[
https://issues.apache.org/jira/browse/CALCITE-3972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17100394#comment-17100394
]
Chunwei Lei edited comment on CALCITE-3972 at 5/6/20, 5:19 AM:
---------------------------------------------------------------
Add the PR link:
[https://github.com/apache/calcite/pull/1884|https://github.com/apache/calcite/pull/1884.]
was (Author: chunwei lei):
Add the PR link: [https://github.com/apache/calcite/pull/1884.]
> Allow RelBuilder to create RelNode with convention and use it for trait
> convert
> -------------------------------------------------------------------------------
>
> Key: CALCITE-3972
> URL: https://issues.apache.org/jira/browse/CALCITE-3972
> Project: Calcite
> Issue Type: Bug
> Reporter: Xiening Dai
> Assignee: Xiening Dai
> Priority: Major
> Fix For: 1.23.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> 1. Provide Convention.transformRelBuilder() to transform an existing
> RelBuilder into one with specific convention.
> 2. RelBuilder provides withRelFactories() method to allow caller swap the
> underlying RelFactories and create a new builder.
> 3. Use the new interface in RelCollationTraitDef for converting into
> RelCollation traits
> We can avoid ~1/3 of total rule firings in a N way join case with this change.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
