# Primary has wire version 5, secondary has 4, read preference primaryPreferred
# with maxStalenessSeconds. The client must error, even though it uses primary and
# never applies maxStalenessSeconds. Proves that the compatibility check precedes
# filtration.
---
topology_description:
type: ReplicaSetWithPrimary
servers:
- &1
address: a:27017
type: RSPrimary
avg_rtt_ms: 5
lastUpdateTime: 0
maxWireVersion: 5
lastWrite: {lastWriteDate: {$numberLong: "1"}}
- &2
address: b:27017
type: RSSecondary
avg_rtt_ms: 5
lastUpdateTime: 0
maxWireVersion: 4 # Too old.
lastWrite: {lastWriteDate: {$numberLong: "1"}}
read_preference:
mode: PrimaryPreferred
maxStalenessSeconds: 150
error: true