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https://issues.apache.org/jira/browse/IGNITE-8719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16549465#comment-16549465
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Dmitriy Sorokin commented on IGNITE-8719:
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[~agoncharuk], I wrote the reproducer working by your scheme, but so far no
confirmation for case when partially built index can be used. Look at my patch
[#4380|https://github.com/apache/ignite/pull/4380], please, and tell me your
opinion.
> Index left partially built if a node crashes during index create or rebuild
> ---------------------------------------------------------------------------
>
> Key: IGNITE-8719
> URL: https://issues.apache.org/jira/browse/IGNITE-8719
> Project: Ignite
> Issue Type: Bug
> Reporter: Alexey Goncharuk
> Assignee: Dmitriy Sorokin
> Priority: Critical
> Fix For: 2.7
>
>
> Currently, we do not have any state associated with the index tree. Consider
> the following scenario:
> 1) Start node, put some data
> 2) start CREATE INDEX operation
> 3) Wait for a checkpoint and stop node before index create finished
> 4) Restart node
> Since the checkpoint finished, the new index tree will be persisted to the
> disk, but not all data will be present in the index.
> We should somehow store information about initializing index tree and mark it
> valid only after all data is indexed. The state should be persisted as well.
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