Andres de la Peña created CASSANDRA-18017:
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Summary: Jenkins: Consider using the no-build-test flag
Key: CASSANDRA-18017
URL: https://issues.apache.org/jira/browse/CASSANDRA-18017
Project: Cassandra
Issue Type: Task
Components: CI
Reporter: Andres de la Peña
CASSANDRA-16625 and CASSANDRA-18000 added a \{{-Dno-build-test=true}} flag to
skip the dependencies of the Ant test targets. This is useful to speed up the
test targets if the {{build-test}} target has already been previously run, for
example as part of {{{}ant jar{}}}.
That was created thinking mainly on CircleCI's multiplexer, where we run the
same test target repeatedly. Skipping the already run depended on targets can
significantly speed up the tests. The flag however is also useful for all other
test jobs because every parallel runner can skip the test building step, and we
have hundreds of parallel runners. Saving around 30s on every runner adds up
considerable savings.
Maybe this flag can also be used for skipping test builds on Jenkins too, so
each parallel test split can benefit from a slight boost. I'm not familiarized
with Jenkins config so I'm not sure whether it makes sense.
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