Stanislav Chizhov created KAFKA-6031:
----------------------------------------
Summary: Expose standby replicas endpoints in StreamsMetadata
Key: KAFKA-6031
URL: https://issues.apache.org/jira/browse/KAFKA-6031
Project: Kafka
Issue Type: Improvement
Components: streams
Reporter: Stanislav Chizhov
Currently reads for a key are served by single replica, which has 2 drawbacks:
- if replica is down there is a down time in serving reads for keys it was
responsible for until a standby replica takes over
- in case of semantic partitioning some replicas might become hot and there is
no easy way to scale the read load
If standby replicas would have endpoints that are exposed in StreamsMetadata it
would enable serving reads from several replicas, which would mitigate the
above drawbacks.
Due to the lag between replicas reading from multiple replicas simultaneously
would have weaker (eventual) consistency comparing to reads from single
replica. This however should be acceptable tradeoff in many cases.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
