Thread safe.

Author: zerolbsony

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/protocol/session/IClientSession.java

@@ -38,19 +38,19 @@
 
 public abstract class IClientSession {
 
-  private long id;
+  private volatile long id;
 
   private ClientVersion clientVersion;
 
   private ZoneId zoneId;
 
   private TimeZone timeZone;
 
-  private long userId;
+  private volatile long userId;
 
-  private String username;
+  private volatile String username;
 
-  private boolean login = false;
+  private volatile boolean login = false;
 
   private long logInTime;