From 50bfde92f2922a8a807dfee195acc65272a68e3a Mon Sep 17 00:00:00 2001
From: Jiquan Long <jiquan.long@zilliz.com>
Date: Thu, 14 Mar 2024 20:33:03 +0800
Subject: [PATCH] fix: wrong num_entities used when mmap variable length data
 (#30848) (#31274)

https://github.com/milvus-io/milvus/issues/30728
pr: #30848

Signed-off-by: longjiquan <jiquan.long@zilliz.com>
---
 internal/core/src/mmap/Column.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/internal/core/src/mmap/Column.h b/internal/core/src/mmap/Column.h
index 8eae2a80db82..be7281ba0c78 100644
--- a/internal/core/src/mmap/Column.h
+++ b/internal/core/src/mmap/Column.h
@@ -326,10 +326,10 @@ class VariableColumn : public ColumnBase {
             indices_ = std::move(indices);
         }
 
+        num_rows_ = indices_.size();
+
         // for variable length memory mode only
         if (data_ == nullptr) {
-            num_rows_ = indices_.size();
-
             size_t total_size = size_;
             size_ = 0;
             Expand(total_size);