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Deadlock when undeclaring subscriber #1650

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oteffahi opened this issue Dec 10, 2024 · 0 comments · Fixed by #1649
Closed

Deadlock when undeclaring subscriber #1650

oteffahi opened this issue Dec 10, 2024 · 0 comments · Fixed by #1649
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@oteffahi
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Describe the bug

Subscriber undeclaration can currently deadlock when Zenoh is compiled with "unstable" feature, due to a write lock that is not dropped when undeclaring a remote-locality subscriber that is not the last one.

To reproduce

  1. Compile Zenoh with "unstable" feature.
  2. Declare multiple subscribers on the same keyexpr.
  3. Drop one of the subscribers: it deadlocks.

System info

Zenoh 1.0.4
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Fix deadlock in subscriber undeclaration ZettaScaleLabs/zenoh
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@oteffahi