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  1. Tajo
  2. TAJO-1026

Implement Query history persistency manager.

    Details

    • Type: New Feature
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.10.0
    • Component/s: QueryMaster, TajoMaster
    • Labels:
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      Description

      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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              • Assignee:
                hjkim Hyoungjun Kim
                Reporter:
                hjkim Hyoungjun Kim
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                • Created:
                  Updated:
                  Resolved: