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https://issues.apache.org/jira/browse/IGNITE-27461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Puchkovskiy updated IGNITE-27461:
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Description:
We need to know how the cluster behaves if a node accepting transaction load
(directly and via replication) starts lagging behind Metastorage so that its
Metastorage SafeTime falls behind for more than DelayDuration.
Both 'accepting load as a tx coordinator' and 'accepting load as a Raft
follower/learner' scenarios need to be covered.
Both explicit and implicit transactions are to be covered.
The nodes should not fail, the cluster should not fall apart. Ideally,
transactions/operations should just hang until there is enough memory; after
that, new user requests should be rejected. After the MS SafeTime lag is
removed, the situation should normalize (no more rejections, transaction
operations are processed quickly).
> Add tests for transaction processing with lagging Metastorage
> -------------------------------------------------------------
>
> Key: IGNITE-27461
> URL: https://issues.apache.org/jira/browse/IGNITE-27461
> Project: Ignite
> Issue Type: Improvement
> Reporter: Roman Puchkovskiy
> Priority: Major
> Labels: ignite-3
>
> We need to know how the cluster behaves if a node accepting transaction load
> (directly and via replication) starts lagging behind Metastorage so that its
> Metastorage SafeTime falls behind for more than DelayDuration.
> Both 'accepting load as a tx coordinator' and 'accepting load as a Raft
> follower/learner' scenarios need to be covered.
> Both explicit and implicit transactions are to be covered.
> The nodes should not fail, the cluster should not fall apart. Ideally,
> transactions/operations should just hang until there is enough memory; after
> that, new user requests should be rejected. After the MS SafeTime lag is
> removed, the situation should normalize (no more rejections, transaction
> operations are processed quickly).
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