[jira] [Commented] (FLINK-13730) Cache and share the downloaded external distribution (e.g. Kafka) in E2E tests

["Till Rohrmann (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-13730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907952#comment-16907952 ] 

Till Rohrmann commented on FLINK-13730:
---------------------------------------

Just for clarification, [~jark] you propose to add the caching mechanism to the existing bash end-to-end tests or to use Chesnay's PR for future end-to-end tests which would then benefit from the caching mechanism. The latter would, however, not solve the problem for the existing end-to-end tests.

> Cache and share the downloaded external distribution (e.g. Kafka) in E2E tests
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-13730
>                 URL: https://issues.apache.org/jira/browse/FLINK-13730
>             Project: Flink
>          Issue Type: Improvement
>          Components: Connectors / Kafka, Tests
>            Reporter: Jark Wu
>            Priority: Major
>
> We can try to cache and share the downloaded Kafka distribution among multiple e2e test runs.
> There is a PR by Chesnay Schepler (https://github.com/apache/flink/pull/7605) which conceptually does it. 
> This will help to reduce a lot of e2e testing time. And it would be very help for Chinese developers to verify e2e locally, because it's very unstable and almost impossible to download them in China.
> We can do the same thing for other external distributions, for example, elasticsearch.



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