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https://issues.apache.org/jira/browse/IGNITE-9763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16669814#comment-16669814
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Artem Budnikov commented on IGNITE-9763:
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[~rkondakov]
I added the information on using continuous queries with MVCC here:
[https://apacheignite-sql.readme.io/v2.6/docs/multiversion-concurrency-control#section-continuous-queries]
Please review.
> MVCC: Document TX updates visibility changes for continuous queries.
> --------------------------------------------------------------------
>
> Key: IGNITE-9763
> URL: https://issues.apache.org/jira/browse/IGNITE-9763
> Project: Ignite
> Issue Type: Task
> Components: documentation, mvcc
> Reporter: Roman Kondakov
> Assignee: Artem Budnikov
> Priority: Major
> Fix For: 2.7
>
>
> We should document visibility behaviour changes for MVCC transactions in
> Continuous Queries context: when MVCC transaction completes, it's updates are
> not visible immediately for the new transaction even they are started in
> continuous query listener. This is caused by the lag between transaction
> completes on the node and mvcc coordinator removes this transaction from the
> active list. Therefore all transactions started during this little time gap
> between these events will see just completed transaction as active in their
> snapshot, and, consequently, can't observe it's updates.
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