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https://issues.apache.org/jira/browse/CALCITE-606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14388077#comment-14388077
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Julian Hyde commented on CALCITE-606:
-------------------------------------
[~amansinha100], you might be right that it doesn't fix distribution trait
propagation. Maybe the case you cite can be handled using RelMdPredicates
(predicate inference) - if you are distributed on x and a predicate tells you
that x = y then you are also distributed on y.
There is more work to be done, but as I discussed in CALCITE-628, I think my
fix is sound and we should commit it.
> Fix Trait Propagation and add test case
> ---------------------------------------
>
> Key: CALCITE-606
> URL: https://issues.apache.org/jira/browse/CALCITE-606
> Project: Calcite
> Issue Type: Bug
> Reporter: Jacques Nadeau
> Assignee: Jacques Nadeau
> Fix For: next
>
>
> Per my email to the dev list, it seems like we need to have a Trait
> propagation test case. Some things also seem broken. Dev list email:
> http://mail-archives.apache.org/mod_mbox/incubator-calcite-dev/201503.mbox/browser
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