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https://issues.apache.org/jira/browse/FLINK-19594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17212823#comment-17212823
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Yun Tang commented on FLINK-19594:
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This is caused by
[job-checkpoints-subtask.component.html|https://github.com/apache/flink/blob/b5b30650291e470a9635aef5f1348690bba78b29/flink-runtime-web/web-dashboard/src/app/pages/job/checkpoints/subtask/job-checkpoints-subtask.component.html#L98]
and
[job-overview-drawer-backpressure.component.html|https://github.com/apache/flink/blob/b5b30650291e470a9635aef5f1348690bba78b29/flink-runtime-web/web-dashboard/src/app/pages/job/overview/backpressure/job-overview-drawer-backpressure.component.html#L61].
However, this problem might be more historical as
[TaskInfo#getTaskNameWithSubtasks|https://github.com/apache/flink/blob/b5b30650291e470a9635aef5f1348690bba78b29/flink-core/src/main/java/org/apache/flink/api/common/TaskInfo.java#L131]
would return #getIndexOfThisSubtask() + 1 . Not sure whether this shown of web
UI is correct to align with getTaskNameWithSubtasks, Maybe [~aljoscha] or
[~vthinkxie] could help answer it.
> SubTasks start index don't unified and may confuse users
> --------------------------------------------------------
>
> Key: FLINK-19594
> URL: https://issues.apache.org/jira/browse/FLINK-19594
> Project: Flink
> Issue Type: Improvement
> Reporter: zlzhang0122
> Priority: Major
> Attachments: BackPresures.png, Checkpoints.png, SubTasks.png
>
>
> In flink web ui page, subTasks index start from 0 in SubTasks tab while in
> BackPressure tag start from 1, at the same time the subTasks index start from
> 1 in Checkpoints page.I think this may confuse users and does there have some
> design purpose ?
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