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https://issues.apache.org/jira/browse/FLINK-4651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kostas Kloudas updated FLINK-4651:
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Description: Currently the {{WindowOperator}} checkpoints the processing
time timers, but upon recovery it does not re-registers them with the
{{TimeServiceProvider}}. To actually reprocess them it relies on another
element that will come and register a new timer for a future point in time.
Although this is a realistic assumption in long running jobs, we can remove
this assumption by re-registering the restored timers with the
{{TimeServiceProvider}} in the {{open()}} method of the {{WindowOperator}}.
(was: Currently the {{WindowOperator}} checkpoints the processing time timers,
but upon recovery it does not re-registers them with the
{{{TimeServiceProvider}}}. To actually reprocess them it relies on another
element that will come and register a new timer for a future point in time.
Although this is a realistic assumption in long running jobs, we can remove
this assumption by re-registering the restored timers with the
{{{TimeServiceProvider}}} in the {{{open()}}} method of the
{{{WindowOperator}}}.)
> Re-register processing time timers at the WindowOperator upon recovery.
> -----------------------------------------------------------------------
>
> Key: FLINK-4651
> URL: https://issues.apache.org/jira/browse/FLINK-4651
> Project: Flink
> Issue Type: Bug
> Components: Windowing Operators
> Reporter: Kostas Kloudas
> Assignee: Kostas Kloudas
> Labels: windows
> Fix For: 1.1.3
>
>
> Currently the {{WindowOperator}} checkpoints the processing time timers, but
> upon recovery it does not re-registers them with the {{TimeServiceProvider}}.
> To actually reprocess them it relies on another element that will come and
> register a new timer for a future point in time. Although this is a realistic
> assumption in long running jobs, we can remove this assumption by
> re-registering the restored timers with the {{TimeServiceProvider}} in the
> {{open()}} method of the {{WindowOperator}}.
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