GitHub user joehalliwell opened a pull request:
https://github.com/apache/spark/pull/11243
[SPARK-13242] [SQL] Fall back to interpreting complex `when` expressions
This follows @davies suggestion over on
https://github.com/apache/spark/pull/11221 but rather than hard coding a limit
on the number of branches, it does a heuristic check on the generated source
code size.
This isn't ideal, but will work well in practice and mirrors the approach
in https://github.com/apache/spark/pull/7076
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/joehalliwell/spark SPARK-13242-eval
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11243.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 #11243
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commit 5849e451974c9168ac558ff3024987065862c4ab
Author: Joe Halliwell <[email protected]>
Date: 2016-02-09T15:36:15Z
Add test case
commit 9b5736bbdd119d039d22eb0bf27d36812118f96c
Author: Joe Halliwell <[email protected]>
Date: 2016-02-17T22:07:06Z
Fall back to interpreting complex when expressions
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