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What is Databricks Auto Loader, and how does it handle new files?

Spark/Big Dataeasy0.4 min readPremium
Frequency
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Asked at 1 company
Category
452
questions in Spark/Big Data
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88E|81M|283H
in this category
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1,863
across 7 categories
Asked at these companies
TCS
Expert AnswerPremium
84 wordsInterview-ready
**Auto Loader**: Incremental file ingestion from cloud storage. Detects new files; processes only new; checkpoint for exactly-once. **How**: (1) Directory listing or cloud notifications (S3 Events, etc.) to detect new files. (2) Checkpoint tracks processed files. (3) Schema evolution optional. (4) Trigger: once, availableNow, or continuous. **Why vs. Batch Read**: Batch rereads all; Auto Loader incremental....
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