topic Re: How to handle java.io.Exception in python notebook in Data Engineering

How to handle java.io.Exception in python notebook

StuartParker188 — Wed, 05 Oct 2022 06:46:06 GMT

I'm attempting to mount a volume using dbutils.fs.mount in a python workbook

in the exception handling for this statement, I have found an exception that doesn't get caught using the standard try/except handling

for example, if passing through a container name that does not exist I get the following exception - but it is not caught

ExecutionError: An error occurred while calling o390.mount.

: java.io.FileNotFoundException: /: No such file or directory.

Is there an approach to catch a java.io.Exception within a python notebook?

Re: How to handle java.io.Exception in python notebook

Hubert-Dudek — Thu, 13 Oct 2022 15:29:30 GMT

If except Exception as error: is not working, you can check first if container name exists as resource

Re: How to handle java.io.Exception in python notebook

StuartParker188 — Fri, 14 Oct 2022 01:36:56 GMT

Hi @Debayan Mukherjee

The issue is not a file one. In the workbook that mounted the container, the container name was mis-typed. Despite the mount command being wrapped in a try..catch.. block, it was not caught and this error bubbled up and threw an exception that stopped the workbook.

My question relates to how to handle future events like this where standard pythonic exception handling doesn't work

Re: How to handle java.io.Exception in python notebook

StuartParker188 — Fri, 14 Oct 2022 01:38:39 GMT

Thanks - you are correct - however I am attempting to determine if it is possible to catch the Java error that is bubbling up within the pyspark environment

Re: How to handle java.io.Exception in python notebook

Anonymous — Sun, 13 Nov 2022 05:51:54 GMT

Hi @Stuart Parker

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.

Thanks!

Re: How to handle java.io.Exception in python notebook

Debayan — Thu, 06 Oct 2022 08:22:51 GMT

Hi @Stuart Parker , Could you please check in the Data/DBFS page if the file is there (or via dbutils.fs.ls, https://docs.databricks.com/dev-tools/databricks-utils.html)?