Problem:

The test jstests/noPassthrough/mongobridge/mongobridge.js fails when the feature flag featureFlagShardAuthoritativeDbMetadata is enabled. This occurs because the test disrupts network replication (via mongobridge) after database creation, which triggers authoritative metadata writes to config.shard.databases with majority write concern. The metadata replication times out under simulated network delays, causing the test to hang indefinitely.

Solution:

• Pre-create the database before applying network disruptions.

• This ensures metadata replication completes while the network is healthy, isolating the test’s validation to user data operations under disruptions.