adding setters so that subclasses can set it

hoodie-client/src/main/java/com/uber/hoodie/WriteStatus.java

@@ -142,10 +142,18 @@ public class WriteStatus implements Serializable {
     return totalRecords;
   }
 
+  public void setTotalRecords(long totalRecords) {
+    this.totalRecords = totalRecords;
+  }
+
   public long getTotalErrorRecords() {
     return totalErrorRecords;
   }
 
+  public void setTotalErrorRecords(long totalErrorRecords) {
+    this.totalErrorRecords = totalErrorRecords;
+  }
+
   @Override
   public String toString() {
     final StringBuilder sb = new StringBuilder("WriteStatus {");