Christian Kadner created TOREE-402:
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Summary: Installer should support parameterized kernel names
Key: TOREE-402
URL: https://issues.apache.org/jira/browse/TOREE-402
Project: TOREE
Issue Type: Wish
Components: Kernel
Affects Versions: 0.2.0
Reporter: Christian Kadner
Priority: Minor
For enterprise deployments of Apache Toree it would be nice to have more
flexibility when specifying kernel name(s) when installing multiple
interpreters at the same time.
Currently the Apache Toree installer allows to specify {{kernel_name}} and
{{interpreters}}, i.e. running {code}toree install --kernel_name='Spark 2.1'
--interpresters=Scala,PySpark,SparkR,SQL{code} would result in kernels with
these names:
{code}
Spark 2.1 - Scala
Spark 2.1 - PySpark
Spark 2.1 - SparkR
Spark 2.1 - SQL
{code}
For enterprise deployments that support other languages and Spark versions
however this naming scheme is not flexible enough. Suppose this is the desired
list of kernels (kernel display names):
{code}
Python 2.7 with Spark 1.6
Python 2.7 with Spark 2.0
Python 3.5 with Spark 1.6
Python 3.5 with Spark 2.0
R with Spark 1.6
R with Spark 2.0
Scala 2.10 with Spark 1.6
Scala 2.11 with Spark 2.0
{code}
In order to achieve the above names, one would have to write a custom script to
replace the {{display_name}} in the {{kernel.json}} files that get created by
the Toree installer.
It would be nice to enrich the Toree install options to allow for some kind of
pattern instead of a fixed string, i.e.:
{code}
jupyter install --kernel_name='{interpreter.name} {interpreter.version} with
Spark {spark.version}' ...
{code}
The install documentation might read:
{noformat}
--kernel_name=<Unicode> (ToreeInstall.kernel_name)
Examples: '{interpreter.name} {interpreter.version} with Spark
{spark.version}'
Default: 'Apache Toree - {interpreter.name}'
Install the kernel spec with this name. This is also used as the display
name for kernels in the Jupyter UI.
{noformat}
Of course the placeholders would then have to be replaced by the Toree install
code and actual list of available variables may be different from the above
suggestion.
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