diff --git a/be/src/olap/types.h b/be/src/olap/types.h
index 0d8aec385c6d01..e42aa80028d46c 100644
--- a/be/src/olap/types.h
+++ b/be/src/olap/types.h
@@ -327,7 +327,7 @@ class ArrayTypeInfo : public TypeInfo {
     inline uint32_t hash_code(const void* data, uint32_t seed) const override {
         auto value = reinterpret_cast<const CollectionValue*>(data);
         auto len = value->length();
-        uint32_t result = HashUtil::hash(&len, sizeof(size_t), seed);
+        uint32_t result = HashUtil::hash(&len, sizeof(len), seed);
         for (size_t i = 0; i < len; ++i) {
             if (value->is_null_at(i)) {
                 result = seed * result;
diff --git a/be/src/runtime/fragment_mgr.cpp b/be/src/runtime/fragment_mgr.cpp
index 415e188fd19963..9e51009b3fc7ec 100644
--- a/be/src/runtime/fragment_mgr.cpp
+++ b/be/src/runtime/fragment_mgr.cpp
@@ -40,9 +40,9 @@
 #include "runtime/exec_env.h"
 #include "runtime/plan_fragment_executor.h"
 #include "runtime/runtime_filter_mgr.h"
-#include "runtime/stream_load/stream_load_pipe.h"
 #include "runtime/stream_load/load_stream_mgr.h"
 #include "runtime/stream_load/stream_load_context.h"
+#include "runtime/stream_load/stream_load_pipe.h"
 #include "service/backend_options.h"
 #include "util/debug_util.h"
 #include "util/doris_metrics.h"
@@ -188,8 +188,8 @@ FragmentExecState::FragmentExecState(const TUniqueId& query_id,
                                               this, std::placeholders::_1, std::placeholders::_2,
                                               std::placeholders::_3)),
           _timeout_second(-1),
-          _fragments_ctx(std::move(fragments_ctx)),
-          _set_rsc_info(false) {
+          _set_rsc_info(false),
+          _fragments_ctx(std::move(fragments_ctx)) {
     _start_time = DateTimeValue::local_time();
     _coord_addr = _fragments_ctx->coord_addr;
 }
@@ -489,11 +489,9 @@ Status FragmentMgr::exec_plan_fragment(const TExecPlanFragmentParams& params) {
         stream_load_cxt->need_commit_self = true;
         stream_load_cxt->need_rollback = true;
         // total_length == -1 means read one message from pipe in once time, don't care the length.
-        auto pipe = std::make_shared<StreamLoadPipe>(
-                1024 * 1024 /* max_buffered_bytes */,
-                64 * 1024 /* min_chunk_size */,
-                -1 /* total_length */,
-                true /* use_proto */);
+        auto pipe = std::make_shared<StreamLoadPipe>(1024 * 1024 /* max_buffered_bytes */,
+                                                     64 * 1024 /* min_chunk_size */,
+                                                     -1 /* total_length */, true /* use_proto */);
         stream_load_cxt->body_sink = pipe;
         stream_load_cxt->max_filter_ratio = params.txn_conf.max_filter_ratio;
 
@@ -508,7 +506,8 @@ Status FragmentMgr::exec_plan_fragment(const TExecPlanFragmentParams& params) {
     }
 }
 
-void FragmentMgr::set_pipe(const TUniqueId& fragment_instance_id, std::shared_ptr<StreamLoadPipe> pipe) {
+void FragmentMgr::set_pipe(const TUniqueId& fragment_instance_id,
+                           std::shared_ptr<StreamLoadPipe> pipe) {
     {
         std::lock_guard<std::mutex> lock(_lock);
         auto iter = _fragment_map.find(fragment_instance_id);
diff --git a/be/src/runtime/fragment_mgr.h b/be/src/runtime/fragment_mgr.h
index 2ea0cba4dbd98a..72c2f6024b32d8 100644
--- a/be/src/runtime/fragment_mgr.h
+++ b/be/src/runtime/fragment_mgr.h
@@ -55,7 +55,7 @@ std::string to_load_error_http_path(const std::string& file_name);
 // This class used to manage all the fragment execute in this instance
 class FragmentMgr : public RestMonitorIface {
 public:
-    typedef std::function<void(PlanFragmentExecutor*)> FinishCallback;
+    using FinishCallback = std::function<void(PlanFragmentExecutor*)>;
 
     FragmentMgr(ExecEnv* exec_env);
     virtual ~FragmentMgr();
diff --git a/be/src/runtime/tuple.h b/be/src/runtime/tuple.h
index f08d2378bd381f..eeb4edf6b4a6e9 100644
--- a/be/src/runtime/tuple.h
+++ b/be/src/runtime/tuple.h
@@ -58,7 +58,7 @@ class Tuple {
         return result;
     }
 
-    void init(int size) { bzero(this, size); }
+    void init(int size) { bzero(_data, size); }
 
     // The total size of all data represented in this tuple (tuple data and referenced
     // string and collection data).
@@ -120,69 +120,68 @@ class Tuple {
     // this is a no-op (but we don't have to branch to check is slots are nulalble).
     void set_null(const NullIndicatorOffset& offset) {
         //DCHECK(offset.bit_mask != 0);
-        char* null_indicator_byte = reinterpret_cast<char*>(this) + offset.byte_offset;
+        char* null_indicator_byte = &_data[offset.byte_offset];
         *null_indicator_byte |= offset.bit_mask;
     }
 
     // Turn null indicator bit off.
     void set_not_null(const NullIndicatorOffset& offset) {
-        char* null_indicator_byte = reinterpret_cast<char*>(this) + offset.byte_offset;
+        char* null_indicator_byte = &_data[offset.byte_offset];
         *null_indicator_byte &= ~offset.bit_mask;
     }
 
     bool is_null(const NullIndicatorOffset& offset) const {
-        const char* null_indicator_byte = reinterpret_cast<const char*>(this) + offset.byte_offset;
+        const char* null_indicator_byte = &_data[offset.byte_offset];
         return (*null_indicator_byte & offset.bit_mask) != 0;
     }
 
     void* get_slot(int offset) {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<char*>(this) + offset;
+        return &_data[offset];
     }
 
     const void* get_slot(int offset) const {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<const char*>(this) + offset;
+        return &_data[offset];
     }
 
     StringValue* get_string_slot(int offset) {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<StringValue*>(reinterpret_cast<char*>(this) + offset);
+        return reinterpret_cast<StringValue*>(&_data[offset]);
     }
 
     const StringValue* get_string_slot(int offset) const {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<const StringValue*>(reinterpret_cast<const char*>(this) + offset);
+        return reinterpret_cast<const StringValue*>(&_data[offset]);
     }
 
     CollectionValue* get_collection_slot(int offset) {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<CollectionValue*>(reinterpret_cast<char*>(this) + offset);
+        return reinterpret_cast<CollectionValue*>(&_data[offset]);
     }
 
     const CollectionValue* get_collection_slot(int offset) const {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<const CollectionValue*>(reinterpret_cast<const char*>(this) +
-                                                        offset);
+        return reinterpret_cast<const CollectionValue*>(&_data[offset]);
     }
 
     DateTimeValue* get_datetime_slot(int offset) {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<DateTimeValue*>(reinterpret_cast<char*>(this) + offset);
+        return reinterpret_cast<DateTimeValue*>(&_data[offset]);
     }
 
     DecimalV2Value* get_decimalv2_slot(int offset) {
         DCHECK(offset != -1); // -1 offset indicates non-materialized slot
-        return reinterpret_cast<DecimalV2Value*>(reinterpret_cast<char*>(this) + offset);
+        return reinterpret_cast<DecimalV2Value*>(&_data[offset]);
     }
 
-    void* get_data() { return this; }
+    void* get_data() { return _data; }
 
     std::string to_string(const TupleDescriptor& d) const;
     static std::string to_string(const Tuple* t, const TupleDescriptor& d);
 
 private:
-    void* _data;
+    char _data[0];
 };
 
 } // namespace doris
diff --git a/be/src/util/parse_util.cpp b/be/src/util/parse_util.cpp
index 0a54dd99716c70..4b4926a645497e 100644
--- a/be/src/util/parse_util.cpp
+++ b/be/src/util/parse_util.cpp
@@ -67,7 +67,7 @@ int64_t ParseUtil::parse_mem_spec(const std::string& mem_spec_str, bool* is_perc
     }
 
     StringParser::ParseResult result;
-    int64_t bytes;
+    int64_t bytes = -1;
 
     if (multiplier != -1 || *is_percent) {
         // Parse float - MB or GB or percent
diff --git a/be/test/olap/column_vector_test.cpp b/be/test/olap/column_vector_test.cpp
index 476f6ceb4c4431..8f537b40e44a80 100644
--- a/be/test/olap/column_vector_test.cpp
+++ b/be/test/olap/column_vector_test.cpp
@@ -184,6 +184,8 @@ TEST_F(ColumnVectorTest, array_column_vector_test) {
         test_read_write_array_column_vector<OLAP_FIELD_TYPE_TINYINT>(type_info, num_array,
                                                                      array_val);
 
+        // Test hash_code in CollectionValue
+        type_info->hash_code(array_val, 0);
         delete[] array_val;
         delete[] item_val;
     }