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https://issues.apache.org/jira/browse/FLINK-7607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-7607:
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Labels: auto-deprioritized-major auto-unassigned performance stale-minor
(was: auto-deprioritized-major auto-unassigned performance)
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.
> Web Frontend Hangs with Large Numbers of Tasks
> ----------------------------------------------
>
> Key: FLINK-7607
> URL: https://issues.apache.org/jira/browse/FLINK-7607
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Web Frontend
> Affects Versions: 1.3.2
> Environment: Attempted to load the web frontend on a MacBook Pro 15"
> (late 2016) with 16 GB of memory using both Chrome 60.0 and Safari 10.1.2.
> Reporter: Joshua Griffith
> Priority: Minor
> Labels: auto-deprioritized-major, auto-unassigned, performance,
> stale-minor
>
> Viewing a job with a high number of tasks in the web front-end causes the
> page to hang, consuming 100% CPU on a core. At 200 tasks the page slows
> noticeably and scrolling results in long, non-responsive pauses. At 400 tasks
> the page only updates once per minute and is almost entirely non-responsive.
> Initially, I thought this was caused by rendering a complex job graph but
> opening the inspector and deleting the canvas did not improve page
> performance. Further inspection indicated that the page was redrawing every
> DOM element in the task list on every update.
> A possible solution is to use an approach similar to
> [react-list|https://github.com/orgsync/react-list] and only request
> data/render list items that are in view and only update DOM nodes that have
> changed.
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