[GitHub] [flink] zentol opened a new pull request #9506: [FLINK-13745][travis] Retain cache of most recent build

[GitBox <gi...@apache.org>]

zentol opened a new pull request #9506: [FLINK-13745][travis] Retain cache of most recent build
URL: https://github.com/apache/flink/pull/9506
 
 
   Whenever we run a Travis build we first delete the cached artifacts of previous builds. This must be done because there's no build-wide cleanup hook, and we can't have the cache grow indefinitely.
   
   However, this also means that if 2 builds are running at the same time, the latter may _at some point_ delete the cache of the first build, while the first one may still need it. Lately we've seen a few failures due to this.
   
   This PR is a compromise between timely cleanup and build stability, and relaxes the cleanup logic slightly so that the artifacts of the most recent build will not be deleted.

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