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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TAJO-250) QueryMaster must send the query finish heartbeat.
Date Sun, 13 Oct 2013 14:22:44 GMT
Hyunsik Choi created TAJO-250:
---------------------------------

             Summary: QueryMaster must send the query finish heartbeat.
                 Key: TAJO-250
                 URL: https://issues.apache.org/jira/browse/TAJO-250
             Project: Tajo
          Issue Type: Bug
          Components: master, web UI
            Reporter: Hyunsik Choi
            Assignee: Hyunsik Choi
             Fix For: 0.2-incubating


In the current implementation, QueryMaster only depends on its heartbeat thread for all kinds
of reports. When a query master task without any succeeded report is moved to the finished
list, the finish report may be omitted. As a result, QueryJobManager occasionally does not
update the finish state (e.g., finish time and query state) for some queries even though the
queries are already finished. This patch fixes this bug.



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