ASF Utilization of bignbit: Questions

[mattp0]

First thank you for sharing this tool!

ASF would like to investigate using bignbit in our cumulus workflows for NISAR mission and even the OPERA mission. We have a couple requests and questions that I wanted to document here and if these are better suited else where please let me know!

Questions:

1. How is this configured? What is an example BIG config?
2. I see a conda env file but are you guys managing a lambda layer for GDAL? ASF started one recently https://github.com/asfadmin/python-gdal-lambda-layer
3. Is this deployed via an existing Terraform module?
4. What is the MGRs Grid and is this specific to a single dataset? We are working on SAR products with OPERA and we are not aware of this grid? Is this just a way to break the images up for GITC?
5. What is the harmony API used for?
6. Do you start this workflow by a CNM-S or a CMA Granule object?

Requests:

A workflow diagram that describes all the steps
It would also be useful to see the an example workflow.json if you are deploying this via terraform and cumulus module.

[frankinspace]

That GDAL lambda layer is awesome. We were actually building a full lambda container image with GDAL installed in order to get it working but the lambda layer seems like a better approach. I'll be working on this repo a bit over the next couple weeks so I should be able to address your questions soon.