[
https://issues.apache.org/jira/browse/FLINK-5118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15823662#comment-15823662
]
ASF GitHub Bot commented on FLINK-5118:
---------------------------------------
Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3106
The code checks for null since there is no *technical* contract that the
returned value is null. They aren't strictly necessary, and are only meant to
guard against programming errors in the metrics system.
Using a ```NullCounter``` would indeed do the same, would however introduce
effectively dead code.
> Inconsistent records sent/received metrics
> ------------------------------------------
>
> Key: FLINK-5118
> URL: https://issues.apache.org/jira/browse/FLINK-5118
> Project: Flink
> Issue Type: Bug
> Components: Metrics, Webfrontend
> Affects Versions: 1.2.0, 1.3.0
> Reporter: Ufuk Celebi
> Assignee: Chesnay Schepler
> Fix For: 1.2.0, 1.3.0
>
>
> In 1.2-SNAPSHOT running a large scale job you see that the counts for
> send/received records are inconsistent, e.g. in a simple word count job we
> see more received records/bytes than we see sent. This is a regression from
> 1.1 where everything works as expected.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
