[jira] [Commented] (FLINK-10096) Metrics report incorrect subtask ids

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-10096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16571703#comment-16571703 ] 

Chesnay Schepler commented on FLINK-10096:
------------------------------------------

Classic indexing conundrum.
The metric system uses the subtask index as returned by virtually all methods in the runtime, which is 0-indexed. The stringified name is 1-indexed.

> Metrics report incorrect subtask ids
> ------------------------------------
>
>                 Key: FLINK-10096
>                 URL: https://issues.apache.org/jira/browse/FLINK-10096
>             Project: Flink
>          Issue Type: Bug
>          Components: Metrics
>    Affects Versions: 1.6.0
>            Reporter: Piotr Nowojski
>            Priority: Major
>
> Subtask id is of by one when it's being reported by metrics compared to what is printed by {{StreamTask.toString()}}. For example metrics line:
> Initial sorter.137.buffers.inputQueueLength: 392
> vs actual name of this subtask:
> Initial sorter (138/192)



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