Fix flaky test in issue 2825 #2834
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To simulate the original bug, we need push sample during sweep-flush(achieved by doing push from preFlushChunks). Shutdown is used to trigger another sweep-flush, and not critical part of the test. Imporant part is that second flush doesn't ignore just-pushed sample (buggy version dropped it completely). Signed-off-by: Peter Štibraný <peter.stibrany@grafana.com>
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To trigger the original bug, we need to push sample during sweep-flush (achieved by doing push from preFlushChunks).
Shutdown is used to trigger another sweep-flush, and not critical part of the test. Imporant part is that second flush doesn't ignore just-pushed sample (buggy version dropped it completely).
Flakiness was introduced by shutting down ingester too early (possibly before new sample was pushed). Now we wait with shutdown.
Which issue(s) this PR fixes:
Fixes #2825
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