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https://issues.apache.org/jira/browse/TAJO-1026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyunsik Choi updated TAJO-1026:
-------------------------------
Component/s: tajo master
query master
> Implement Query history persistency manager.
> --------------------------------------------
>
> Key: TAJO-1026
> URL: https://issues.apache.org/jira/browse/TAJO-1026
> Project: Tajo
> Issue Type: New Feature
> Components: query master, tajo master
> Reporter: Hyoungjun Kim
> Assignee: Hyoungjun Kim
> Priority: Minor
> Fix For: 0.9.1
>
>
> Currently query history stored in the memory of TajoMaster or QueryMaster.
> Query detail information is disappeared when the cluster is restarted. And
> because of memory limitations, only a few hours or a few days histories are
> kept.
> I suggest the following features for the query history.
> - Worker saves a query task history to the HDFS after finishing a query.
> - QueryMaster saves a query history to the HDFS after finishing a query.
> - If query is finished, Information Web server in TajoMaster shows query
> history in the web page, If query is running TajoMaster forward to
> QueryMaster.
> - History data will be saved to HDFS with JSON format.
> - JSON format has history file version for backward compatibility.
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