xyuanlu commented on code in PR #2291:
URL: https://github.com/apache/helix/pull/2291#discussion_r1055067788


##########
meta-client/src/main/java/org/apache/helix/metaclient/factories/MetaClientConfig.java:
##########
@@ -56,56 +69,82 @@ public StoreType getStoreType() {
   //  private RetryProtocol _retryProtocol;
 
 
-  private MetaClientConfig(String connectionAddress, long connectionTimeout, 
boolean enableAuth,
-      StoreType storeType) {
+  protected MetaClientConfig(String connectionAddress, long 
connectionInitTimeoutInMillis,
+      long sessionTimeoutInMillis, boolean enableAuth, StoreType storeType) {
     _connectionAddress = connectionAddress;
-    _connectionTimeout = connectionTimeout;
+    _connectionInitTimeoutInMillis = connectionInitTimeoutInMillis;
+    _sessionTimeoutInMillis = sessionTimeoutInMillis;
     _enableAuth = enableAuth;
     _storeType = storeType;
   }
 
-  public static class Builder {
-    private String _connectionAddress;
-
-    private long _connectionTimeout;
-    private boolean _enableAuth;
-    //private RetryProtocol _retryProtocol;
-    private StoreType _storeType;
+  public static class MetaClientConfigBuilder<B extends 
MetaClientConfigBuilder<B>> {
+    protected String _connectionAddress;
 
+    protected long _connectionInitTimeoutInMillis;
+    protected long _sessionTimeoutInMillis;
+    // protected long _operationRetryTimeout;
+    // protected RetryProtocol _retryProtocol;
+    protected boolean _enableAuth;
+    protected StoreType _storeType;
 
 
     public MetaClientConfig build() {
       validate();
-      return new MetaClientConfig(_connectionAddress, _connectionTimeout, 
_enableAuth, _storeType);
+      return new MetaClientConfig(_connectionAddress, 
_connectionInitTimeoutInMillis,
+          _sessionTimeoutInMillis,
+          _enableAuth, _storeType);
     }
 
-    public Builder() {
+    public MetaClientConfigBuilder() {
       // set default values
       setAuthEnabled(false);
-      setConnectionTimeout(-1);
+      
setConnectionInitTimeoutInMillis(MetaClientConstants.DEFAULT_CONNECTION_INIT_TIMEOUT_MS);
+      
setSessionTimeoutInMillis(MetaClientConstants.DEFAULT_SESSION_TIMEOUT_MS);
     }
 
-    public Builder setConnectionAddress(String connectionAddress) {
+    public B setConnectionAddress(String connectionAddress) {

Review Comment:
   B as in Builder



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