[
https://issues.apache.org/jira/browse/IMPALA-15175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Quanlong Huang updated IMPALA-15175:
------------------------------------
Description:
AnalyticEvalNode is not cardinaliry-preserving since its output exprs, e.g.
rank(), can be used as downstream group-by/join keys or predicates which impact
the downstream cardinality.
We need its HBO key string to contain the analytic functions and the
corresponding partition-by/order-by/window clauses.
> HBO for computing AnalyticEvalNode cardinality
> ----------------------------------------------
>
> Key: IMPALA-15175
> URL: https://issues.apache.org/jira/browse/IMPALA-15175
> Project: IMPALA
> Issue Type: New Feature
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Major
>
> AnalyticEvalNode is not cardinaliry-preserving since its output exprs, e.g.
> rank(), can be used as downstream group-by/join keys or predicates which
> impact the downstream cardinality.
> We need its HBO key string to contain the analytic functions and the
> corresponding partition-by/order-by/window clauses.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
