Marcus Eriksson created CASSANDRA-20489:
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Summary: Avoid failing queries when epoch changes and replica goes
up/down
Key: CASSANDRA-20489
URL: https://issues.apache.org/jira/browse/CASSANDRA-20489
Project: Apache Cassandra
Issue Type: Bug
Components: Transactional Cluster Metadata
Reporter: Marcus Eriksson
Assignee: Marcus Eriksson
To make sure that we got responses from the correct replicas we recompute the
replica plan for queries if the epoch changes during the query to make sure we
got responses from a quorum of the nodes in the recomputed replica plan.
Problem is that this recomputation is filtering away down nodes, so we can fail
queries if the coordinator marks a replica down during the query and the epoch
changes, even though the placements have not changed.
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