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Type: Task
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Resolution: Done
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Priority: Major - P3
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Affects Version/s: None
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Component/s: manual
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Labels:
Description
'reIndex' no longer takes a global lock. The strongest lock it now takes is an exclusive collection lock.
Description of Linked Ticket
Remove global X lock acquisition for reIndex. This is because acquiring global lock in X mode can be blocked by prepared transactions. The enqueued global X lock can block oplog queries which need the global IS lock. If these oplog queries and the data replication are needed to satisfy the prepared transaction's write concern, then the prepare transaction and replication cannot make progress. Thus a deadlock occurs.
Alternatively, if removing global X lock is not an option, deprecate the command or make sure it won't be blocked on prepare transactions.
Scope of changes
Impact to Other Docs
MVP (Work and Date)
Resources (Scope or Design Docs, Invision, etc.)
- documents
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SERVER-44026 Remove global X lock for reIndex
- Closed