GitHub user RussellSpitzer opened a pull request:
https://github.com/apache/spark/pull/22576
[SPARK-25560][SQL] Allow FunctionInjection in SparkExtensions
This allows an implementer of Spark Session Extensions to utilize a
method "injectFunction" which will add a new function to the default
Spark Session Catalogue.
## What changes were proposed in this pull request?
Adds a new function to SparkSessionExtensions
def injectFunction(functionDescription: FunctionDescription)
Where function description is a new type
type FunctionDescription = (FunctionIdentifier, FunctionBuilder)
The functions are loaded in BaseSessionBuilder when the function registry
does not have a parent
function registry to get loaded from.
## How was this patch tested?
New unit tests are added for the extension in SparkSessionExtensionSuite
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/RussellSpitzer/spark SPARK-25560
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22576.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 #22576
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commit 5fdca38e21448ccf2f24a68fbadc221c87195581
Author: Russell Spitzer <russell.spitzer@...>
Date: 2018-09-28T01:58:21Z
[SPARK-25560][SQL] Allow FunctionInjection in SparkExtensions
This allows an implementer of Spark Session Extensions to utilize a
method "injectFunction" which will add a new function to the default
Spark Session Catalogue.
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