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https://issues.apache.org/jira/browse/FLINK-12513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-12513:
-----------------------------------
Labels: pull-request-available (was: )
> Improve end-to-end (bash based) tests
> -------------------------------------
>
> Key: FLINK-12513
> URL: https://issues.apache.org/jira/browse/FLINK-12513
> Project: Flink
> Issue Type: Improvement
> Components: Tests
> Reporter: Alex
> Assignee: Alex
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.9.0
>
>
> Tests in {{flink-end-to-end-tests/test-scripts}} directory are re-using the
> same Flink directory to configure and launch a Flink cluster for a test.
> As part of their setup steps, they may modify Flink config files (application
> config, logs config), the directory itself (e.g. by copying some jars into
> {{lib}} folder). Also, some tests involve using additional services (like
> spinning up Zookeper, Kafka and so on clusters).
> The corresponding clean up code (to stop services, to revert Flink directory
> to original state) is spread out and a little bit not well-structured. In
> particular
> * the test runner itself reverts the Flink config (but doesn't revert other
> changes in Flink dir);
> * some tests use shell's {{trap}} on exit hook for clean up callback. Adding
> multiple of such callbacks in one test would result in non-proper test tear
> down.
> As the result, some tests may have left overs that may affect execution of
> next steps.
> The proposal is to introduce a helper method for using one global (per test
> run) {{trap}} hook that would enable adding multiple clean up callbacks. This
> should enable registering "resource" clean up callbacks in the same place
> where resource is used/launched.
> Optional improvement: make the test runner create a temporal copy of Flink
> directory and launch test using that temporal directory. After the test is
> done, the temporal directory would be removed.
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