Konstantin Orlov created IGNITE-13964:
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Summary: 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
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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