Hi Zhong,

Thanks for sharing the problem.
I think that's related to the behavior (not releasing any resource) of
scala compiler embedded into SparkInterpreter.

For now, restart seems only practical solution.
Do you mind create an issue for it?

Thanks,
moon

On Wed, Feb 10, 2016 at 8:48 PM Zhong Wang <wangzhong....@gmail.com> wrote:

> Hi,
>
> I am working on building some responsive UI to visualize reports on top of
> Zeppelin. I found that running the same query using %spark sometimes is
> significantly slower than using %sql.
>
> For the query I am running, I can get result within 1 sec using %sql, but
> sometimes using more than 2 secs to get result using %spark. %spark is also
> very responsive after a clean restart, but become slower after it runs for
> a while, but %sql is still fast.
>
> Does anyone have the same issue? What is the difference between running
> using %spark and running using %sql?
>
> Thanks!
>
> Zhong
>

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