Arvados

Crunch v2 runs "containers" not jobs

Container can expose ports and act as a service

Crunch v1 runs shim API server which translates to crunch v2

Can have container requests that can only be fulfilled by container that is running

Set of containers that are marked as "running" is the process list of the cluster.

• Crunch1-in-Crunch2
• Crunch2 migration

Still hoping to rename "Job" to "Container" in Crunch2, but this is not yet reflected in the wiki pages.

Apart from renaming the API/schema, features to support service-like containers (like exposed/discoverable TCP ports and restart-on-exit) can be added later without breaking anything, and are deferred for now.