Extraction Prerequisites

Before you perform Atlas metadata extraction, you must understand the prerequisites of this feature, that includes the types of extraction.

Determine the Type of Extraction

Choose Running Bulk Extraction if you need to get the complete snapshot of the storage account, container or specific path (configured at allow list in extractor configuration file) metadata at Atlas. Normally recommended for the very first time.

Choose Running Incremental Extraction if you need to keep Atlas synchronized with the changes happening in ADLS. This takes more time to process the individual changes compared to bulk extraction. It needs to be run periodically if lineage has to be kept up to date.

If incremental extractions need to be set up to run periodically, it can be done using your own scheduling tools or using corntabs. As you get familiar with the nature of changes within ADLS, viz. volume of changes and the speed of the extraction, you can determine the frequency with which to run the extractor.

For incremental extractions to function, you will need to set up Azure storage queues. Please see Configuring ADLS Gen2 Storage Queue for more details.