Ilya Pronin created MESOS-7973:
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Summary: Non-leading VOTING replica catch-up
Key: MESOS-7973
URL: https://issues.apache.org/jira/browse/MESOS-7973
Project: Mesos
Issue Type: Improvement
Components: replicated log
Reporter: Ilya Pronin
Assignee: Ilya Pronin
Currently it is not possible to perform consistent reads from non-leading
replicas due to the fact that if a non-leading replica is partitioned it may
miss some log positions and will not make any attempt to “fill” those holes.
If a non-leading replica could catch-up missing log positions it would be able
to serve eventually consistent reads to the framework. This would make it
possible to do additional work on non-leading framework replicas (e.g. offload
some reading from a leader to standbys or reduce failover time by keeping
in-memory storage represented by the log “hot”).
Design doc:
https://docs.google.com/document/d/1dERXJeAsi3Lnq9Akt82JGWK4pKNeJ6k7PTVCpM9ic_8/edit?usp=sharing
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