diff --git a/src/sql/ob_dml_stmt_printer.cpp b/src/sql/ob_dml_stmt_printer.cpp
index edc3161784..2c1c1ac7da 100644
--- a/src/sql/ob_dml_stmt_printer.cpp
+++ b/src/sql/ob_dml_stmt_printer.cpp
@@ -82,7 +82,7 @@ int ObDMLStmtPrinter::print_hint()
       if (OB_FAIL(query_hint.print_stmt_hint(plan_text, *stmt_))) {
         LOG_WARN("failed to print stmt hint", K(ret));
       } else if (plan_text.pos == *pos_) {
-        // no hint, rollback buffer!
+        // no hint, roolback buffer!
         *pos_ -= strlen(hint_begin);
       } else {
         *pos_ = plan_text.pos;
diff --git a/src/storage/blocksstable/ob_index_block_builder.cpp b/src/storage/blocksstable/ob_index_block_builder.cpp
index 1aa8d0223a..e02b8f6495 100644
--- a/src/storage/blocksstable/ob_index_block_builder.cpp
+++ b/src/storage/blocksstable/ob_index_block_builder.cpp
@@ -2136,6 +2136,7 @@ int ObMetaIndexBlockBuilder::build_single_macro_row_desc(const IndexMicroBlockDe
     last_leaf_rowkey_.reset();
     row_desc.is_data_block_ = true;
     row_desc.is_secondary_meta_ = true;
+    row_desc.micro_block_count_ = 1;
     if (OB_FAIL(ObBaseIndexBlockBuilder::append_row(row_desc))) {
       STORAGE_LOG(WARN, "fail to append n-1 level index row of meta", K(ret), K(roots));
     }