[jira] [Created] (IGNITE-9538) MVCC TX: Send partition update counters to backup nodes on prepare state.

["Igor Seliverstov (JIRA)" <ji...@apache.org>]

Igor Seliverstov created IGNITE-9538:
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             Summary: 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: Igor Seliverstov
             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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