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Posted to issues@ignite.apache.org by "Vladimir Ozerov (JIRA)" <ji...@apache.org> on 2018/09/25 13:57:00 UTC
[jira] [Updated] (IGNITE-9538) MVCC TX: Send partition update
counters to backup nodes on prepare state.
[ https://issues.apache.org/jira/browse/IGNITE-9538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vladimir Ozerov updated IGNITE-9538:
------------------------------------
Ignite Flags: (was: Docs Required)
> MVCC TX: Send partition update counters to backup nodes on prepare state.
> -------------------------------------------------------------------------
>
> Key: IGNITE-9538
> URL: https://issues.apache.org/jira/browse/IGNITE-9538
> Project: Ignite
> Issue Type: Task
> Components: cache, mvcc
> Reporter: Igor Seliverstov
> Assignee: Roman Kondakov
> Priority: Major
> Fix For: 2.7
>
>
> There are several issues with partition update counters consistency in transactional caches. The next approach solves most of them:
> # Count per-partition updates
> # on prepare state on primary node update current partition counter incrementing it by per-partition updates count and send initial value with updates count to backup nodes
> # on backup nodes hold all pending updates and update partition update counter applying the lowest gapless update (on tx finish).
> # on historical rebalance use partition update counter as start point.
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