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Posted to issues@ignite.apache.org by "Roman Kondakov (JIRA)" <ji...@apache.org> on 2018/10/09 14:04:00 UTC

[jira] [Updated] (IGNITE-9828) MVCC: Continuous query failover.

     [ https://issues.apache.org/jira/browse/IGNITE-9828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roman Kondakov updated IGNITE-9828:
-----------------------------------
    Fix Version/s: 2.8

> MVCC: Continuous query failover.
> --------------------------------
>
>                 Key: IGNITE-9828
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9828
>             Project: Ignite
>          Issue Type: Task
>          Components: mvcc
>            Reporter: Roman Kondakov
>            Priority: Major
>             Fix For: 2.8
>
>
> We need to implement failover procedure for CQ with MVCC caches. Thoughts:
> * Mvcc updates should be cached in the persistent off-heap data structures instead of heap.
> * CQ failover tests should be adopted for mvcc scenarios. See {{IgniteCacheQuerySelfTestSuite4}}
> * We need to ensure the correctness of CQ and partition counters consistency in cases when some of TX participants are in prepared state and others are marked as rollback only. It looks like it doesn't work properly now.



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