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

["Michael Semb Wever (Jira)" <ji...@apache.org>]

Michael Semb Wever created CASSANDRA-16070:
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             Summary: Add dtest option to keep ccm test directories for just failed tests
                 Key: CASSANDRA-16070
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16070
             Project: Cassandra
          Issue Type: Improvement
          Components: Test/dtest
            Reporter: Michael Semb Wever


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|https://github.com/apache/cassandra-builds/commit/51eb85b57b62a542ca456e52a20bee06955f6ec1#diff-a885314255cf7d5c7c04889bf01aa2ab] this option to ci-cassandra.a.o [failed|https://github.com/apache/cassandra-builds/commit/d1600acde19cdbd906b0ff89318d3e8a3f400a70#diff-a885314255cf7d5c7c04889bf01aa2ab] due to lack of disk space.

This [patch|https://github.com/apache/cassandra-dtest/compare/master...thelastpickle:mck/keep_failed_test_dir] 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.



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