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https://issues.apache.org/jira/browse/APEXCORE-570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15630694#comment-15630694
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David Yan commented on APEXCORE-570:
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If the spooling capacity limit is reached, would the operator just get blocked?
If so, wouldn't that solve the back pressure problem at least partially?
> Prevent upstream operators from getting too far ahead when downstream
> operators are slow
> ----------------------------------------------------------------------------------------
>
> Key: APEXCORE-570
> URL: https://issues.apache.org/jira/browse/APEXCORE-570
> Project: Apache Apex Core
> Issue Type: Improvement
> Reporter: Pramod Immaneni
> Assignee: Pramod Immaneni
>
> If the downstream operators are slower than upstream operators then the
> upstream operators will get ahead and the gap can continue to increase.
> Provide an option to slow down or temporarily pause the upstream operators
> when they get too far ahead.
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