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https://issues.apache.org/jira/browse/TAJO-1946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15006757#comment-15006757
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ASF GitHub Bot commented on TAJO-1946:
--------------------------------------
Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/839#discussion_r44934021
--- Diff:
tajo-plan/src/main/java/org/apache/tajo/plan/logical/DistinctGroupbyNode.java
---
@@ -56,21 +57,21 @@ public DistinctGroupbyNode(int pid) {
@Override
public boolean hasTargets() {
- return targets.length > 0;
+ return !targets.isEmpty();
--- End diff --
This code involves a potential NPE.
> Change Projectable::setTargets and getTargets to set and get List<Target>
> -------------------------------------------------------------------------
>
> Key: TAJO-1946
> URL: https://issues.apache.org/jira/browse/TAJO-1946
> Project: Tajo
> Issue Type: Sub-task
> Components: Planner/Optimizer
> Reporter: Hyunsik Choi
> Assignee: Dongkyu Hwangbo
> Priority: Minor
> Labels: newbie
>
> See TAJO-1938. It would simplify lots of codes for 'for-loop' on Targets if
> we change {{Projectable::setTargets}} and {{getTargets}} to set and get
> {{List<Target>}}.
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