[
https://issues.apache.org/jira/browse/IMPALA-14597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Quanlong Huang updated IMPALA-14597:
------------------------------------
Priority: Critical (was: Major)
> HBO Prototype for HdfsScanNode cardinality
> ------------------------------------------
>
> Key: IMPALA-14597
> URL: https://issues.apache.org/jira/browse/IMPALA-14597
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend, Frontend
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Critical
>
> The prototype will extract ScanNode cardinalities in query profiles and store
> these historical stats in coordinator memory. Historical stats can be used in
> estimating cardinality of new queries.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
