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https://issues.apache.org/jira/browse/BEAM-4400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16523014#comment-16523014
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Udi Meiri commented on BEAM-4400:
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I've spent the better of a day looking at this. Results:
1. Ran this docker container locally:
https://hub.docker.com/r/gradle/build-cache-node/
2. Configured the Gradle for Beam to use said remote cache from step 1.
3. Ran ./gradlew --info :beam-java-core-something:test
Verified on the remote cache's status page that the cache was no longer empty.
4. Ran ./gradlew clean --quiet
5. Ran the command from step 3 again.
Expected: remote cache to speed up gradle build. Tests should not run again.
What I got: cache wasn't used, new entries written to cache (count of entries
went up). I saw tests being run.
I expected the cache to be used since the source hasn't changed
Perhaps the 'clean' task does more than I thought it does.
> Integrate Jenkins Job Cacher Plugin for improved build caching
> --------------------------------------------------------------
>
> Key: BEAM-4400
> URL: https://issues.apache.org/jira/browse/BEAM-4400
> Project: Beam
> Issue Type: Improvement
> Components: build-system
> Reporter: Scott Wegner
> Assignee: Udi Meiri
> Priority: Minor
>
> See discussion on
> [dev|https://lists.apache.org/thread.html/c59289787c665c7732df4095bda0877637eee59e3add4d26a11f6b7f@%3Cdev.beam.apache.org%3E].
> With the new Gradle build, we are now able to build incrementally, but are
> not yet taking advantage of it on Jenkins. This would give us the benefit of
> much faster pre-commits for files that aren't changed. For example, A change
> in the Python which doesn't touch any Java would not need to re-run Java
> pre-commits.
> By default, Gradle uses a build cache local to the workspace, and in Jenkins
> the workspace gets nuked on each build. There is a [Jenkins Job Cacher
> Plugin|https://wiki.jenkins.io/display/JENKINS/Job+Cacher+Plugin] which
> solves this exact plugin and integrates with Gradle's build cache support. I
> believe all we need to do is enable and configure this plugin to realize the
> benefits of incremental builds.
> To enable the plugin, we likely need to reach out the Apache INFRA team.
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