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https://issues.apache.org/jira/browse/FLINK-8819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16387522#comment-16387522
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Stephan Ewen commented on FLINK-8819:
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I agree, already helps.

Does the "compile" stage also cover checkstyle?

> Rework travis script to use build stages
> ----------------------------------------
>
>                 Key: FLINK-8819
>                 URL: https://issues.apache.org/jira/browse/FLINK-8819
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Build System, Travis
>            Reporter: Chesnay Schepler
>            Assignee: Chesnay Schepler
>            Priority: Trivial
>
> This issue is for tracking efforts to rework our Travis scripts to use 
> [stages|https://docs.travis-ci.com/user/build-stages/].
> This feature allows us to define a sequence of jobs that are run one after 
> another. This implies that we can define dependencies between jobs, in 
> contrast to our existing jobs that have to be self-contained.
> As an example, we could have a compile stage, and a test stage with multiple 
> jobs.
> The main benefit here is that we no longer have to compile modules multiple 
> times, which would reduce our build times.
> The major issue here however is that there is no _proper_ support for passing 
> build-artifacts from one stage to the next. According to this 
> [issue|https://github.com/travis-ci/beta-features/issues/28] it is on their 
> to-do-list however.
> In the mean-time we could manually transfer the artifacts between stages by 
> either using the Travis cache or some other external storage. The cache 
> solution would work by setting up a cached directory (just like the mvn 
> cache) and creating build-scope directories within containing the artifacts 
> (I have a prototype that works like this).
> The major concern here is that of cleaning up the cache/storage.
>  We can clean things up if
>  * our script fails
>  * the last stage succeeds.
> We can *not* clean things up if
>  * the build is canceled
>  * travis fails the build due to a timeout or similar
> as apparently there is [no way to run a script at the end of a 
> build|https://github.com/travis-ci/travis-ci/issues/4221].
> Thus we would either have to periodically clear the cache, or encode more 
> information into the cached files that would allow _other_ builds to clean up 
> stale date. (For example the build number or date).



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