yangzhg commented on a change in pull request #2858: fix core when using
grouping sets in large data
URL: https://github.com/apache/incubator-doris/pull/2858#discussion_r376394391
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File path: be/src/exec/repeat_node.cpp
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@@ -100,10 +93,18 @@ Status RepeatNode::get_repeated_batch(
continue;
}
- char* new_tuple = reinterpret_cast<char*>(dst_tuples[j]);
- new_tuple += (*dst_it)->byte_size();
- dst_tuples[j] = reinterpret_cast<Tuple*>(new_tuple);
-
+ if (dst_tuples[j] == nullptr) {
+ int size = row_batch->capacity() * (*dst_it)->byte_size();
Review comment:
the memory of dst_tuples[j] is all the memory of jth tuple in the row batch
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