Sergey Uttsel created IGNITE-18755:
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Summary: Empty data nodes list of a distribution zone.
Key: IGNITE-18755
URL: https://issues.apache.org/jira/browse/IGNITE-18755
Project: Ignite
Issue Type: Improvement
Reporter: Sergey Uttsel
h3. Motivation
In some cases list of data nodes for the distribution zone can be empty. For
example when scale down timer is expired and removed all data nodes or there
are no nodes in the cluster which pass the node filter of the zone. It can
leads to the data loss.
We need a proper solution to this problem as part of the improvement of the
rebalance. But for now, we need to make a temp solution to this problem and not
change the list of date nodes if this will lead to the empty list.
h3. Definition of Done
DistributionZoneManager doesn't save the list of date nodes to meta storage if
it is empty.
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