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Type: Bug
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Resolution: Fixed
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Priority: Major - P3
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Affects Version/s: None
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Component/s: Sharding
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Fully Compatible
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ALL
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Sharding 2020-06-15
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0
Although VectorClockConfigServerTest inherits from ConfigServerTestFixture, its tests assume that nothing else is ticking the ClusterTime. However, ConfigServerTestFixture installs an actual DistLockManager, which spawns a ReplSetDistLockPinger thread that performs writes, thereby ticking ClusterTime. If the timing is such that these writes happen before/during the VectorClockConfigServerTest tests, they can cause the tests to fail. Therefore VectorClockConfigServerTest should install a mock DistLockManager.