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https://issues.apache.org/jira/browse/FLINK-20375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17239238#comment-17239238
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Jark Wu commented on FLINK-20375:
---------------------------------
IIRC, runtime will truncate the operator name to max 80 characters, see
`TaskMetricGroup#METRICS_OPERATOR_NAME_MAX_LENGTH`.
You can search the log if there are "The operator name {} exceeded the {}
characters length limit and was truncated.".
> Add a switch to control the operator name in SQL
> ------------------------------------------------
>
> Key: FLINK-20375
> URL: https://issues.apache.org/jira/browse/FLINK-20375
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Runtime
> Reporter: hailong wang
> Priority: Major
>
> From the user-zh email:
> [http://apache-flink.147419.n8.nabble.com/FlinkSQL-Prometheus-td8858.html]
> The sql operator name is too large, this resulted in a lot of memory in
> querying Prometheus which is not friendly in the production environment.
>
> I think we can add a switch to control the operator name in SQL.
> A full name helps debug Jobs, and a short name helps to send this as metrics
> which will save bandwidth, CPU consumption during compression, and downstream
> storage.
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