Save file to /tmp

thiagoawstest
Contributor

‎07-10-2024 07:01 AM

Hello, I have python code that collects data in json, and sends it to an S3 bucket, everything works fine. But when there is a lot of data, it causes memory overflow.

So I want to save locally, for example in /tmp or dbfs:/tmp and after sending it to S3, but when saving it says that the directory or file does not exist, as if the file is generated but cannot be found.

If I mount UC Vulumes, then it works.

Are there any restrictions? I'm mounting everything via unity catalog, not via dbfs.

Thanks.

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RishabhTiwari07
Community Manager
Community Manager

‎07-18-2024 09:45 AM

Hi @thiagoawstest ,

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Rishabh

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JimBiard
New Contributor III

‎05-15-2025 07:10 PM

I am experiencing the same problem. I create a file in /tmp and can verify that it exists. But when an attempt is made to open the file using pyspark, the file is not found. I noticed that the path I used to create the file is /tmp/foobar.parquet and the path being reported as not found is dbfs:/tmp/foobar.parquet.

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JimBiard
New Contributor III
In response to JimBiard

‎05-16-2025 08:51 AM

I found what my problem was. I used pandas to save my parquet file to /tmp. It stored it in the compute node local file system /tmp folder. When I passed the same path to pyspark to load the file, it prepended 'dbfs:' to the path. The file wasn't in dbfs:/tmp, so the call failed. I prepended 'file:' to the path name that I passed to pyspark and the call succeeded.