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Fix some sample logic.

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XIAO-HOU 2024-04-10 13:20:50 +00:00 committed by ob-robot
parent 664822467e
commit deb429e32e
3 changed files with 17 additions and 14 deletions
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3
src/storage/access/ob_sample_filter.cpp
View File

@ -175,6 +175,9 @@ int ObSampleFilterExecutor::build_row_id_handle(
} else if (nullptr != index_row_id_handle_) {
MEMSET(static_cast<void *>(index_row_id_handle_), 0, sizeof(ObIndexRowIdHandle) * index_handle_max_cnt);
MEMSET(static_cast<void *>(data_row_id_handle_), 0, sizeof(int64_t) * data_handle_max_cnt);
row_id_handle_cap_ = height;
index_prefetch_depth_ = index_handle_cnt;
data_prefetch_depth_ = data_handle_cnt;
} else if (OB_ISNULL(buf = allocator_->alloc(sizeof(ObIndexRowIdHandle) * index_handle_max_cnt + sizeof(int64_t) * data_handle_max_cnt))) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_WARN("Failed to alloc memory for index_row_id_handle and data_row_id_handle", K(ret), K(index_handle_max_cnt), K(data_handle_max_cnt));

2
src/storage/access/ob_sample_filter.h
View File

@ -103,7 +103,7 @@ public:
count_ = std::floor(static_cast<double>((interval_id_ + 1) * interval_length_) * percent_ / 100)
- std::floor(static_cast<double>(interval_id_ * interval_length_) * percent_ / 100);
uint64_t hash_value = murmurhash(&interval_id_, sizeof(interval_id_), static_cast<uint64_t>(seed_));
uint64_t offset = interval_length_ <= count_ ? 0 : hash_value % (interval_length_ - count_);
uint64_t offset = interval_length_ <= count_ ? 0 : hash_value % (interval_length_ - count_ + 1);
left_ = static_cast<int64_t>(interval_length_ * interval_id_ + offset) + start_;
right_ = left_ + count_ - 1;
}

26
unittest/storage/test_sample_filter.cpp
View File

@ -67,10 +67,10 @@ public:
TEST_F(ObRowSampleFilterTest, test_filter_single_row)
{
bool result[20] = {0, 0, 1, 0,
1, 1, 0, 0,
bool result[20] = {0, 1, 0, 0,
0, 0, 1, 1,
0, 0, 1, 0,
1, 1, 0, 0,
0, 1, 1, 0,
1, 1, 0, 0};
bool filtered = false;
for(int row_num = 0; row_num < 20; row_num++) {
@ -82,18 +82,18 @@ TEST_F(ObRowSampleFilterTest, test_filter_single_row)
TEST_F(ObRowSampleFilterTest, test_filter_range)
{
ObMicroIndexInfo index_info;
check_sample_range(0, 1, index_info, true);
check_sample_range(3, 3, index_info, true);
check_sample_range(6, 9, index_info, true);
check_sample_range(11, 11, index_info, true);
check_sample_range(14, 15, index_info, true);
check_sample_range(0, 0, index_info, true);
check_sample_range(2, 5, index_info, true);
check_sample_range(8, 9, index_info, true);
check_sample_range(11, 12, index_info, true);
check_sample_range(15, 15, index_info, true);
check_sample_range(18, 19, index_info, true);
check_sample_range(0, 2, index_info, false);
check_sample_range(0, 4, index_info, false);
check_sample_range(4, 4, index_info, false);
check_sample_range(5, 6, index_info, false);
check_sample_range(5, 9, index_info, false);
check_sample_range(6, 10, index_info, false);
check_sample_range(7, 9, index_info, false);
check_sample_range(12, 13, index_info, false);
check_sample_range(15, 16, index_info, false);
check_sample_range(17, 17, index_info, false);
@ -102,10 +102,10 @@ TEST_F(ObRowSampleFilterTest, test_filter_range)
TEST_F(ObRowSampleFilterTest, test_set_sample_bitmap)
{
bool result[20] = {0, 0, 1, 0,
1, 1, 0, 0,
bool result[20] = {0, 1, 0, 0,
0, 0, 1, 1,
0, 0, 1, 0,
1, 1, 0, 0,
0, 1, 1, 0,
1, 1, 0, 0};
ObBitmap *result_bitmap = nullptr;
ASSERT_EQ(OB_SUCCESS, sample_executor_->init_bitmap(20, result_bitmap));