arina-ielchiieva commented on a change in pull request #1843: DRILL-7350: Move 
RowSet related classes from test folder
URL: https://github.com/apache/drill/pull/1843#discussion_r314323421
 
 

 ##########
 File path: 
exec/java-exec/src/main/java/org/apache/drill/exec/physical/rowSet/DirectRowSet.java
 ##########
 @@ -132,7 +131,7 @@ public RowSetReader reader() {
 
   @Override
   public SingleRowSet toIndirect() {
-    return new IndirectRowSet(this, Sets.<Integer>newHashSet());
+    return new IndirectRowSet(this, new HashSet<>());
 
 Review comment:
   Should be immutable?

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