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https://issues.apache.org/jira/browse/KAFKA-12668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maksim Iakunin updated KAFKA-12668:
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Comment: was deleted
(was: [~jagsancio], hello!
Could you give me some test-case when a deadlock occurs?
Cannot reproduce the bug by myself.)
> MockScheduler is not safe to use in concurrent code.
> ----------------------------------------------------
>
> Key: KAFKA-12668
> URL: https://issues.apache.org/jira/browse/KAFKA-12668
> Project: Kafka
> Issue Type: Improvement
> Components: unit tests
> Reporter: Jose Armando Garcia Sancio
> Assignee: Maksim Iakunin
> Priority: Major
> Labels: newbie
>
> The current implementation of {{MockScheduler}} executes tasks in the same
> stack when {{schedule}} is called. This violates {{Log}}'s assumption since
> {{Log}} calls {{schedule}} while holding a lock. This can cause deadlock in
> tests.
> One solution is to change {{MockSchedule}} {{schedule}} method so that
> {{tick}} is not called. {{tick}} should be called by a stack (thread) that
> doesn't hold any locks.
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