[
https://issues.apache.org/jira/browse/GEODE-6488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ryan McMahon reassigned GEODE-6488:
-----------------------------------
Assignee: Ryan McMahon
> Query monitor may not remove all cancellation tasks if query object reused
> --------------------------------------------------------------------------
>
> Key: GEODE-6488
> URL: https://issues.apache.org/jira/browse/GEODE-6488
> Project: Geode
> Issue Type: Bug
> Components: querying
> Reporter: Ryan McMahon
> Assignee: Ryan McMahon
> Priority: Major
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> If a query instance is reused and monitored by multiple threads, it is
> possible that the cancellation tasks for each thread get unscheduled. This
> is due to a single cancellation task reference on the DefaultQuery which can
> get overwritten if multiple threads are using the same instance.
> Scenario:
> # Thread 1 monitors and executes a query, and its cancellation task gets
> assigned to the query instance.
> # Before Thread 1 stops monitoring, thread 2 monitors and executes using the
> same query instance, so Thread 1's cancellation task gets overwritten
> # Both threads request that the query no longer be monitored, but only
> thread 2's cancellation task is unscheduled and removed, because we lost
> thread 1's cancellation tasks reference when it was overwritten.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
