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Fix deadlock when waiting for churn thread #1316

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merged 1 commit into from
Apr 23, 2024

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Nettifani
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This patch fixes a deadlock I was running into. Without this fix, I could reproduce the deadlock in about 10 tries on average (on a small repository).

Fixes #1315.

By dropping `churn_tx` before joining `churn_thread`, we ensure that
the churn thread will not wait for more data. This prevents a deadlock
from occuring.
@Nettifani Nettifani requested a review from o2sh as a code owner April 23, 2024 11:50
@o2sh o2sh requested a review from Byron April 23, 2024 11:55
@Nettifani Nettifani changed the title Fix churn thread deadlock Fix deadlock when waiting for churn thread Apr 23, 2024
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@Byron Byron left a comment

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Oh wow, thanks so much for the fix (and the prior analysis in the respective issue)!

@o2sh o2sh merged commit 8c1ad74 into o2sh:main Apr 23, 2024
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@o2sh o2sh added the fix label May 7, 2024
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Churn computation sometimes hangs/deadlocks
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