GitHub user c-horn opened a pull request:
https://github.com/apache/spark/pull/21752
Spark 24788
## What changes were proposed in this pull request?
https://issues.apache.org/jira/browse/SPARK-24788
Add a special case for unresolved expressions when constructing toString
for `RelationalGroupedDataset`.
## How was this patch tested?
Unit test provided.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/c-horn/spark SPARK-24788
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21752.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 #21752
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commit 8f8e61a680a577e89628fc272eb93c4ef344937e
Author: Chris Horn <chorn4033@...>
Date: 2018-07-11T21:25:26Z
SPARK-24788 failing test case
commit ce4877cab75cb258929985c964f01ca7ff37f1c9
Author: Chris Horn <chorn4033@...>
Date: 2018-07-11T21:25:54Z
SPARK-24788 fixed UnresolvedException when toString an unresolved grouping
expression
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