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https://issues.apache.org/jira/browse/IGNITE-13051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17138584#comment-17138584
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Maksim Timonin commented on IGNITE-13051:
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[~ascherbakov] hi! thanks for comments!
# This is not Free Switch Exchange specific bug. The reason is that MVCC flag
is not set correctly in 2 places (my test cases cover that):
## when client topology is not configured with mvcc CacheConfiguration;
## when cluster_state_change event appeared for client topology.
I can add tests that covers the free-switch-exchange too and the
tests will pass. But do we really need them as they are already exists in your
13003 PR.
2. Yes, this is a point. The reason I did it is an attempt to fix flag
setting for all possible cases. But I think you're correct here and split this
change on 2 places as I described above;
3. Unfortunately naming _Future_ was introduced before me, I can't fix
without breaking code ownership. I'll remove all my code from this place and
somebody could fix the naming in future in any related tasks.
> Optimized affinity switch on baseline node left is broken for client topology
> and MVCC
> --------------------------------------------------------------------------------------
>
> Key: IGNITE-13051
> URL: https://issues.apache.org/jira/browse/IGNITE-13051
> Project: Ignite
> Issue Type: Bug
> Reporter: Alexey Scherbakov
> Assignee: Maksim Timonin
> Priority: Critical
> Fix For: 2.9
>
> Attachments: reproducer.patch, Снимок экрана 2020-06-03 в
> 19.41.53.png, Снимок экрана 2020-06-03 в 19.42.44.png
>
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
> If a node contains only client cache topology with MVCC enabled, PME will
> hang after changes introduced in IGNITE-12617.
> Reproduced by
> CachePartitionLossWithRestartsTest.testPartitionLossDetectionOnClientTopology[0
> false false -1] and enabled MVCC.
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