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Handling files used more than once in a streaming pipeline

rt-slowth
Contributor

I am implementing Structured Streaming using Delta Live Table. I want to delete the parquet files once they are used. What options should I set so that the files loaded in S3 are not deleted?

1 REPLY 1

brockb
Databricks Employee
Databricks Employee

Hi,

It sounds like your Structured Streaming source is S3, in which case the easiest solution is likely to manage the stream source using an S3 Lifecycle Configuration (https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-lifecycle-mgmt.html). The objects could be managed by S3 Lifecycle via time-based trigger (e.g. 14 days) or it could  be more granularly managed using tags such that after a file is processed, you call the AWS SDK, tag an object with a key/value pair such as `delete=true` and then the lifecycle cleans up objects with those tags.

Thanks.

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