[jira] [Created] (TAJO-1326) Remove legacy memory task histories

[Jinho Kim (JIRA)]

Jinho Kim created TAJO-1326:
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             Summary: Remove legacy memory task histories
                 Key: TAJO-1326
                 URL: https://issues.apache.org/jira/browse/TAJO-1326
             Project: Tajo
          Issue Type: Improvement
          Components: query master, worker
            Reporter: Jinho Kim


Query history persistency manager was added by TAJO-1026
So we should remove legacy codes in QueryMaster and Worker



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