checksum);
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}
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LOG(INFO) << "success to finish compute checksum. checksum=" << row_checksum;
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*_checksum = row_checksum;
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return OLAP_SUCCESS;
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}
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} // doris
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