Automate File Management in Databricks with dbutils.fs | Step-by-Step Tutorial
In this video, we'll explore dbutils.fs, the powerful Databricks utility for interacting with the Databricks File System (DBFS). Learn how to go beyond Spark APIs for file handling tasks, mastering dbutils.fs for efficient file listing, directory size calculation, automated cleanup, and data lake bookkeeping. This tutorial is perfect for Databricks users and data engineers who want to automate file management tasks and gain better control over their data lake.
Topics Covered:
What is dbutils.fs and why should I use it instead of Spark APIs for file handling?
How do I list files and directories in Databricks using `dbutils.fs.ls`?
How do I get file details (size, modification time) using `dbutils.fs` and the `FileInfo` object?
How do I calculate the total size of a folder in DBFS using Python and `dbutils.fs`?
How do I identify file types by extension (e.g., find all .txt files) using `dbutils.fs`?
How can I use dbutils to get the size of a data set?
How can I automate data lake bookkeeping tasks with `dbutils.fs` and Python?
How can I find and delete outdated files?
How can I identify files that are not compressed?
What is the Databricks File System?
Timestamps:
00:00 - Why Python with Spark for File Handling
00:38 - Intro: Databricks Utils (dbutils) for Non-Spark Tasks
01:11 - Exploring dbutils.fs for File System Operations
03:47 - Recap: %fs Magic Command vs dbutils.fs
06:14 - List Files in Databricks: dbutils.fs.ls Example
09:30 - Count Files using Python len() with dbutils Output
11:36 - Preview File Content: %fs head (Text Files)
15:10 - Understanding the FileInfo Object (File Metadata)
16:32 - Access File Attributes: .path, .name, .size
17:20 - Filter Files in Python: List Comprehension & startswith
20:13 - Python Loop: Iterate Folders & Files with dbutils.fs.ls
23:43 - Calculate Total Folder Size: Summing File Sizes with Python
24:58 - Convert Bytes to Megabytes (MB) in Python
29:33 - Create Reusable Python Function for Dataset Details (Size & Count)
31:23 - Common Bookkeeping Tasks with dbutils.fs
33:54 - Delete Files using dbutils.fs.rm (Mention)
35:08 - Summary: Using dbutils.fs for File Management in Databricks
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