Vladimir Steshin created IGNITE-23483:
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Summary: Restore snapshot check from lesser topology for snapshot
check distributed process.
Key: IGNITE-23483
URL: https://issues.apache.org/jira/browse/IGNITE-23483
Project: Ignite
Issue Type: Bug
Reporter: Vladimir Steshin
Assignee: Vladimir Steshin
Before the refactoring of snapshot validation, a single node had the ability to
check several snaphot parts if they were placed on the same node. As a result,
a snapshot can be checked by just one node, can be checked by insufficient
topology and can be restored from other topologies.
This was achieved by mapping available snapshot metadatas to actual online
topology. See `AbstractSnapshotVerificationTask#map(...)`. Now, we check only
the snapshot data related to the current node despite we read more than one
meta and there aren't enough online nodes.
The test `testMetaWarningRestoredByOnlyOneNode()` indicates the problem. A
broken snapshot is sucessfully validated.
We should restore the feature of checking several available snapshot parts on
one node.
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