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From Donald Szeto <>
Subject Re: pio batchpredict fix & changes
Date Tue, 21 Nov 2017 19:28:40 GMT
Hi Mars,

Thanks for the PR! I am still reviewing the code change, but at the high
level it will take away the ability to run "batchpredict" remotely on a
Spark cluster + HDFS/S3 setup, and requires extra steps of downloading
input and uploading output files for such setup. It will unlikely scale to
much larger dataset.

That said, this is a very important and convenient feature. I'll help make
it as good as possible.


On Mon, Nov 20, 2017 at 10:21 AM, Mars Hall <>

> Hi PIO folks!
> Curious to hear from anyone using the new (as of PredictionIO 0.12.0)
> batch predict command.
>    - Do you use `pio batchpredict`?
>    - What is your use-case? (Which Engine template or algorithm?)
>    - Does it work for your use-case? (Details please)
> Batch predict is currently broken for engines using a custom
> PersistentModel. I've been working on a fix for this issue:
> Because that changeset alters the way the command works, I'd appreciate
> feedback on that pull request. *Especially if you use `pio batchpredict`
> today*, please try it out, and post feedback to that Github issue.
> Thanks for your attention 😄
> --
> *Mars Hall
> Customer Facing Architect
> Salesforce Platform / Heroku
> San Francisco, California

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