Details
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Bug
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Resolution: Fixed
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Major
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6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.5.1, 6.5.0
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None
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Untriaged
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1
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Unknown
Description
Whenever a listener is being removed from the leader, a notification is sent to leader's change channel. This is done while holding a lock. If the channel is full, the function will block here.
On the other side, if leaderServer is processing a notification on leader's change channel, It will call GetActiveEnsembleSize which also attempts to take same lock (which is held by removeListener), and hence leading to a deadlock.
Attachments
Issue Links
- backports to
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- Closed
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- Closed
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- Closed
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| For Gerrit Dashboard: MB-39163 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 127279,2 | MB-39163: Avoid deadlock in leader if changech is full | master | gometa | Status: MERGED | +2 | +1 |
| 128190,2 | MB-39163: Increase size of the change notification channel in leader | master | gometa | Status: MERGED | +2 | +1 |
| 128570,2 | MB-39477: Avoid deadlock in leader if changech is full | mad-hatter | gometa | Status: MERGED | +2 | +1 |
| 128972,1 | MB-39477: Increase size of the change notification channel in leader | mad-hatter | gometa | Status: MERGED | +2 | +1 |
| 140991,3 | MB-40407: Avoid deadlock in leader if changech is full | alice | gometa | Status: MERGED | +2 | +1 |
| 140992,3 | MB-40407: Increase size of the change notification channel in leader | alice | gometa | Status: MERGED | +2 | +1 |
| 142893,2 | MB-43047: Avoid deadlock in leader if changech is full | 6.5.2 | gometa | Status: MERGED | +2 | +1 |
| 142895,2 | MB-43047: Increase size of the change notification channel in leader | 6.5.2 | gometa | Status: MERGED | +2 | +1 |