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https://issues.apache.org/jira/browse/FLINK-7866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16235215#comment-16235215
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Sihua Zhou commented on FLINK-7866:
-----------------------------------
Hi [~till.rohrmann], i saw you have made a PR for
[FLINK-7153|https://issues.apache.org/jira/browse/FLINK-7153], can I take this
ticket now?
> Weigh list of preferred locations for scheduling
> ------------------------------------------------
>
> Key: FLINK-7866
> URL: https://issues.apache.org/jira/browse/FLINK-7866
> Project: Flink
> Issue Type: Improvement
> Components: Scheduler
> Affects Versions: 1.4.0, 1.3.2
> Reporter: Till Rohrmann
> Priority: Major
> Fix For: 1.5.0
>
>
> [~sihuazhou] proposed to not only use the list of preferred locations to
> decide where to schedule a task, but to also weigh the list according to how
> often a location appeared and then select the location based on the weight.
> That way, we would obtain better locality in some cases.
> Example:
> Preferred locations list: {{[location1, location2, location2]}}
> Weighted preferred locations list {{[(location2 , 2), (location1, 1)]}}
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