hashicorp / hashicorp/memberlist
Not able to perform List.Members() inside a NotifyJoin()/NotifyLeave() as it results in deadlock
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- Dominant language
- Go
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Description
Not able to perform List.Members() inside a NotifyJoin()/NotifyLeave() as it results in deadlock. I see a single lock being used for the both.
is there a way to find total nodes in the cluster when an event occurs?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the deadlock when List.Members() is called from NotifyJoin() or NotifyLeave(), then inspect the locking around those operations. Done means the event callback can determine the cluster node count without deadlocking, with behavior covered by an appropriate test.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- go
- Domain
- distributed-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100