yiguolei commented on code in PR #65324:
URL: https://github.com/apache/doris/pull/65324#discussion_r3577492807
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be/src/exec/operator/union_sink_operator.cpp:
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@@ -104,38 +104,35 @@ Status UnionSinkOperatorX::sink_impl(RuntimeState* state,
Block* in_block, bool
local_state._output_block =
local_state._shared_state->data_queue.get_free_block(_cur_child_id);
}
+ std::unique_ptr<Block> output_block;
if (_cur_child_id < _get_first_materialized_child_idx()) { //pass_through
if (in_block->rows() > 0) {
local_state._output_block->swap(*in_block);
- RETURN_IF_ERROR(local_state._shared_state->data_queue.push_block(
- std::move(local_state._output_block), _cur_child_id));
+ output_block = std::move(local_state._output_block);
Review Comment:
这里如果input rows == 0， 此时没有去更新output_block，那么output block 会不会是上一次的？
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