60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#include "ob_range_skip.h"
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#include "storage/memtable/ob_memtable_iterator.h"
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#include "storage/memtable/mvcc/ob_query_engine.h"
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namespace oceanbase {
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namespace storage {
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int ObRangeSkip::inspect_gap(int idx, const bool is_memtable, uint8_t in_gap_flag, int64_t& range_idx,
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const ObStoreRowkey*& rowkey, int64_t limit)
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{
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int ret = OB_SUCCESS;
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bool in_gap = (in_gap_flag & STORE_ITER_ROW_IN_GAP);
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bool big_gap_hint = (in_gap_flag & STORE_ITER_ROW_BIG_GAP_HINT);
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int64_t gap_size = 0;
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if (!in_gap) {
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ret = OB_ENTRY_NOT_EXIST;
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} else if (!big_gap_hint) {
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ret = OB_ENTRY_NOT_EXIST;
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} else {
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ObStoreRowIterator* iter = (typeof(iter))(*iters_)[idx];
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if (OB_FAIL(iter->get_gap_end(range_idx, rowkey, gap_size))) {
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STORAGE_LOG(WARN, "RangeSkip: fail", K(ret));
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} else if (gap_size < limit) {
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STORAGE_LOG(TRACE, "RangeSkip: gap_size too small", K(is_memtable), K(*rowkey), K(gap_size), K(idx));
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ret = OB_ENTRY_NOT_EXIST;
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if (is_memtable) {
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EVENT_INC(MEMSTORE_SMALL_GAP_COUNT);
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EVENT_ADD(MEMSTORE_SMALL_GAP_ROW_COUNT, gap_size);
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} else {
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EVENT_INC(SSSTORE_SMALL_GAP_COUNT);
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EVENT_ADD(SSSTORE_SMALL_GAP_ROW_COUNT, gap_size);
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}
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} else {
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STORAGE_LOG(TRACE, "RangeSkip: skip range", K(idx), K(is_memtable), K(range_idx), K(*rowkey), K(gap_size));
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if (is_memtable) {
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EVENT_INC(MEMSTORE_BIG_GAP_COUNT);
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EVENT_ADD(MEMSTORE_BIG_GAP_ROW_COUNT, gap_size);
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} else {
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EVENT_INC(SSSTORE_BIG_GAP_COUNT);
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EVENT_ADD(SSSTORE_BIG_GAP_ROW_COUNT, gap_size);
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}
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}
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}
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return ret;
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}
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}; // end namespace storage
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}; // end namespace oceanbase
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