[jira] [Updated] (FLINK-20416) Need a cached catalog for HiveCatalog

["Flink Jira Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-20416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flink Jira Bot updated FLINK-20416:
-----------------------------------
    Labels: auto-deprioritized-major auto-unassigned pull-request-available stale-minor  (was: auto-deprioritized-major auto-unassigned pull-request-available)

I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help the community manage its development. I see this issues has been marked as Minor but is unassigned and neither itself nor its Sub-Tasks have been updated for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is still Minor, please either assign yourself or give an update. Afterwards, please remove the label or in 7 days the issue will be deprioritized.


> Need a cached catalog for HiveCatalog
> -------------------------------------
>
>                 Key: FLINK-20416
>                 URL: https://issues.apache.org/jira/browse/FLINK-20416
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / Common, Connectors / Hive, Table SQL / Ecosystem
>            Reporter: Sebastian Liu
>            Priority: Minor
>              Labels: auto-deprioritized-major, auto-unassigned, pull-request-available, stale-minor
>         Attachments: hms cache.jpg, hms cache.jpg
>
>
> For OLAP scenarios, There are usually some analytical queries which running time is relatively short. These queries are also sensitive to latency. In the current Blink sql processing, parse/validate/optimize stages are all need meta data from catalog API. But each request to the catalog requires re-run of the underlying meta query. 
>  
> We may need a cached catalog which can cache the table schema and statistic info to avoid unnecessary repeated meta requests. 
> Design doc：[https://docs.google.com/document/d/1oL8HUpv2WaF6OkFvbH5iefXkOJB__Dal_bYsIZJA_Gk/edit?usp=sharing]
> I have submitted a related PR for adding a genetic cached catalog, which can delegate other implementations of {{AbstractCatalog. }}
> {{[https://github.com/apache/flink/pull/14260]}}



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