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  1. Core Server
  2. SERVER-88029

Investigate why change_streams passthrough suites fail with replica set endpoint

    • Type: Icon: Bug Bug
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 8.0.0-rc0
    • Affects Version/s: None
    • Component/s: None
    • None
    • Cluster Scalability
    • Fully Compatible
    • ALL
    • 154

      Before SERVER-85770 changes, RouterServer was only added at MongoD in two situations:

      • If we deploy a shard and gEmbeddedRouter is enabled and we pass a --routerPort.
      • If gFeatureFlagAllMongodsAreSharded and gEmbeddedRouter are enabled.

      New change_streams passthrough suites were running only enabling gFeatureFlagAllMongodsAreSharded, not gEmbeddedRouter. Thus, all those tests were validated with a ReplicaSet without having ClusterRole::RouterServer, possibly breaking some assumptions.

      clusterRole = {ShardServer, ConfigServer}
      

      Once SERVER-85770 was committed, it has made RouterServer not depend on the gEmbeddedRouter feature flag, and once gFeatureFlagAllMongodsAreSharded is enabled on those new suites, we will always have:

      clusterRole = {ShardServer, RouterServer, ConfigServer}
      

      With that, all new change streams suites with replica set endpoint are failing.

            Assignee:
            cheahuychou.mao@mongodb.com Cheahuychou Mao
            Reporter:
            pol.pinol@mongodb.com Pol Pinol
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              Created:
              Updated:
              Resolved: