[jira] [Created] (TAJO-528) Fix warnings generated by FindBugs

[Jinho Kim (JIRA)]

Jinho Kim created TAJO-528:
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             Summary: Fix warnings generated by FindBugs
                 Key: TAJO-528
                 URL: https://issues.apache.org/jira/browse/TAJO-528
             Project: Tajo
          Issue Type: Task
          Components: build
            Reporter: Jinho Kim


There are many findbugs errors reporting by TajoQA.
We should refactor code continuously.



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