Details
Description
When the featureCompatibilityVersion is 3.4, the config servers will return configsvr:2 in their isMaster response. This is a config server mode number that 3.2 mongos does not understand. This will prevent 3.2 mongos from connecting to the config servers, and thus will also prevent mongos from starting up against a featureCompatibilityVersion("3.4") cluster.
Attachments
Issue Links
- is documented by
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DOCS-9472 Docs for SERVER-25158: Prevent a 3.2 mongos from joining a featureCompatibilityVersion("3.4") cluster
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- Closed
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- related to
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SERVER-26264 Make 3.2 mongos fail gracefully on startup when cluster is featureCompatibilityVersion("3.4")
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- Closed
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SERVER-26265 Test that 3.2 mongos fails to join a featureCompatibilityVersion("3.4") cluster
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- Closed
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SERVER-26261 MongoRunner.versionIterator.iterator.toString() should not advance the iterator
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- Closed
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