[NO-TICKET] Fix flaky profiler spec by adjusting wait condition #4072
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**What does this PR do?** This PR fixes a profiler flaky spec from https://app.circleci.com/pipelines/github/DataDog/dd-trace-rb/17279/workflows/bafa8b55-7fee-414f-8875-c7a8ef8b56dd/jobs/615562 : ``` 1) Datadog::Profiling::Collectors::CpuAndWallTimeWorker#start Process::Waiter crash regression tests can sample an instance of Process::Waiter without crashing Failure/Error: expect(sample.locations.first.path).to eq "In native code" NoMethodError: undefined method `locations' for nil ``` The fix in this case is to make sure that we keep running the profiler until we observe a sample for the thread we expect, not just for any thread. **Motivation:** We aim to always have zero flaky specs in the profiler. **Additional Notes:** If for some reason we're not able to sample the target thread, the test will still correctly fail (with the `try_wait_until` failing). Fixes DataDog/ruby-guild#182 **How to test the change?** Validate that CI is still green :)
ivoanjo
added
profiling
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #4072 +/- ##
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- Coverage 97.72% 97.72% -0.01%
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Files 1338 1338
Lines 80248 80248
Branches 4016 4016
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- Hits 78426 78421 -5
- Misses 1822 1827 +5 ☔ View full report in Codecov by Sentry. |
BenchmarksBenchmark execution time: 2024-11-06 09:01:57 Comparing candidate commit 5d0390d in PR branch Found 0 performance improvements and 1 performance regressions! Performance is the same for 28 metrics, 2 unstable metrics. scenario:profiler - stack collector
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anmarchenko
approved these changes
Nov 6, 2024
AlexJF
approved these changes
Nov 6, 2024
ivoanjo
added a commit
that referenced
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Nov 6, 2024
**What does this PR do?** This PR relaxes the GitHub `CODEOWNERS` file rules for things related to profiling. Specifically, it adds `@DataDog/ruby-guild` as a second owner on top of just `@DataDog/profiling-rb`. **Motivation:** Now that we've enableed the "Require review from Code Owners" feature on GitHub, since there's not a lot of us working on profiling, it hasn't worked very well. Specifically, for very small PRs (#4072 is a good example where we slightly tweaked a test to avoid flakiness), it's annoying to have to wait for a very small reviewer pool, when most folks that are on the Ruby guild can help out review such changes. **Additional Notes:** N/A **How to test the change?** Check that future PRs affecting profiling can be merged with a review from anyone on the ruby-guild team.
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What does this PR do?
This PR fixes a profiler flaky spec from
https://app.circleci.com/pipelines/github/DataDog/dd-trace-rb/17279/workflows/bafa8b55-7fee-414f-8875-c7a8ef8b56dd/jobs/615562 :
The fix in this case is to make sure that we keep running the profiler until we observe a sample for the thread we expect, not just for any thread.
Motivation:
We aim to always have zero flaky specs in the profiler.
Change log entry
(No entry needed for this one)
Additional Notes:
If for some reason we're not able to sample the target thread, the test will still correctly fail (with the
try_wait_untilfailing).Fixes https://github.com/datadog/ruby-guild/issues/182
How to test the change?
Validate that CI is still green :)