[jira] [Created] (TOREE-299) Create spark context lazily to avoid long startup times for the kernel

["Gino Bustelo (JIRA)" <ji...@apache.org>]

Gino Bustelo created TOREE-299:
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             Summary: Create spark context lazily to avoid long startup times for the kernel
                 Key: TOREE-299
                 URL: https://issues.apache.org/jira/browse/TOREE-299
             Project: TOREE
          Issue Type: Improvement
            Reporter: Gino Bustelo


Currently the options are to start or not start a kernel at startup time. The "not start" option leaves it all to the user.

I propose that when the kernel is managing the spark context, that is starts it lazily when the user first tries to get a hold of the reference.

I tried to do this as part of https://github.com/apache/incubator-toree/pull/15 but hit some roadblocks that I did not want to tackle as part of that PR.

Now that the `sc`is a `def` it can easily be made lazy.



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