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Fix merge join clac negative memory bound

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This commit is contained in:
hezuojiao
2023-05-24 03:47:31 +00:00
committed by ob-robot
parent 6bfb591de3
commit fba2736013
1 changed files with 6 additions and 1 deletions
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7
src/sql/engine/join/ob_merge_join_op.cpp
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@ -137,7 +137,12 @@ int ObMergeJoinOp::inner_open()
MY_SPEC.equal_cond_infos_;
const int64_t left_width = left_->get_spec().width_;
const int64_t right_width = right_->get_spec().width_;
left_mem_bound_ratio_ = 1.2 * ((double)left_width) / ((double)(left_width + right_width));
const double width_ratio = ((double)left_width) / ((double)(left_width + right_width));
const double MIN_LEFT_MEM_BOUND_RATIO = 0.2;
const double MAX_LEFT_MEM_BOUND_RATIO = 0.8;
// We prefer more memory to the left, otherwise there may waste memory, so left_mem_bound_ratio_
// is multiplied by a coefficient of 1.2.
left_mem_bound_ratio_ = MAX(MIN(MAX_LEFT_MEM_BOUND_RATIO, 1.2 * width_ratio), MIN_LEFT_MEM_BOUND_RATIO);
const int64_t cache_size = MY_SPEC.max_batch_size_ * BATCH_MULTIPLE_TIMES *
(left_width + right_width);
if (OB_FAIL(sql_mem_processor_.init(&mem_context_->get_malloc_allocator(),