flink-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "godfrey he (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-12098) Add support for generating optimized logical plan for simple group aggregate on batch
Date Wed, 03 Apr 2019 12:21:01 GMT
godfrey he created FLINK-12098:
----------------------------------

             Summary: Add support for generating optimized logical plan for simple group aggregate
on batch
                 Key: FLINK-12098
                 URL: https://issues.apache.org/jira/browse/FLINK-12098
             Project: Flink
          Issue Type: New Feature
          Components: Table SQL / Planner
            Reporter: godfrey he
            Assignee: godfrey he


This issue only involves simple stream group aggregate, complex group aggregate(including
GROUP SETS and DISTINCT) will also be finished in new issue.

A logical aggregate will be converted to StreamExecGroupAggregate, and a StreamExecGroupAggregate
will be written to two-stage aggregates (StreamExecLocalGroupAggregate and StreamExecGlobalGroupAggregate)
if mini-batch is enabled and all aggregate functions are mergeable.

Retraction rules will also be ported, because multiple level aggregates will produce retraction
message.




--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message