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A key is forgotten while acquire-replicas is running #6638

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merged 1 commit into from
Jun 29, 2022

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Closes #6479

@crusaderky crusaderky force-pushed the forget_acquire_replicas branch from 18eca1d to 582623c Compare June 28, 2022 00:09
@crusaderky crusaderky force-pushed the forget_acquire_replicas branch from 582623c to 3c9c528 Compare June 28, 2022 00:11
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Unit Test Results

See test report for an extended history of previous test failures. This is useful for diagnosing flaky tests.

       15 files  ±0         15 suites  ±0   10h 20m 17s ⏱️ - 3m 21s
  2 898 tests +1    2 809 ✔️  - 4    82 💤  - 1  5 +5  2 🔥 +1 
21 467 runs  +9  20 499 ✔️ +3  959 💤  - 1  7 +6  2 🔥 +1 

For more details on these failures and errors, see this check.

Results for commit 3c9c528. ± Comparison against base commit a8eb3b2.

@crusaderky crusaderky marked this pull request as ready for review June 28, 2022 10:16
@crusaderky crusaderky self-assigned this Jun 28, 2022
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@hendrikmakait hendrikmakait left a comment

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Code looks good to me!

@@ -531,7 +531,12 @@ async def test_fetch_to_missing(c, s, a, b):
6. the scheduler responds {"x": []}, because w1 in the meantime has lost the key.
7. x is transitioned fetch -> missing
"""
x = await c.scatter({"x": 1}, workers=[b.address])
# Note: submit and scatter are different. If you lose all workers holding the
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Thanks for the explanation of this change.

@crusaderky crusaderky merged commit bd7f43a into dask:main Jun 29, 2022
@crusaderky crusaderky deleted the forget_acquire_replicas branch June 29, 2022 11:45
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AMM can leave a forgotten task forever in missing state
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