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https://issues.apache.org/jira/browse/FLINK-38052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18007364#comment-18007364
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dalongliu edited comment on FLINK-38052 at 7/16/25 1:55 AM:
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[~kartikeypant] Can you help complete it by the end of this week? Otherwise, it
will affect the Flink 2.1 release. Very thanks.
was (Author: lsy):
[~kartikeypant] Can you help complete it this week?
> Release Testing: Verify FLIP-516: New Streaming Multi-Way Join Operator
> -----------------------------------------------------------------------
>
> Key: FLINK-38052
> URL: https://issues.apache.org/jira/browse/FLINK-38052
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Affects Versions: 2.1.0
> Reporter: dalongliu
> Assignee: Kartikey Pant
> Priority: Blocker
> Labels: release-testing
> Fix For: 2.1.0
>
>
> This issue aims to verify FLIP-516.
> We now support a StreamingMultiJoinOperator that performs a join across N
> tables without intermediate state. We've done some testing and observed
> considerable performance and state improvements for multiple chained joins
> when they record amplification.
>
> Now we'd like to have some cross team testing to validate it. We want to
> cover the following cases
> * Test 1: Enable multi joins, confirm 2/3 way inner joins are supported and
> produce correct results. Materialized results should be the same as binary
> joins.
> * Test 2: Enable multi joins, confirm 2/3 way left joins are supported and
> produce correct results. Materialized results should be the same as binary
> joins.
> * Test 3: Enable 5, 10, 20, x-way joins with/without primary keys and
> confirm output plans look good with `explain`.
> * Test 4: Enable 5, 10, 20, x-way joins with/without primary keys and
> confirm they run as expected - checking results' correctness here is usually
> complicated and not strictly required.
>
> Multi joins can be enabled with ??SET 'table.optimizer.multi-join.enabled' =
> 'true';.?? Currently, we have streaming mode support for inner and left joins.
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