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