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573 points huntaub | 1 comments | | HN request time: 0s | source

Hey HN, I’m Hunter the founder of Regatta Storage (https://regattastorage.com). Regatta Storage is a new cloud file system that provides unlimited pay-as-you-go capacity, local-like performance, and automatic synchronization to S3-compatible storage. For example, you can use Regatta to instantly access massive data sets in S3 with Spark, Pytorch, or pandas without paying for large, local disks or waiting for the data to download.

Check out an overview of how the service works here: https://www.youtube.com/watch?v=xh1q5p7E4JY, and you can try it for free at https://regattastorage.com after signing up for an account. We wanted to let you try it without an account, but we figured that “Hacker News shares a file system and S3 bucket” wouldn’t be the best experience for the community.

I built Regatta after spending nearly a decade building and operating at-scale cloud storage at places like Amazon’s Elastic File System (EFS) and Netflix. During my 8 years at EFS, I learned a lot about how teams thought about their storage usage. Users frequently told me that they loved how simple and scalable EFS was, and -- like S3 -- they didn’t have to guess how much capacity they needed up front.

When I got to Netflix, I was surprised that there wasn’t more usage of EFS. If you looked around, it seemed like a natural fit. Every application needed a POSIX file system. Lots of applications had unclear or spikey storage needs. Often, developers wanted their storage to last beyond the lifetime of an individual instance or container. In fact, if you looked across all Netflix applications, some ridiculous amount of money was being spent on empty storage space because each of these local drives had to be overprovisioned for potential usage.

However, in many cases, EFS wasn’t the perfect choice for these workloads. Moving workloads from local disks to NFS often encountered performance issues. Further, applications which treated their local disks as ephemeral would have to manually “clean up” left over data in a persistent storage system.

At this point, I realized that there was a missing solution in the cloud storage market which wasn’t being filled by either block or file storage, and I decided to build Regatta.

Regatta is a pay-as-you-go cloud file system that automatically expands with your application. Because it automatically synchronizes with S3 using native file formats, you can connect it to existing data sets and use recently written file data directly from S3. When data isn’t actively being used, it’s removed from the Regatta cache, so you only pay for the backing S3 storage. Finally, we’re developing a custom file protocol which allows us to achieve local-like performance for small-file workloads and Lustre-like scale-out performance for distributed data jobs.

Under the hood, customers mount a Regatta file system by connecting to our fleet of caching instances over NFSv3 (soon, our custom protocol). Our instances then connect to the customer’s S3 bucket on the backend, and provide sub-millisecond cached-read and write performance. This durable cache allows us to provide a strongly consistent, efficient view of the file system to all connected file clients. We can perform challenging operations (like directory renaming) quickly and durably, while they asynchronously propagate to the S3 bucket.

We’re excited to see users share our vision for Regatta. We have teams who are using us to build totally serverless Jupyter notebook servers for their AI researchers who prefer to upload and share data using the S3 web UI. We have teams who are using us as a distributed caching layer on top of S3 for low-latency access to common files. We have teams who are replacing their thin-provisioned Ceph boot volumes with Regatta for significant savings. We can’t wait to see what other things people will build and we hope you’ll give us a try at regattastorage.com.

We’d love to get any early feedback from the community, ideas for future direction, or experiences in this space. I’ll be in the comments for the next few hours to respond!

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Jayakumark ◴[] No.42174329[source]
How does this compare to https://github.com/awslabs/mountpoint-s3 ?
replies(1): >>42174379 #
huntaub ◴[] No.42174379[source]
Thanks for the question! Mountpoint for Amazon S3 is a FUSE layer that doesn't support full POSIX semantics. For example, you can't use Mountpoint for Amazon S3 for random writes to existing files, appends, or renames. This means that you have to carefully instrument your application to understand whether or not it's compatible with Mountpoint, which can be error-prone. Regatta, on the other hand, provides full POSIX compatibility for the file interface, which means that it works out-of-the-box with all file based applications.
replies(2): >>42174506 #>>42174554 #
memco ◴[] No.42174506[source]
Does Regatta require a local disk sized for the entire file to support random writes? One problem I’ve seen is that we have set up instances with a modest local disk but then work with files for which we need to pull the whole file into a local cache modify some parts and then push the full result back into s3. It would be helpful to have a way to work with s3 as though it were posix without having to match the local disk size to the largest file we might need to process.
replies(1): >>42174606 #
huntaub ◴[] No.42174606{3}[source]
This is exactly the problem that we solve! You don't need any local disk on your EC2 instance in order to use Regatta or work with data in S3. Our high-speed caching layer plays the role as this local disk for you, so that you can work with data sets that are hundreds of TiBs, even if you only have a 20 GiB EBS volume on your instance.
replies(1): >>42175000 #
Jayakumark ◴[] No.42175000{4}[source]
What is the acceptable latency , if we have to use this outside of Ec2 , lets say mounting S3 from on-prem/GCP/Azure ?
replies(1): >>42175691 #
1. huntaub ◴[] No.42175691{5}[source]
Well, in my opinion, I want to deliver the lowest latency possible. I expect that we will have Regatta running in GCP and Azure within the next 6 months. I'd love to connect if there's a place on-prem that you're looking to use Regatta. Would you shoot an email to hleath [at] regattastorage.com, and we could chat about what you're looking for?