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https://issues.apache.org/jira/browse/FLINK-3160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15695879#comment-15695879
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Ufuk Celebi commented on FLINK-3160:
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I just noticed that we overlooked something: currently both the subtasks _and_ 
the taskmanagers view sort by host. This should have been only added for the 
taskmanagers tab.

Ideally, sorting by a different column should not require us to add a separate 
tab. Would that be a good alternative to solve this, Greg? For now I would like 
to revert the change in {{web/partials/jobs/job.plan.node.subtasks.html}} and 
remove the {{orderBy: host}}.

> Aggregate operator statistics by TaskManager
> --------------------------------------------
>
>                 Key: FLINK-3160
>                 URL: https://issues.apache.org/jira/browse/FLINK-3160
>             Project: Flink
>          Issue Type: Improvement
>          Components: Webfrontend
>    Affects Versions: 1.0.0
>            Reporter: Greg Hogan
>            Assignee: Greg Hogan
>             Fix For: 1.0.0
>
>
> The web client job info page presents a table of the following per task 
> statistics: start time, end time, duration, bytes received, records received, 
> bytes sent, records sent, attempt, host, status.
> Flink supports clusters with thousands of slots and a job setting a high 
> parallelism renders this job info page unwieldy and difficult to analyze in 
> real-time.
> It would be helpful to optionally or automatically aggregate statistics by 
> TaskManager. These rows could then be expanded to reveal the current per task 
> statistics.
> Start time, end time, duration, and attempt are not applicable to a 
> TaskManager since new tasks for repeated attempts may be started. Bytes 
> received, records received, bytes sent, and records sent are summed. Any 
> throughput metrics can be averaged over the total task time or time window. 
> Status could reference the number of running tasks on the TaskManager or an 
> idle state.



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