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openstack
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Update git submodules 

* Update tempest from branch 'master'
  to 37de2dce1c562a54bfda442a102bc69a7336b249
  - Merge "Introduce @serial test execution decorator"
  - Introduce @serial test execution decorator
    
    Tempest provides a LockFixture to avoid two potentially interfering
    tests to run in parallel. However, this solution does not scale when
    we want to separate a set of tests from many other test cases. For
    example, host aggregate and availability zone testing needs compute
    hosts without any nova servers to be able to test moving computes
    between aggregates but a lot of other tests are creating nova
    servers. To fully separate these aggregate tests from the rest of
    the tempest test cases, this patch proposes a @serial class decorator
    to mark a test class to be run totally independently of any other test
    classes.
    
    Under the hood, the @serial decorator is implemented with a tempest-wide
    interprocess read-write lock. The serial test classes always take the
    write lock, while the non-serial classes take the read lock. The lock
    allows in many readers OR a single writer. So the serial tests are run
    independently from the rest.
    
    To minimize the time a serial test blocks other tempest tests run in
    parallel, this patch also introduced a serial_tests test directory to
    store the serial tests. The current test ordering in a fresh env
    uses alphabetical order so the serial tests will run at the end of
    the execution not randomly in the middle. The gate uses fresh VMs
    for every run so we can rely on this optimization there. In local
    envs where tests are re-run, the subsequent runs will be ordered at
    runtime by stestr. Therfore, a longer runtime might be observed due to
    locking, but the correctness of the test execution is still kept.
    
    Related-Bug: #821732
    Change-Id: I0181517edab75f586464a38c4811417f888783b1
This commit is contained in:
Zuul 2023-01-23 18:31:15 +00:00 committed by Gerrit Code Review
parent 599aeeaa11
commit 49da9ae06d
1 changed files with 1 additions and 1 deletions
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tempest

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Subproject commit a6b7e334cf27eddacb9ec28fb728dbfa30e4a8c6
Subproject commit 37de2dce1c562a54bfda442a102bc69a7336b249