Project was fun to make, but Amazon recently announced a much better way to accomplish this. Please use S3 batch jobs to copy items from bucket to another.
S3-71 is a lambda based solution for copying objects from one S3 Bucket to another.
The project utilizes Lambda functions to run hundreds of parallel copying jobs, achieving high speeds.
S3-71 uses 2 lambda functions and 2 corresponding SQS queues to:
- List the objects in the S3 Bucket
- Copy the objects one-by-one from the source to destination buckets
It achieves its speed by doing both task simultaneously and in large parallel proceseses. Capable of ~500 copying processes at once. SQS queues are used to ensure the speeds are achieved via gradual ramp up, and to catch exceptions via a Dead-Letter-Que.
Pre-requisites: Serverless Framework, Python 3.7 (may work with 3.6)
(venv) $ python3 copy_bucket.py -s source_buckey -d destination_bucket
- Only keys beginning with the 100 ascii-printable characters will be processed. All other keys will be ignored.
- Any object whose key contains characters that are not from the list below will fail (sqs limit):
- #x9, #xA, #xD
- #x20 to #xD7FF
- #xE000 to #xFFFD
- #x10000 to #x10FFFF
- Support the copying of keys beginning with non-ascii printable characters
- Output full list of objects -- somewhere
I usually name my serverless project after radioactive elements, but I made an exception for this.
S3-71 is a homage to the SR-71, more commonly known as the Blackbird, the fastest plane ever built.
Total time to move 1 million files between 2 buckets in a single region is ~8 minutes.
Total time to move 1 million files between 2 buckets across regions(us-west-1 to us-east-2) is ~25 minutes
Your mileage will vary depending on latency between regions, size of your files, the per_lambda setting etc.