GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/12040
[SPARK-14244][SQL][WIP] Don't use SizeBasedWindowFunction.n created on
executor side when evaluating window functions
## What changes were proposed in this pull request?
`SizeBasedWindowFunction.n` is a global singleton attribute created for
evaluating size based aggregate window functions like `CUME_DIST`. However,
this attribute gets different expression IDs when created on both driver side
and executor side. This PR stops using `SizeBasedWindowFunction.n` created on
executor side.
## How was this patch tested?
TBD. Testing this bugfix requires starting a multi-process cluster. Trying
to figure out a proper way to test it.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark
spark-14244-fix-sized-window-function
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12040.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 #12040
----
commit 65bc6ae8f614d67ec53e170d0f1ebf8b1a56516a
Author: Cheng Lian <[email protected]>
Date: 2016-03-29T16:49:44Z
Reuses driver side created SizeBasedWindowFunction.n
----
---
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]
