Your company has a Cloud Bigtable database that requires strong consistency, but it also requires high availability. You have implemented Cloud Bigtable replication and specified single-cluster routing in the app profile for the database. Some users have noted that they occasionally receive query results inconsistent with what they should have received. The problem seems to correct itself within a minute. What could be the cause of this problem?

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Your company has a Cloud Bigtable database that requires strong consistency, but it also requires high availability. You have implemented Cloud Bigtable replication and specified single-cluster routing in the app profile for the database. Some users have noted that they occasionally receive query results inconsistent with what they should have received. The problem seems to correct itself within a minute. What could be the cause of this problem?