GitHub user MaxGekk opened a pull request:
https://github.com/apache/spark/pull/21228
[SPARK-24171] Adding a note for non-deterministic functions
## What changes were proposed in this pull request?
I propose to add a clear statement for functions like `collect_list()`
about non-deterministic behavior of such functions. The behavior must be taken
into account by user while creating and running queries.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/MaxGekk/spark-1 deterministic-comments
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21228.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 #21228
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commit c1e5ade5cd0401519bb7b798741a66e88fd8504a
Author: Maxim Gekk <maxim.gekk@...>
Date: 2018-05-03T11:24:34Z
Adding a note for non-deterministic functions
commit 077da4ecf12fe6b3375ed52e5cf4743ca942a3c6
Author: Maxim Gekk <maxim.gekk@...>
Date: 2018-05-03T11:47:13Z
Updating comments for PySpark
commit 1761ed9cc189e3a4593090b5eaa488312f8e76b2
Author: Maxim Gekk <maxim.gekk@...>
Date: 2018-05-03T11:52:43Z
Updating comments for R
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