diff --git a/src/clog/ob_clog_mgr.cpp b/src/clog/ob_clog_mgr.cpp
index e32a19935..91a5882ef 100644
--- a/src/clog/ob_clog_mgr.cpp
+++ b/src/clog/ob_clog_mgr.cpp
@@ -3170,12 +3170,12 @@ int ObCLogMgr::get_election_group_priority(const uint64_t tenant_id, election::O
                               OBSERVER.get_gctx().rs_server_status_ == share::RSS_IS_WORKING;
     int tmp_ret = OB_SUCCESS;
     bool is_data_disk_error = false;
-    bool is_clog_disk_error = log_engine_.is_clog_disk_error();
+    bool is_clog_disk_hang = log_engine_.is_clog_disk_hang();
     if (OB_SUCCESS != (tmp_ret = ObIOManager::get_instance().is_disk_error(is_data_disk_error))) {
       CLOG_LOG(WARN, "is_data_disk_error failed", K(tmp_ret));
     }
-    if (is_clog_disk_error) {
-      priority.set_system_clog_disk_error();
+    if (is_clog_disk_hang) {
+      priority.set_system_clog_disk_hang();
     }
     if (is_data_disk_error) {
       priority.set_system_data_disk_error();
diff --git a/src/clog/ob_clog_writer.cpp b/src/clog/ob_clog_writer.cpp
index 314014205..225266623 100644
--- a/src/clog/ob_clog_writer.cpp
+++ b/src/clog/ob_clog_writer.cpp
@@ -37,6 +37,7 @@ namespace clog {
 ObCLogWriter::ObCLogWriter()
     : is_started_(false),
       is_disk_error_(false),
+      is_disk_hang_(false),
       file_mutex_(),
       file_writer_(NULL),
       type_(INVALID_WRITE_POOL),
@@ -111,6 +112,7 @@ void ObCLogWriter::destroy()
   info_getter_ = NULL;
   tail_ = NULL;
   is_disk_error_ = false;
+  is_disk_hang_ = false;
   is_started_ = false;
 }
 
@@ -134,34 +136,31 @@ file_id_t ObCLogWriter::get_file_id() const
   return (NULL == file_writer_) ? 0 : file_writer_->get_cur_file_id();
 }
 
-bool ObCLogWriter::is_disk_error() const
+bool ObCLogWriter::is_disk_hang() const
 {
-  bool b_ret = ATOMIC_LOAD(&is_disk_error_);
-  if (!b_ret && nullptr != file_writer_) {
-    b_ret = file_writer_->is_write_hang();
-  }
-  return b_ret;
+  bool is_disk_hang = ATOMIC_LOAD(&is_disk_hang_);
+  return is_disk_hang;
 }
 
-int ObCLogWriter::set_is_disk_error()
+int ObCLogWriter::set_is_disk_hang()
 {
   int ret = OB_SUCCESS;
   if (OB_UNLIKELY(!is_inited())) {
     ret = OB_NOT_INIT;
   } else {
-    ATOMIC_STORE(&is_disk_error_, true);
+    ATOMIC_STORE(&is_disk_hang_, true);
     CLOG_LOG(WARN, "clog disk may be hang or something error has happen!");
   }
   return ret;
 }
 
-int ObCLogWriter::reset_is_disk_error()
+int ObCLogWriter::reset_is_disk_hang()
 {
   int ret = OB_SUCCESS;
   if (OB_UNLIKELY(!is_inited())) {
     ret = OB_NOT_INIT;
   } else {
-    ATOMIC_STORE(&is_disk_error_, false);
+    ATOMIC_STORE(&is_disk_hang_, false);
     CLOG_LOG(TRACE, "reset clog disk status to normal");
   }
   return ret;
@@ -241,7 +240,7 @@ void ObCLogWriter::process_log_items(common::ObIBaseLogItem** items, const int64
       do {
         // TODO: flush log will not return OB_TIMEOUT, other IO error will be treated as bug
         if (OB_FAIL(file_writer_->flush(info_getter_, log_cache_, tail_, flush_start_offset))) {
-          set_is_disk_error();
+          is_disk_error_ = true;
           // flush log to disk until die when IO hang, other IO error will be treated as bug
           if (OB_TIMEOUT == ret && REACH_TIME_INTERVAL(60 * 1000 * 1000)) {
             ret = OB_IO_ERROR;
@@ -250,7 +249,7 @@ void ObCLogWriter::process_log_items(common::ObIBaseLogItem** items, const int64
             CLOG_LOG(ERROR, "Fail to flush clog to disk, ", K(ret));
           }
         } else {
-          reset_is_disk_error();
+          is_disk_error_ = false;
         }
       } while (!has_stoped() && OB_TIMEOUT == ret);
     }
@@ -386,8 +385,8 @@ int ObCLogDiskErrorCB::callback()
   storage::ObPartitionService& partition_service = storage::ObPartitionService::get_instance();
   if (OB_ISNULL(host_)) {
     ret = OB_ERR_UNEXPECTED;
-  } else if (OB_FAIL(host_->set_is_disk_error())) {
-    CLOG_LOG(ERROR, "ObCLogDiskErrorCB set_is_disk_error failed", K(ret));
+  } else if (OB_FAIL(host_->set_is_disk_hang())) {
+    CLOG_LOG(ERROR, "ObCLogDiskErrorCB set_is_disk_hang failed", K(ret));
   } else if (OB_FAIL(partition_service.try_revoke_all_leader(ObElection::RevokeType::CLOG_DISK_HANG))) {
     CLOG_LOG(ERROR, "ObCLogDiskErrorCB try_revoke_all_leader failed", K(ret));
   }
@@ -400,7 +399,7 @@ void ObCLogDiskErrorCB::destroy()
   // If disk has real error, may cause is_disk_error be false,
   // however, observer will be killed.
   if (OB_NOT_NULL(host_)) {
-    (void)host_->reset_is_disk_error();
+    (void)host_->reset_is_disk_hang();
   }
 }
 
diff --git a/src/clog/ob_clog_writer.h b/src/clog/ob_clog_writer.h
index 6cff04226..3fada8511 100644
--- a/src/clog/ob_clog_writer.h
+++ b/src/clog/ob_clog_writer.h
@@ -65,9 +65,13 @@ public:
   virtual void destroy();
   int switch_file();
   file_id_t get_file_id() const;
-  bool is_disk_error() const;
-  int set_is_disk_error();
-  int reset_is_disk_error();
+  bool is_disk_hang() const;
+  inline bool is_disk_error() const
+  {
+    return true == is_disk_error_;
+  }
+  int set_is_disk_hang();
+  int reset_is_disk_hang();
 
 protected:
   virtual void process_log_items(common::ObIBaseLogItem** items, const int64_t item_cnt, int64_t& finish_cnt);
@@ -99,6 +103,7 @@ private:
   int inner_switch_file();
   bool is_started_;
   bool is_disk_error_;
+  bool is_disk_hang_;
   lib::ObMutex file_mutex_;
   ObCLogBaseFileWriter* file_writer_;
   ObLogWritePoolType type_;
diff --git a/src/clog/ob_i_log_engine.h b/src/clog/ob_i_log_engine.h
index 9efe11a11..134c6b51c 100644
--- a/src/clog/ob_i_log_engine.h
+++ b/src/clog/ob_i_log_engine.h
@@ -198,7 +198,7 @@ public:
   virtual int check_is_clog_obsoleted(const common::ObPartitionKey& partition_key, const file_id_t file_id,
       const offset_t offset, bool& is_obsoleted) const = 0;
 
-  virtual bool is_clog_disk_error() const = 0;
+  virtual bool is_clog_disk_hang() const = 0;
   // ================== interface for ObIlogStorage end  ====================
 };
 
diff --git a/src/clog/ob_log_engine.cpp b/src/clog/ob_log_engine.cpp
index 00bee1771..7baeecb82 100644
--- a/src/clog/ob_log_engine.cpp
+++ b/src/clog/ob_log_engine.cpp
@@ -2553,16 +2553,16 @@ int ObLogEngine::get_ilog_using_disk_space(int64_t& space) const
   return ret;
 }
 
-bool ObLogEngine::is_clog_disk_error() const
+bool ObLogEngine::is_clog_disk_hang() const
 {
-  bool is_disk_error = false;
-  const ObCommitLogEnv* env = get_clog_env_();
+  bool is_disk_hang = false;
+  const ObCommitLogEnv *env = get_clog_env_();
   if (IS_NOT_INIT) {
-    is_disk_error = false;
+    is_disk_hang = false;
   } else if (OB_LIKELY(NULL != env)) {
-    is_disk_error = (env->get_writer()).is_disk_error();
+    is_disk_hang = (env->get_writer()).is_disk_hang();
   }
-  return is_disk_error;
+  return is_disk_hang;
 }
 
 NetworkLimitManager::NetworkLimitManager() : is_inited_(false), addr_array_(), ethernet_speed_(0), hash_map_()
diff --git a/src/clog/ob_log_engine.h b/src/clog/ob_log_engine.h
index 43c14b600..840b56960 100644
--- a/src/clog/ob_log_engine.h
+++ b/src/clog/ob_log_engine.h
@@ -531,10 +531,9 @@ public:
 
   int check_is_clog_obsoleted(const common::ObPartitionKey& partition_key, const file_id_t file_id,
       const offset_t offset, bool& is_obsoleted) const override;
-  // ================== interface for ObIlogStorage end  ====================
-  int get_clog_using_disk_space(int64_t& space) const;
-  int get_ilog_using_disk_space(int64_t& space) const;
-  bool is_clog_disk_error() const override;
+  int get_clog_using_disk_space(int64_t &space) const;
+  int get_ilog_using_disk_space(int64_t &space) const;
+  bool is_clog_disk_hang() const;
 
 private:
   int fetch_log_from_server(
diff --git a/src/clog/ob_partition_log_service.cpp b/src/clog/ob_partition_log_service.cpp
index e063f954a..1e2e2d493 100644
--- a/src/clog/ob_partition_log_service.cpp
+++ b/src/clog/ob_partition_log_service.cpp
@@ -3908,7 +3908,8 @@ int ObPartitionLogService::on_get_election_priority(election::ObElectionPriority
 #endif
     bool is_tenant_out_of_mem = is_tenant_out_of_memory_();
     bool is_data_disk_error = false;
-    bool is_clog_disk_error = log_engine_->is_clog_disk_error();
+    bool is_disk_space_enough = log_engine_->is_disk_space_enough();
+    bool is_clog_disk_hang = log_engine_->is_clog_disk_hang();
     const ObReplicaProperty replica_property = mm_.get_replica_property();
     const uint64_t log_id = sw_.get_max_confirmed_log_id();
     if (OB_SUCCESS != (tmp_ret = ObIOManager::get_instance().is_disk_error(is_data_disk_error))) {
@@ -3933,8 +3934,11 @@ int ObPartitionLogService::on_get_election_priority(election::ObElectionPriority
     if (OB_SUCCESS != (ret = priority.init(is_candidate, mm_.get_timestamp(), log_id, zone_priority))) {
       CLOG_LOG(WARN, "priority init error", K_(partition_key), K(ret));
     } else {
-      if (is_clog_disk_error) {
-        priority.set_system_clog_disk_error();
+      if (!is_disk_space_enough) {
+        priority.set_system_disk_full();
+      }
+      if (is_clog_disk_hang) {
+        priority.set_system_clog_disk_hang();
       }
       if (is_data_disk_error) {
         priority.set_system_data_disk_error();
@@ -6702,7 +6706,7 @@ int ObPartitionLogService::check_is_normal_partition(bool& is_normal_partition)
   bool is_out_of_memory = false;
   bool is_disk_not_enough = false;
   bool is_disk_error = false;
-  bool is_clog_disk_error = false;
+  bool is_clog_disk_hang = false;
   bool is_archive_restoring = false;
   if (IS_NOT_INIT) {
     ret = OB_NOT_INIT;
@@ -6712,13 +6716,13 @@ int ObPartitionLogService::check_is_normal_partition(bool& is_normal_partition)
   } else if (OB_FAIL(ObIOManager::get_instance().is_disk_error(is_disk_error))) {
     CLOG_LOG(ERROR, "is_disk_error failed", K(ret), K(partition_key_));
   } else {
-    is_clog_disk_error = log_engine_->is_clog_disk_error();
+    is_clog_disk_hang = log_engine_->is_clog_disk_hang();
     is_disk_not_enough = !log_engine_->is_disk_space_enough();
     // physical restoring replica cannot participate in member change.
     // because its election module has not been started, it cannot vote.
     is_archive_restoring = restore_mgr_.is_archive_restoring();
     is_normal_partition =
-        !(is_disk_not_enough || is_out_of_memory || is_disk_error || is_clog_disk_error || is_archive_restoring);
+        !(is_disk_not_enough || is_out_of_memory || is_disk_error || is_clog_disk_hang || is_archive_restoring);
   }
   return ret;
 }
diff --git a/src/election/ob_election_group_priority.cpp b/src/election/ob_election_group_priority.cpp
index 4b77e77bf..f81cafbc1 100644
--- a/src/election/ob_election_group_priority.cpp
+++ b/src/election/ob_election_group_priority.cpp
@@ -64,9 +64,9 @@ int ObElectionGroupPriority::compare(const ObElectionGroupPriority& priority) co
   return ret;
 }
 
-void ObElectionGroupPriority::set_system_clog_disk_error()
+void ObElectionGroupPriority::set_system_clog_disk_hang()
 {
-  system_score_ += SYSTEM_SCORE_CLOG_DISK_ERROR * 100;
+  system_score_ += SYSTEM_SCORE_CLOG_DISK_HANG * 100;
 }
 
 void ObElectionGroupPriority::set_system_data_disk_error()
diff --git a/src/election/ob_election_group_priority.h b/src/election/ob_election_group_priority.h
index df6de3d68..1da2a2634 100644
--- a/src/election/ob_election_group_priority.h
+++ b/src/election/ob_election_group_priority.h
@@ -48,7 +48,7 @@ public:
   {
     return system_score_;
   }
-  void set_system_clog_disk_error();
+  void set_system_clog_disk_hang();
   void set_system_data_disk_error();
   void set_system_service_not_started();
 
@@ -59,7 +59,7 @@ public:
   DECLARE_TO_STRING_AND_YSON;
 
 private:
-  const static int64_t SYSTEM_SCORE_CLOG_DISK_ERROR = (1 << 6);
+  const static int64_t SYSTEM_SCORE_CLOG_DISK_HANG = (1 << 6);
   const static int64_t SYSTEM_SCORE_DATA_DISK_ERROR = (1 << 4);
   const static int64_t SYSTEM_SCORE_SERVICE_NOT_STARTED = (1 << 1);
 
diff --git a/src/election/ob_election_priority.cpp b/src/election/ob_election_priority.cpp
index 55c3c8611..0c77bf33e 100644
--- a/src/election/ob_election_priority.cpp
+++ b/src/election/ob_election_priority.cpp
@@ -197,9 +197,14 @@ bool ObElectionPriority::is_in_election_blacklist() const
   return (system_score_ / 100) & SYSTEM_SCORE_IN_ELECTION_BLACKLIST;
 }
 
-void ObElectionPriority::set_system_clog_disk_error()
+void ObElectionPriority::set_system_disk_full()
 {
-  system_score_ += SYSTEM_SCORE_CLOG_DISK_ERROR * 100;
+  system_score_ += SYSTEM_SCORE_DISK_FULL * 100;
+}
+
+void ObElectionPriority::set_system_clog_disk_hang()
+{
+  system_score_ += SYSTEM_SCORE_CLOG_DISK_HANG * 100;
 }
 
 void ObElectionPriority::set_system_tenant_out_of_memory()
diff --git a/src/election/ob_election_priority.h b/src/election/ob_election_priority.h
index 1a3b134c3..cdaf6eac9 100644
--- a/src/election/ob_election_priority.h
+++ b/src/election/ob_election_priority.h
@@ -76,7 +76,8 @@ public:
   }
   int64_t get_system_score_without_election_blacklist() const;
   bool is_in_election_blacklist() const;
-  void set_system_clog_disk_error();
+  void set_system_disk_full();
+  void set_system_clog_disk_hang();
   void set_system_tenant_out_of_memory();
   void set_system_data_disk_error();
   void set_system_need_rebuild();
@@ -96,8 +97,10 @@ private:
   int compare_(const ObElectionPriority& priority, const bool with_locality, const bool with_log_id) const;
 
 private:
-  const static int64_t SYSTEM_SCORE_CLOG_DISK_ERROR = (1 << 6);
-  const static int64_t SYSTEM_SCORE_TENANT_OUT_OF_MEM = (1 << 5);
+  const static int64_t SYSTEM_SCORE_DISK_FULL = (1 << 8);
+  const static int64_t SYSTEM_SCORE_NON_FULL_REPLICA = (1 << 7);
+  const static int64_t SYSTEM_SCORE_CLOG_DISK_HANG = (1 << 6);
+  const static int64_t SYSTEM_SCORE_TENANT_OUT_OF_MEM = (1 << 5);  // tenant memstore is full
   const static int64_t SYSTEM_SCORE_DATA_DISK_ERROR = (1 << 4);
   const static int64_t SYSTEM_SCORE_NEED_REBUILD = (1 << 3);
   const static int64_t SYSTEM_SCORE_IN_ELECTION_BLACKLIST = (1 << 2);