Efficiently move multiple files with dbutils.fs.mv command on abfs storage

Dean_Lovelace
New Contributor III

‎05-17-2023 01:36 AM

As part of my batch processing I archive a large number of small files received from the source system each day using the dbutils.fs.mv command.

This takes hours as dbutils.fs.mv moves the files one at a time.

How can I speed this up?

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daniel_sahal
Databricks MVP

‎05-17-2023 02:02 AM

@Dean Lovelace​ 

You can use multithreading.

See example here: https://nealanalytics.com/blog/databricks-spark-jobs-optimization-techniques-multi-threading/

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