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https://issues.apache.org/jira/browse/IGNITE-20053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Denis Chudov reassigned IGNITE-20053:
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Assignee: Denis Chudov
> Empty data nodes are returned by data nodes engine
> --------------------------------------------------
>
> Key: IGNITE-20053
> URL: https://issues.apache.org/jira/browse/IGNITE-20053
> Project: Ignite
> Issue Type: Bug
> Reporter: Denis Chudov
> Assignee: Denis Chudov
> Priority: Major
> Labels: ignite-3
>
> There is a meta storage key called DISTRIBUTION_ZONES_LOGICAL_TOPOLOGY_KEY
> and it is refreshed by topology listener on topology events and stores
> logical topology. If the value stored by this key is null, then empty data
> nodes are returned from data nodes engine on data nodes calculation for a
> distribution zone. As a result, empty assignments are calculated for
> partitions, which leads to exception described in IGNITE-19466.
> Some integration tests, for example, ItRebalanceDistributedTest are flaky
> because of possible problems with value of
> DISTRIBUTION_ZONES_LOGICAL_TOPOLOGY_KEY and empty data nodes calculated by
> data nodes engine.
> Actually, the empty data nodes collection is a wrong result for this case
> because the current logical topology is not empty.
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