Gopal V created YARN-3373:
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Summary: TTL & identity aware read cache for the SRV records
Key: YARN-3373
URL: https://issues.apache.org/jira/browse/YARN-3373
Project: Hadoop YARN
Issue Type: Sub-task
Components: yarn
Reporter: Gopal V
The freshness/staleness checks of the SRV record should be an abstracted
implementation detail of the service registry.
This implies that every client is asked to listServiceRecords each time they
require a list of the records, which would be incredibly expensive if it
involved network round-trips during normal tight-loop operations.
The combination of unique binding records and the TTL provides the equivalent
of the DNS (fixed CNAME -> unique A) roll-over mechanisms used to cache-bust
effectively on the client-side.
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