[
https://issues.apache.org/jira/browse/FLINK-39537?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Timo Walther closed FLINK-39537.
--------------------------------
Fix Version/s: 2.4.0
Resolution: Fixed
Fixed in master: 658e30a5484393e99fafded250dd3cd0eb900a85
> Apply conditional SET_SEMANTIC_TABLE trait to FROM_CHANGELOG
> ------------------------------------------------------------
>
> Key: FLINK-39537
> URL: https://issues.apache.org/jira/browse/FLINK-39537
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Reporter: Ramin Gharib
> Assignee: Ramin Gharib
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.4.0
>
>
> FROM_CHANGELOG used to be locked to row semantics. With the conditional trait
> API introduced for TO_CHANGELOG, the input argument now switches to set
> semantics when the call provides PARTITION BY:
>
> {code:java}
> SELECT * FROM FROM_CHANGELOG(
> input => TABLE cdc_stream PARTITION BY id
> ){code}
> The planner inserts an Exchange(hash[id]) so rows with the same key are
> co-located in the same parallel operator instance. Without PARTITION BY,
> behavior is unchanged: each row is processed independently with row
> semantics.
>
> The runtime function is unaffected — only the trait declaration and the
> resulting parallel execution layout change.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
