GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/8231
[SPARK-10034][SQL] Can't analyze Sort on Aggregate with aggregation
expression named "_aggOrdering"
The reason of this bug is that: The aggregate expression in `SortOrder`
never get resolved, we alias it and call `toAttribute` which gives us an
`UnresolvedAttribute`. So actually we are referencing aggregate expression by
name, not by exprId like we thought.
One solution is resolving the aggregate expression in `SortOrder`, which
maybe tricky to implement, so I choose to make the aliasing name unique instead.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark sort-agg
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8231.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #8231
----
commit c660a7be09db18ec1e44df0c62e8c7c538990faa
Author: Wenchen Fan <[email protected]>
Date: 2015-08-16T14:31:06Z
make the aggregation expression name unique in Sort
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
