[
https://issues.apache.org/jira/browse/ASTERIXDB-1359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15204746#comment-15204746
]
Taewoo Kim commented on ASTERIXDB-1359:
---------------------------------------
I think it is required sometimes. For example, in my index-only plan branch,
before applying UNION, I need to unify the schema from the both side in the
plan. Without adding a manual project, it's impossible to unify the two
different schema.
> IntroduceProjectsRule should be the *only rule that adds projects to the
> pipeline
> ---------------------------------------------------------------------------------
>
> Key: ASTERIXDB-1359
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-1359
> Project: Apache AsterixDB
> Issue Type: Improvement
> Reporter: Steven Jacobs
> Assignee: Steven Jacobs
>
> We have a rule, IntroduceProjectsRule, which does full analysis of the
> pipeline to determine where projects should be added. It seems that with such
> a rule in place, other places shouldn't need to insert any projects (One
> clear example is IntroduceSecondary....Rule). It would be useful to examine
> where projects are being inserted and whether they actually need to be.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
