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Posted to issues@ignite.apache.org by "Vyacheslav Koptilin (Jira)" <ji...@apache.org> on 2021/01/12 19:47:00 UTC
[jira] [Updated] (IGNITE-13964) Query cancellation freezes on local
lazy queries
[ https://issues.apache.org/jira/browse/IGNITE-13964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vyacheslav Koptilin updated IGNITE-13964:
-----------------------------------------
Fix Version/s: 2.11
> Query cancellation freezes on local lazy queries
> ------------------------------------------------
>
> Key: IGNITE-13964
> URL: https://issues.apache.org/jira/browse/IGNITE-13964
> Project: Ignite
> Issue Type: Bug
> Components: sql
> Affects Versions: 2.9.1
> Reporter: Konstantin Orlov
> Assignee: Konstantin Orlov
> Priority: Major
> Fix For: 2.11
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The reason is a query cancellation that acquires an iterator's lock to check the availability of a next row and thus update a state of the cursor to prevent unnecessary request cancelation. But the lock is already held by a query thread to fetch a next page, so the cancellation is forced to wait till the page will be completely prefetched.
>
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