[Fix](topn opt) prevent from merge __TEMP__ column in segment iterator (

apache#29127)
LemonLiTree · Dec 27, 2023 · d2bf26e · d2bf26e
1 parent dd92160
commit d2bf26e
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/be/src/vec/olap/vcollect_iterator.cpp b/be/src/vec/olap/vcollect_iterator.cpp
@@ -256,11 +256,14 @@ Status VCollectIterator::_topn_next(Block* block) {
 
     auto clone_block = block->clone_empty();
     MutableBlock mutable_block = vectorized::MutableBlock::build_mutable_block(&clone_block);
-    // clear TMPE columns to avoid column align problem in mutable_block.add_rows bellow
+    // clear TEMP columns to avoid column align problem in mutable_block.add_rows bellow
     auto all_column_names = mutable_block.get_names();
     for (auto& name : all_column_names) {
         if (name.rfind(BeConsts::BLOCK_TEMP_COLUMN_PREFIX, 0) == 0) {
             mutable_block.erase(name);
+            // clear TEMP columns from block to prevent from storage engine merge with this
+            // fake column
+            block->erase(name);
         }
     }