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yiguolei pushed a commit to branch branch-2.1
in repository https://gitbox.apache.org/repos/asf/doris.git

commit de3fdc7d08ad404c36e1c39441481703ba256b8f
Author: Gavin Chou <[email protected]>
AuthorDate: Sun Jan 14 15:49:06 2024 +0800

    [chore](Fix) Fix uninitilized buffer in read_cluster_id() (#29949)
---
 be/src/olap/data_dir.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/be/src/olap/data_dir.cpp b/be/src/olap/data_dir.cpp
index a2323dcbc1e..24dc88169b8 100644
--- a/be/src/olap/data_dir.cpp
+++ b/be/src/olap/data_dir.cpp
@@ -157,9 +157,10 @@ Status DataDir::read_cluster_id(const std::string& 
cluster_id_path, int32_t* clu
         size_t fsize = reader->size();
         if (fsize > 0) {
             std::string content;
-            content.reserve(fsize);
+            content.resize(fsize, '\0');
             size_t bytes_read = 0;
             RETURN_IF_ERROR(reader->read_at(0, {content.data(), fsize}, 
&bytes_read));
+            DCHECK_EQ(fsize, bytes_read);
             *cluster_id = std::stoi(content);
         }
     }


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