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Posted to issues@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2014/12/02 10:47:12 UTC

[jira] [Created] (TAJO-1221) HA TajoClient should not connect TajoMaster at the first.

Hyunsik Choi created TAJO-1221:
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             Summary: HA TajoClient should not connect TajoMaster at the first.
                 Key: TAJO-1221
                 URL: https://issues.apache.org/jira/browse/TAJO-1221
             Project: Tajo
          Issue Type: Improvement
          Components: tajo master
            Reporter: Hyunsik Choi
             Fix For: 0.9.1


*Problem*

We TajoClient is opened, TajoClient initially tries to connect TajoMaster. This manner does not guarantee high availability. A known TajoMaster host may be not work anymore. So, this manner still has some failure point.

Also, this manner prohibits a Tajo cluster to run on some dynamic cluster environments like Yarn.

*Solution*

Tajo HA client should get directly TajoMaster addresses and others from HA component without contacting TajoMaster.



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