[CASSANDRA-16070] Add dtest option to keep ccm test directories for just failed tests

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-beta2, 4.0
• Component/s: Test/dtest/python
• Change Category: Quality Assurance
• Complexity: Normal
• Platform: All

Source Control Link

https://github.com/apache/cassandra-dtest/commit/cefddf845d63919c6e7b5efa35b28fe7a5ad1142 and https://github.com/apache/cassandra-builds/commit/3c91749e9f13b2b728b193197291a368dce6dc8a

Test and Documentation Plan

ci-cassandra.a.o
introduction to build-scripts/cassandra-dtest-pytest.sh

• Assignee: Michael Semb Wever
• Reporter: Michael Semb Wever

Authors

Michael Semb Wever

Reviewers

Brandon Williams, Michael Semb Wever

• Created: 24/Aug/20 07:22
• Updated: 03/Jan/21 17:03
• Resolved: 24/Aug/20 14:47

Description

DTests already have an option `--keep-test-dir` that keeps the ccm test directories. This is useful for debugging failures, especially those that can't be reproduced locally.

Introducing this option to ci-cassandra.a.o failed due to lack of disk space.

This patch introduces a new option `--keep-failed-test-dir` that keeps the ccm test directory only for dtests that fail.

This should suffice, if disk space is still a problem, a further option of `--keep-failed-test-log-dir` can be added that only keeps the logs inside the ccm test directory, as the majority of space taken up by these directories are the cassandra data directories.