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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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Jaeseon
by • New Contributor II
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Failed to import `Ray` on jupyter notebook.

While working on my school's Linux server, I encountered an issue while attempting to install and import Ray in my Jupyter Notebook. I successfully installed the package ray==2.4.0, but encountered an error when trying to import it, specifically stat...

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Anonymous
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Hi @Jaeseon Song​ Great to meet you, and thanks for your question! Let's see if your peers in the community have an answer to your question. Thanks.

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Fed
by • New Contributor III
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Resolved! Ray dashboard no longer available

Has anyone else experienced the lack of access to the Ray dashboard since this week? Last week worked fine.rom ray.util.spark import setup_ray_cluster   setup_ray_cluster(...)This used to output an HTML block with a link to the dashboard.I can manual...

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Fed
New Contributor III
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The reason for the missing dashboard for me was due ​to not having installed some required dependencies. Shout out to the Ray community for their help.​I've submitted a PR (now merged) to add a warning message​ when such dependencies are missing.​​

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Fed
by • New Contributor III
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Resolved! Ray as a cluster library instead of notebook-scoped library

This article rightly suggests to install `ray` with `%pip`, although it fails to mention that installing it as a cluster library won't work.The reason, I think, is that `setup_ray_cluster` will use `sys.executable` (ie `/local_disk0/.ephemeral_nfs/en...

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Fed
New Contributor III
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Ugly, but this seems to work for nowimport sys import os import shutil from ray.util.spark import setup_ray_cluster, shutdown_ray_cluster   shutil.copy( "/local_disk0/.ephemeral_nfs/cluster_libraries/python/bin/ray", os.path.dirname(sys.execu...

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youssefmrini
by • Databricks Employee
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Resolved! Can I run Ray applications on Databricks ?

With Databricks Runtime 12.0 and above, you can create a Ray cluster and run Ray applications in Databricks with the Ray on Spark API.Ray is a unified framework for scaling AI and Python applications. Ray consists of a core distributed runtime and a ...

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Anonymous
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Hi @Youssef Mrini​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you.Than...

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Mooune_DBU
by • Valued Contributor
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Spark vs. Ray?

Ray has been getting a lot of traction lately for shining at distributed compute.What are the primary differences between Spark and Ray?In which areas/applications would each be best ? (i.e. Reinforcement Learning)In which cases would it make sense f...

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