zoercai commented on pull request #17063:
URL: https://github.com/apache/beam/pull/17063#issuecomment-1073802373
> I was able, unfortunately, to make these tests flake after 5 tries, and
then again after 19 tries.
>
> I added these three lines to
`sdks/java/io/google-cloud-platform/build.gradle`:
>
> ```
> test {
> outputs.upToDateWhen { false }
> }
> ```
>
> The purpose of these three lines is to avoid 'caching' test results, and
making sure that the tests will run every time even if the code did not change
(but artifacts won't be rebuilt).
>
> Then I used these commands:
>
> ```
> declare -i ITERATIONS=0
>
> while ./gradlew :sdks:java:io:google-cloud-platform:test
--tests=*SpannerChangeStreamErrorTest*;
> do
> ITERATIONS=$ITERATIONS+1;
> if [[ "$ITERATIONS" -eq 100 ]]; then break; fi;
> done
> ```
>
> The iterations stopped after `5` and `19` runs. So I think flakiness in
the tests is still high, unfortunately : /
Thanks @pabloem! I used this to run the tests locally and fix the test that
was failing. I ran this a few hundred times locally. Hopefully it's finally
stable!
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