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https://issues.apache.org/jira/browse/FLINK-18523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-18523:
-----------------------------------
Labels: auto-deprioritized-major stale-minor (was:
auto-deprioritized-major)
I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help
the community manage its development. I see this issues has been marked as
Minor but is unassigned and neither itself nor its Sub-Tasks have been updated
for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is
still Minor, please either assign yourself or give an update. Afterwards,
please remove the label or in 7 days the issue will be deprioritized.
> Advance watermark if there is no data in all of the partitions after some time
> ------------------------------------------------------------------------------
>
> Key: FLINK-18523
> URL: https://issues.apache.org/jira/browse/FLINK-18523
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / API
> Affects Versions: 1.11.0
> Reporter: chen yong
> Priority: Minor
> Labels: auto-deprioritized-major, stale-minor
>
> In the case of window calculations and eventTime scenarios, watermark cannot
> update because the source does not have data for some reason, and the last
> Windows cannot trigger the calculations.
> One parameter, table.exec.source. Idle -timeout, can only solve the problem
> of ignoring parallelism of watermark alignment that does not occur.But when
> there is no watermark in each parallel degree, you still cannot update the
> watermark.
> Is it possible to add a lock-timeout parameter (which should be larger than
> maxOutOfOrderness with default of "-1 ms") and if the watermark is not
> updated beyond this time (i.e., there is no data), then the current time is
> taken and sent downstream as the watermark.
>
> thanks!
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