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https://issues.apache.org/jira/browse/FLINK-3160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15708872#comment-15708872
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Ufuk Celebi commented on FLINK-3160:
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Maybe I'm misunderstanding something, too. ;-) To me it looks like there is
currently no difference between viewing subtasks via the Subtasks or the
TaskManagers tab. I thought that we introduced the TaskManagers tab for users
who want to order all subtasks by host. But I think we should have kept the
Subtasks tab sorted by subtask index, which is what we had before, I think.
Does this make sense?
---
My last sentence ("Ideally, ...") was meant as a future improvement we could
do: there is only one tab, but the user can change the sort order dynamically
by clicking on the head line. But this is an independent thing.
> 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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