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Posted to issues@ratis.apache.org by "Mukul Kumar Singh (Jira)" <ji...@apache.org> on 2020/01/28 08:06:00 UTC
[jira] [Commented] (RATIS-801) Ratis snapshot should consider
stateMachine#appliedIndex for triggering snapshot
[ https://issues.apache.org/jira/browse/RATIS-801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17024932#comment-17024932 ]
Mukul Kumar Singh commented on RATIS-801:
-----------------------------------------
[~bharat], I feel it will be great addition to have StateMachine having the ability to trigger snapshots. Can we add a shouldTakeSnapshot() methods to StateMachine . ?
> Ratis snapshot should consider stateMachine#appliedIndex for triggering snapshot
> --------------------------------------------------------------------------------
>
> Key: RATIS-801
> URL: https://issues.apache.org/jira/browse/RATIS-801
> Project: Ratis
> Issue Type: Improvement
> Affects Versions: 0.5.0
> Reporter: Shashikant Banerjee
> Assignee: Bharat Viswanadham
> Priority: Major
> Fix For: 0.5.0
>
>
> Currently, while triggering snapshot, snapshotUpdater#appliedIndex is taken into account to decide whether it has exceeded the snapshot threshold from the last snapshotIndex. This may lead to creating more snapshots than usual as stateMachineUpdater#appliedIndex is updated as soon as the applyTransaction call happens. Ideally, Ratis snapshot should nbe triggered taking stateMachine's applied index into account.
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