diff --git a/storage/innobase/lock/lock0lock.cc b/storage/innobase/lock/lock0lock.cc
index ea67e4a895f..c267e45ebe6 100644
--- a/storage/innobase/lock/lock0lock.cc
+++ b/storage/innobase/lock/lock0lock.cc
@@ -500,9 +500,8 @@ void lock_sys_t::close()
 requesting record lock are brute force (BF). If they are check is
 this BF-BF wait correct and if not report BF wait and assert.
 
-@param[in]	lock_rec	other waiting record lock
-@param[in]	trx		trx requesting conflicting record lock
-@param[in]	type_mode	lock type mode of requesting trx
+@param lock  other waiting lock
+@param trx   transaction requesting conflicting lock
 */
 static void wsrep_assert_no_bf_bf_wait(const lock_t *lock, const trx_t *trx,
                                        const unsigned type_mode = LOCK_NONE)
diff --git a/storage/innobase/log/log0recv.cc b/storage/innobase/log/log0recv.cc
index e6772492ab9..00b92285677 100644
--- a/storage/innobase/log/log0recv.cc
+++ b/storage/innobase/log/log0recv.cc
@@ -4468,10 +4468,9 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 	ut_d(mysql_mutex_unlock(&buf_pool.flush_list_mutex));
 
 	if (srv_force_recovery >= SRV_FORCE_NO_LOG_REDO) {
-
-		ib::info() << "innodb_force_recovery=6 skips redo log apply";
-
-		return(DB_SUCCESS);
+		sql_print_information("InnoDB: innodb_force_recovery=6"
+				      " skips redo log apply");
+		return err;
 	}
 
 	mysql_mutex_lock(&log_sys.mutex);
@@ -4487,13 +4486,9 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 
 	ut_ad(RECV_SCAN_SIZE <= srv_log_buffer_size);
 
-
 	ut_ad(recv_sys.pages.empty());
 	contiguous_lsn = checkpoint_lsn;
 	switch (log_sys.log.format) {
-	case 0:
-		mysql_mutex_unlock(&log_sys.mutex);
-		return DB_SUCCESS;
 	default:
 		if (end_lsn == 0) {
 			break;
@@ -4503,8 +4498,13 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 			break;
 		}
 		recv_sys.set_corrupt_log();
+	err_exit:
+		err = DB_ERROR;
+		/* fall through */
+	func_exit:
+	case 0:
 		mysql_mutex_unlock(&log_sys.mutex);
-		return(DB_ERROR);
+		return err;
 	}
 
 	size_t sizeof_checkpoint;
@@ -4521,14 +4521,15 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 	ut_ad(!recv_sys.is_corrupt_fs() || !srv_force_recovery);
 
 	if (srv_read_only_mode && recv_needed_recovery) {
-		mysql_mutex_unlock(&log_sys.mutex);
-		return(DB_READ_ONLY);
+	read_only:
+		err = DB_READ_ONLY;
+		goto func_exit;
 	}
 
 	if (recv_sys.is_corrupt_log() && !srv_force_recovery) {
-		mysql_mutex_unlock(&log_sys.mutex);
-		ib::warn() << "Log scan aborted at LSN " << contiguous_lsn;
-		return(DB_ERROR);
+		sql_print_warning("InnoDB: Log scan aborted at LSN " LSN_PF,
+				  contiguous_lsn);
+		goto err_exit;
 	}
 
 	/* If we fail to open a tablespace while looking for FILE_CHECKPOINT, we
@@ -4536,14 +4537,12 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 	would not be able to open an encrypted tablespace and the flag could be
 	set. */
 	if (recv_sys.is_corrupt_fs()) {
-		mysql_mutex_unlock(&log_sys.mutex);
-		return DB_ERROR;
+		goto err_exit;
 	}
 
 	if (recv_sys.mlog_checkpoint_lsn == 0) {
 		lsn_t scan_lsn = log_sys.log.scanned_lsn;
 		if (!srv_read_only_mode && scan_lsn != checkpoint_lsn) {
-			mysql_mutex_unlock(&log_sys.mutex);
 			ib::error err;
 			err << "Missing FILE_CHECKPOINT";
 			if (end_lsn) {
@@ -4551,7 +4550,7 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 			}
 			err << " between the checkpoint " << checkpoint_lsn
 			    << " and the end " << scan_lsn << ".";
-			return(DB_ERROR);
+			goto err_exit;
 		}
 
 		log_sys.log.scanned_lsn = checkpoint_lsn;
@@ -4562,8 +4561,7 @@ recv_recovery_from_checkpoint_start(lsn_t flush_lsn)
 
 		if ((recv_sys.is_corrupt_log() && !srv_force_recovery)
 		    || recv_sys.is_corrupt_fs()) {
-			mysql_mutex_unlock(&log_sys.mutex);
-			return(DB_ERROR);
+			goto err_exit;
 		}
 	}
 
@@ -4593,19 +4591,17 @@ completed:
 		}
 
 		if (!recv_needed_recovery) {
-
-			ib::info()
-				<< "The log sequence number " << flush_lsn
-				<< " in the system tablespace does not match"
-				   " the log sequence number "
-				<< checkpoint_lsn << " in the "
-				<< LOG_FILE_NAME << "!";
+			sql_print_information(
+				"InnoDB: The log sequence number " LSN_PF
+				" in the system tablespace does not match"
+				" the log sequence number " LSN_PF
+				" in the ib_logfile0!",
+				flush_lsn, checkpoint_lsn);
 
 			if (srv_read_only_mode) {
-				ib::error() << "innodb_read_only"
-					" prevents crash recovery";
-				mysql_mutex_unlock(&log_sys.mutex);
-				return(DB_READ_ONLY);
+				sql_print_error("InnoDB: innodb_read_only"
+						" prevents crash recovery");
+				goto read_only;
 			}
 
 			recv_needed_recovery = true;
@@ -4626,8 +4622,7 @@ completed:
 			rescan, missing_tablespace);
 
 		if (err != DB_SUCCESS) {
-			mysql_mutex_unlock(&log_sys.mutex);
-			return(err);
+			goto func_exit;
 		}
 
 		/* If there is any missing tablespace and rescan is needed
@@ -4656,8 +4651,7 @@ completed:
 					rescan, missing_tablespace);
 
 			if (err != DB_SUCCESS) {
-				mysql_mutex_unlock(&log_sys.mutex);
-				return err;
+				goto func_exit;
 			}
 
 			rescan = true;
@@ -4681,8 +4675,7 @@ completed:
 			if ((recv_sys.is_corrupt_log()
 			     && !srv_force_recovery)
 			    || recv_sys.is_corrupt_fs()) {
-				mysql_mutex_unlock(&log_sys.mutex);
-				return(DB_ERROR);
+				goto err_exit;
 			}
 
 			ut_ad(contiguous_lsn <= recv_sys.recovered_lsn);
@@ -4700,26 +4693,26 @@ completed:
 		ut_ad(!rescan || recv_sys.pages.empty());
 	}
 
-	if (log_sys.is_physical()
-	    && (log_sys.log.scanned_lsn < checkpoint_lsn
-		|| log_sys.log.scanned_lsn < recv_max_page_lsn)) {
-
-		ib::error() << "We scanned the log up to "
-			<< log_sys.log.scanned_lsn
-			<< ". A checkpoint was at " << checkpoint_lsn << " and"
-			" the maximum LSN on a database page was "
-			<< recv_max_page_lsn << ". It is possible that the"
-			" database is now corrupt!";
-	}
-
-	if (recv_sys.recovered_lsn < checkpoint_lsn) {
-		mysql_mutex_unlock(&log_sys.mutex);
-
-		ib::error() << "Recovered only to lsn:"
-			    << recv_sys.recovered_lsn
-			    << " checkpoint_lsn: " << checkpoint_lsn;
-
-		return(DB_ERROR);
+	if (!log_sys.is_physical()) {
+	} else if (recv_sys.recovered_lsn < checkpoint_lsn
+		   || recv_sys.recovered_lsn < end_lsn) {
+		sql_print_error("InnoDB: The log was only scanned up to "
+				LSN_PF ", while the current LSN at the "
+				"time of the latest checkpoint " LSN_PF
+				" was " LSN_PF "!",
+				recv_sys.recovered_lsn,
+				checkpoint_lsn, end_lsn);
+		goto err_exit;
+	} else if (log_sys.log.scanned_lsn < checkpoint_lsn
+		   || log_sys.log.scanned_lsn < end_lsn
+		   || log_sys.log.scanned_lsn < recv_max_page_lsn) {
+		sql_print_error("InnoDB: We scanned the log up to " LSN_PF
+				". A checkpoint was at " LSN_PF
+				" and the maximum LSN on a database page was "
+				LSN_PF ". It is possible that the"
+				" database is now corrupt!",
+				log_sys.log.scanned_lsn, checkpoint_lsn,
+				recv_max_page_lsn);
 	}
 
 	log_sys.next_checkpoint_lsn = checkpoint_lsn;
@@ -4751,20 +4744,19 @@ completed:
 
 	log_sys.next_checkpoint_no = ++checkpoint_no;
 
-	DBUG_EXECUTE_IF("before_final_redo_apply",
-			mysql_mutex_unlock(&log_sys.mutex);
-			return DB_ERROR;);
+	DBUG_EXECUTE_IF("before_final_redo_apply", goto err_exit;);
 	mysql_mutex_lock(&recv_sys.mutex);
 	recv_sys.apply_log_recs = true;
 	recv_no_ibuf_operations = false;
 	ut_d(recv_no_log_write = srv_operation == SRV_OPERATION_RESTORE
 	     || srv_operation == SRV_OPERATION_RESTORE_EXPORT);
+
 	if (srv_operation == SRV_OPERATION_NORMAL) {
 		err = recv_rename_files();
 	}
-	mysql_mutex_unlock(&recv_sys.mutex);
 
 	recv_lsn_checks_on = true;
+	mysql_mutex_unlock(&recv_sys.mutex);
 
 	/* The database is now ready to start almost normal processing of user
 	transactions: transaction rollbacks and the application of the log
@@ -4773,9 +4765,7 @@ completed:
 	    && !srv_force_recovery) {
 		err = DB_CORRUPTION;
 	}
-
-	mysql_mutex_unlock(&log_sys.mutex);
-	return err;
+	goto func_exit;
 }
 
 bool recv_dblwr_t::validate_page(const page_id_t page_id,
diff --git a/storage/spider/spd_db_conn.cc b/storage/spider/spd_db_conn.cc
index ce415439653..eeff97f0603 100644
--- a/storage/spider/spd_db_conn.cc
+++ b/storage/spider/spd_db_conn.cc
@@ -1512,6 +1512,7 @@ int spider_db_append_key_hint(
     if (str->reserve(
           hint_str_len - 2 + SPIDER_SQL_INDEX_USE_LEN +
           SPIDER_SQL_OPEN_PAREN_LEN + SPIDER_SQL_CLOSE_PAREN_LEN))
+      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
     hint_str += 2;
     str->q_append(SPIDER_SQL_INDEX_USE_STR, SPIDER_SQL_INDEX_USE_LEN);
     str->q_append(SPIDER_SQL_OPEN_PAREN_STR, SPIDER_SQL_OPEN_PAREN_LEN);
@@ -1524,10 +1525,11 @@ int spider_db_append_key_hint(
     if (str->reserve(
           hint_str_len - 3 + SPIDER_SQL_INDEX_IGNORE_LEN +
           SPIDER_SQL_OPEN_PAREN_LEN + SPIDER_SQL_CLOSE_PAREN_LEN))
+      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
     hint_str += 3;
     str->q_append(SPIDER_SQL_INDEX_IGNORE_STR, SPIDER_SQL_INDEX_IGNORE_LEN);
     str->q_append(SPIDER_SQL_OPEN_PAREN_STR, SPIDER_SQL_OPEN_PAREN_LEN);
-    str->q_append(hint_str, hint_str_len - 2);
+    str->q_append(hint_str, hint_str_len - 3);
     str->q_append(SPIDER_SQL_CLOSE_PAREN_STR, SPIDER_SQL_CLOSE_PAREN_LEN);
   } else if (str->reserve(hint_str_len + SPIDER_SQL_SPACE_LEN))
     DBUG_RETURN(HA_ERR_OUT_OF_MEM);
diff --git a/storage/spider/spd_db_mysql.cc b/storage/spider/spd_db_mysql.cc
index 27b07ea824c..20ee785e879 100644
--- a/storage/spider/spd_db_mysql.cc
+++ b/storage/spider/spd_db_mysql.cc
@@ -7686,8 +7686,8 @@ int spider_mbase_share::convert_key_hint_str()
       roop_count < (int) table_share->keys; roop_count++, tmp_key_hint++)
     {
       tmp_key_hint->length(0);
-      if (tmp_key_hint->append(spider_share->key_hint->ptr(),
-        spider_share->key_hint->length(), system_charset_info))
+      if (tmp_key_hint->append(spider_share->key_hint[roop_count].ptr(),
+        spider_share->key_hint[roop_count].length(), system_charset_info))
         DBUG_RETURN(HA_ERR_OUT_OF_MEM);
     }
   } else {