Github user eminency commented on a diff in the pull request:
https://github.com/apache/tajo/pull/944#discussion_r56449935
--- Diff:
tajo-core-tests/src/test/java/org/apache/tajo/client/TestTajoClient.java ---
@@ -175,10 +176,8 @@ public final void testSessionVariables() throws
IOException, TajoException, Inte
String prefixName = "key_";
String prefixValue = "val_";
- List<String> unsetList = new ArrayList<>();
- for(Map.Entry<String, String> entry:
client.getAllSessionVariables().entrySet()) {
- unsetList.add(entry.getKey());
- }
+ List<String> unsetList =
client.getAllSessionVariables().entrySet().stream()
+ .map(Map.Entry<String, String>::getKey).collect(Collectors.toList());
--- End diff --
I think next one is more readable:
```java
List<String> unsetList = new
ArrayList<>(client.getAllSessionVariables().keySet());
```
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