TsukiokaKogane commented on code in PR #66849:
URL: https://github.com/apache/doris/pull/66849#discussion_r3801764961


##########
be/src/storage/iterator/block_reader.cpp:
##########
@@ -95,6 +110,10 @@ Status BlockReader::_ensure_binlog_column_pos(const Block& 
src_block) {
 
     const uint32_t col_num = src_block.columns();
     _before_column_idx.resize(col_num);
+    std::iota(_before_column_idx.begin(), _before_column_idx.end(), 0);

Review Comment:
   为什么需要新增这一块



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