fix jt conversation

iotdb/src/main/java/org/apache/iotdb/db/metadata/ColumnSchema.java

@@ -28,15 +28,16 @@ public class ColumnSchema implements Serializable {
 
   private static final long serialVersionUID = -8257474930341487207L;
 
-  public void setName(String name) {
-    this.name = name;
-  }
 
   private String name;
   public TSDataType dataType;
   public TSEncoding encoding;
   private Map<String, String> args;
 
+  public void setName(String name) {
+    this.name = name;
+  }
+
   /**
    * constructor of ColumnSchema.
    *

iotdb/src/main/java/org/apache/iotdb/db/sql/parse/AstErrorNode.java

@@ -26,7 +26,11 @@ import org.antlr.runtime.tree.CommonErrorNode;
 public class AstErrorNode extends AstNode {
 
   private static final long serialVersionUID = 1L;
-  transient CommonErrorNode delegate;
+
+  /**
+   * delegate needn't be serialized.
+   */
+  private transient CommonErrorNode delegate;
 
   public AstErrorNode(TokenStream input, Token start, Token stop, RecognitionException e) {
     delegate = new CommonErrorNode(input, start, stop, e);

iotdb/src/main/java/org/apache/iotdb/db/utils/AuthUtils.java

@@ -42,7 +42,9 @@ public class AuthUtils {
   private static final String ENCRYPT_ALGORITHM = "MD5";
   private static final String STRING_ENCODING = "utf-8";
 
-  private AuthUtils(){}
+  private AuthUtils() {
+
+  }
 
   /**
    * validate password length.
@@ -193,7 +195,9 @@ public class AuthUtils {
     }
     for (PathPrivilege pathPrivilege : privilegeList) {
       if (path != null) {
-        if (pathPrivilege.getPath() != null && AuthUtils.pathBelongsTo(path, pathPrivilege.getPath()) && pathPrivilege.getPrivileges().contains(privilegeId)) {
+        if (pathPrivilege.getPath() != null &&
+                AuthUtils.pathBelongsTo(path, pathPrivilege.getPath()) &&
+                pathPrivilege.getPrivileges().contains(privilegeId)) {
           return true;
         }
       } else {