englefly commented on code in PR #10397:
URL: https://github.com/apache/doris/pull/10397#discussion_r905817451
##########
be/src/olap/rowset/segment_v2/segment_iterator.cpp:
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@@ -935,13 +937,22 @@ Status SegmentIterator::next_batch(vectorized::Block*
block) {
_current_return_columns[cid]->reserve(_opts.block_row_max);
}
}
+ //count non predicate column size
Review Comment:
我们没有实际长度的统计信息，所以这里只能使用schema的定义值。将来FE下发统计的实际平均长度，可以让batch size更准。
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