Hyunsik Choi created TAJO-1135:
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Summary: Implement queryable virtual table for cluster information
Key: TAJO-1135
URL: https://issues.apache.org/jira/browse/TAJO-1135
Project: Tajo
Issue Type: New Feature
Components: tajo master
Reporter: Hyunsik Choi
Currently, Tajo does not provide queryable cluster information. We just can
display cluster nodes through 'bin/tajo cluster' inline command.
I propose that TajoMaster should maintain a queryable virtual table where each
row represents each cluster node and columns should contain hostname, resource,
last ping, and so on. The virtual table should be processed by API and SQL.
Users can discovery cluster information in ad-hoc manner. Also, internal Tajo
system can make good use of the virtual table for scheduling resources or
displaying cluster information in WEB UI. I also expect that this feature also
simplify the many parts related to cluster information.
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