[jira] [Commented] (IGNITE-18732) Remove blocking calls from SchemaManager

["Denis Chudov (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-18732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17689609#comment-17689609 ] 

Denis Chudov commented on IGNITE-18732:
---------------------------------------

[~apolovtcev] LGTM

> Remove blocking calls from SchemaManager
> ----------------------------------------
>
>                 Key: IGNITE-18732
>                 URL: https://issues.apache.org/jira/browse/IGNITE-18732
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Aleksandr Polovtcev
>            Assignee: Aleksandr Polovtcev
>            Priority: Minor
>              Labels: ignite-3, tech-debt
>             Fix For: 3.0.0-beta2
>
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> {{SchemaManager}} class has two methods, that perform a blocking {{get}} call on a {{CompletableFuture}}: {{latestSchemaVersion}} and {{schemaByVersion}}. Instead, these methods should return the future and its callers must be rewritten in an asynchronous style.
> UPD: When removing blocking calls in SchemaManager, it was discovered, that {{fireEvent}} was called from the async part of the configuration listener. This is a problem, because {{fireEvent}} listeners call {{VersionedValue#update}} which can already be notified of the new configuration revision, in which case update will throw an exception.



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