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https://issues.apache.org/jira/browse/JENA-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14985122#comment-14985122
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ASF subversion and git services commented on JENA-1060:
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Commit 133cf4b0407206777f85016da12f38e474bfed20 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=133cf4b ]
JENA-1060: Introduce "Alarm" as an instance of future timeout.
> AlarmClock can not cancel alarms properly.
> ------------------------------------------
>
> Key: JENA-1060
> URL: https://issues.apache.org/jira/browse/JENA-1060
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 3.0.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Minor
>
> The {{AlarmClock}} code does not cancel alarms properly (it hides and drops
> the {{ScheduledFuture}} needed to cancel an alarm).
> The query timeout code is not exposed to this issue because it has to be
> defensive about a timeout going off unexpectedly anyway (it can't yield the
> first result and reset timeout1 to timeout2 as a single compound, atomic
> action). Similarly, timeouts going off on finished queries have to be
> tolerated.
> The net effect on ARQ is a small build up of outstanding alarms which will
> eventually go away.
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