Jaehwa Jung created TAJO-1014:
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Summary: Implement query history server.
Key: TAJO-1014
URL: https://issues.apache.org/jira/browse/TAJO-1014
Project: Tajo
Issue Type: Sub-task
Components: tajo master
Reporter: Jaehwa Jung
Currently, TajoMaster maintains its query history in memory. In the result, if
you shut down the master, you never can find your query history. In addition,
if you shut down the active master on HA mode, you never can find the history
on the backup master. Because the backup master can't access the active master
query history. Thus we need to implement query history server which maintains
its contents on shared storage like HDFS.
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