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Type: New Feature
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Resolution: Won't Fix
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Priority: Major - P3
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None
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Affects Version/s: None
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Component/s: Replication
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Labels:None
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Repl 2019-10-21
Our TLA+ specs assume the oplog is never truncated. This is a reasonable simplification and makes our specs closely resemble the abstractions in Raft, and it permits us to verify Raft's "Log Matching Property".
Introduce a failpoint to disable truncation. We will enable the failpoint in mongod in preparation for extracting an execution trace from mongod's log and checking it against our TLA+ specs.