Jiri Daněk created DISPATCH-1739:
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Summary: Use GitHub Actions w/ sharding and bubblewrap for some
fast CI
Key: DISPATCH-1739
URL: https://issues.apache.org/jira/browse/DISPATCH-1739
Project: Qpid Dispatch
Issue Type: Improvement
Components: Tests
Affects Versions: 1.12.0
Reporter: Jiri Daněk
Assignee: Jiri Daněk
Fix For: 1.13.0
GitHub Actions is a task runner associated with a GitHub project. It is
conceptually similar to Travis, except that it has some extra features, and the
waits for computational resources are much shorter (currently).
Sharding is a technique to speed up the execution of tests. Instead of running
the tests on one machine one after another, copy the build directory over to
multiple machines, say two, and have the first execute the odd-numbered and the
second one the even-numbered tests. With luck (if copying the build directory
is relatively fast, and the tests all take approximately the same time), this
will cut the execution time in half.
Bubblewrap (https://github.com/containers/bubblewrap) is a sandboxing tool
available on Ubuntu and other systems. It is similar to systemd-nspawn except
it does not require sudo or user namespace support in the kernel. It is similar
to docker, except it does not use images, instead it selectively mounts
directories from the host. Bubblewrap can create an isolated network namespace,
which allows running multiple tests at the same time, each in its own
bubblewrap sandbox, and they don't clash on ports. With bubblewrap, running
{{ctest -j4}} is safe.
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