GitHub user marmbrus opened a pull request:
https://github.com/apache/spark/pull/2525
[SPARK-3680][SQL] Fix bug caused by eager typing of HiveGenericUDFs
Typing of UDFs should be lazy as it is often not valid to call `dataType`
on an expression until after all of its children are `resolved`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/marmbrus/spark concatBug
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2525.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 #2525
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commit 5b8efe7f6a33c196620a2b932651e0354a5aee1c
Author: Michael Armbrust <[email protected]>
Date: 2014-09-24T18:52:21Z
fix bug with eager typing of udfs
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