[jira] [Created] (IGNITE-12694) A possible partition desync if last supplier has left and returned later.

["Alexey Scherbakov (Jira)" <ji...@apache.org>]

Alexey Scherbakov created IGNITE-12694:
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             Summary: A possible partition desync if last supplier has left and returned later.
                 Key: IGNITE-12694
                 URL: https://issues.apache.org/jira/browse/IGNITE-12694
             Project: Ignite
          Issue Type: Bug
            Reporter: Alexey Scherbakov
            Assignee: Alexey Scherbakov
             Fix For: 2.9


Consider the scenario:

Two nodes A and B in the grid.

1. B is rebalancing from A.
2. Before rebalancing is finished A has left, partitions on B have stale data.
3. A returns to the topology.

Rebalancing will not start without manual intervention, because update counters for partitions will be same.

This happens because LWM is assigned during PME before actual updates are loaded.





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