[
https://issues.apache.org/jira/browse/IGNITE-22466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Konstantin Orlov updated IGNITE-22466:
--------------------------------------
Summary: Sql. Support mapping to non-primary replicas (was: Sql. Support
mapping on backup replicas)
> Sql. Support mapping to non-primary replicas
> --------------------------------------------
>
> Key: IGNITE-22466
> URL: https://issues.apache.org/jira/browse/IGNITE-22466
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Reporter: Konstantin Orlov
> Assignee: Konstantin Orlov
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0.0-beta2
>
>
> At the moment, mapping service support mapping only on primary replicas. To
> improve data colocation, we may use backup replicas as well for RO queries.
> Let's improve mapping service in order to take advantage of backups locality
> and minimize amount data sent over the network.
> Some failures that should be considered during implementation:
> * Replica is not ready yet
> * Replica has already gone
> * Replica may be too outdated (safeTime of the replica is far behind of
> safeTime of the primary)
> * Anything else?
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
