[
https://issues.apache.org/jira/browse/CASSSIDECAR-495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18125555#comment-18125555
]
Bianca Stanciu commented on CASSSIDECAR-495:
--------------------------------------------
PR updated and ready for review:
[https://github.com/apache/cassandra-sidecar/pull/380]
> Report each instance's own Sidecar instance id in the ring /
> token-range-replicas response
> ------------------------------------------------------------------------------------------
>
> Key: CASSSIDECAR-495
> URL: https://issues.apache.org/jira/browse/CASSSIDECAR-495
> Project: Sidecar for Apache Cassandra
> Issue Type: Improvement
> Components: Rest API
> Reporter: Bianca Stanciu
> Assignee: Bianca Stanciu
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> *+Problem:+*
> Analytics clients that talk to Sidecar behind a load balancer cannot tell
> which
> physical Cassandra instance a request will land on. When several instances are
> reachable only through one shared address (a load-balancer endpoint), the
> client
> has no way to attach the correct per-instance routing id per request.
> Two cassandra-analytics PRs work around this today, and both converge on the
> same
> missing server capability:
> - [CASSANALYTICS-177 / apache/cassandra-analytics#222
> |https://github.com/apache/cassandra-analytics/pull/222]— adds an instanceId
> query
> param to fix HTTP 421 routing. It can only resolve per-instance ids from
> static
> address-keyed config, so it fails fast (“Duplicate key” / ambiguous-config
> error)
> when instances share an address.
> - [CASSANALYTICS-181 / apache/cassandra-analytics#223
> |https://github.com/apache/cassandra-analytics/pull/223]— time-skew
> validation behind
> a load balancer; sidesteps per-replica addressing by querying the LB
> directly.
> Include each replica’s own Sidecar instance id in the ring /
> token-range-replicas
> response, so clients can resolve routing coverage from the live ring itself
> rather
> than from static, address-keyed configuration.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
