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https://issues.apache.org/jira/browse/IGNITE-7575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov reassigned IGNITE-7575:
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Assignee: (was: Alexander Paschenko)
> Concurrent updates of common keys cause silent wrong update count
> (intermittent issue)
> --------------------------------------------------------------------------------------
>
> Key: IGNITE-7575
> URL: https://issues.apache.org/jira/browse/IGNITE-7575
> Project: Ignite
> Issue Type: Bug
> Components: sql
> Reporter: Pavel Kuznetsov
> Priority: Major
> Labels: sql-stability
> Attachments: UpdateTestDrive.java
>
>
> In case of concurrent updates that affects some common keys we get silent
> wrong update count
> There's single table with two columns: key and val.
> I'm performing the same query that updates the same 1000 rows using 4
> threads. Query doesn't update keys, it only increments val.
> In some cases I get expected exception "Failed to update some keys because
> they had been modified concurrently" or have 1000 updated rows
> In the other case, API tells me that more than 1000 rows updated. Expected
> result are exception or successfull update of 1000 rows
> see reproducer attached. It should be run against
> {{ignite/examples/src/main/java/org/apache/ignite/examples/ExampleNodeStartup.java}}
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