weibozhao commented on code in PR #83:
URL: https://github.com/apache/flink-ml/pull/83#discussion_r847916030


##########
flink-ml-lib/src/main/java/org/apache/flink/ml/classification/logisticregression/LinearModelData.java:
##########
@@ -37,60 +38,68 @@
 import java.io.OutputStream;
 
 /**
- * Model data of {@link LogisticRegressionModel}.
+ * Model data of {@link LogisticRegressionModel}, {@link FtrlModel}.
  *
  * <p>This class also provides methods to convert model data from Table to 
Datastream, and classes
  * to save/load model data.
  */
-public class LogisticRegressionModelData {
+public class LinearModelData {
 
     public DenseVector coefficient;
+    public long modelVersion;

Review Comment:
   We need  talk about it.



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