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Posted to issues@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2018/10/08 12:11:00 UTC
[jira] [Reopened] (FLINK-10243) Add option to reduce latency
metrics granularity
[ https://issues.apache.org/jira/browse/FLINK-10243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chesnay Schepler reopened FLINK-10243:
--------------------------------------
Backport for 1.5/1.6 was requested.
> Add option to reduce latency metrics granularity
> ------------------------------------------------
>
> Key: FLINK-10243
> URL: https://issues.apache.org/jira/browse/FLINK-10243
> Project: Flink
> Issue Type: Sub-task
> Components: Configuration, Metrics
> Affects Versions: 1.7.0
> Reporter: Chesnay Schepler
> Assignee: Chesnay Schepler
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.7.0, 1.6.2, 1.5.5
>
>
> The latency is currently tracked separately from each operator subtask to each source subtask. The total number of latency metrics in the cluster is thus {{(# of sources) * (# of operators) * parallelism²}}, i.e. quadratic scaling.
> If we'd ignore the source subtask the scaling would be a lot more manageable.
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