diff --git a/src/main/java/com/loafle/overflow/crawler/result/OFResultSetCol.java b/src/main/java/com/loafle/overflow/crawler/result/OFResultSetCol.java
index f888ae9..12a5819 100644
--- a/src/main/java/com/loafle/overflow/crawler/result/OFResultSetCol.java
+++ b/src/main/java/com/loafle/overflow/crawler/result/OFResultSetCol.java
@@ -18,7 +18,7 @@ public class OFResultSetCol extends OFResultSet{
     public void setMeta() {
 
         List<Keys> meta = this.item.getKeys();
-        List<String> arrayColumns = (List<String>)this.item.getMappingInfo().getArrayColumns();
+        List<String> arrayColumns = this.item.getMappingInfo().getArrayColumns();
 
         if(this.meta == null) {
             this.meta = new HashMap<>();
@@ -41,8 +41,7 @@ public class OFResultSetCol extends OFResultSet{
     public Map<String, String> parse() {
 
         List<Keys> metrics = this.item.getKeys();
-        List<String> arrayColumns = (List<String>)this.item.getMappingInfo().getArrayColumns();
-//        this.meta
+        List<String> arrayColumns = this.item.getMappingInfo().getArrayColumns();
 
         Map<String, String> resultMap = new HashMap<>();