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Posted to issues@flink.apache.org by "Gabor Gevay (JIRA)" <ji...@apache.org> on 2016/05/16 13:17:12 UTC
[jira] [Updated] (FLINK-2144) Incremental count, average, and
variance for windows
[ https://issues.apache.org/jira/browse/FLINK-2144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gabor Gevay updated FLINK-2144:
-------------------------------
Summary: Incremental count, average, and variance for windows (was: Implement incremental count, average, and variance for windows)
> Incremental count, average, and variance for windows
> ----------------------------------------------------
>
> Key: FLINK-2144
> URL: https://issues.apache.org/jira/browse/FLINK-2144
> Project: Flink
> Issue Type: New Feature
> Components: Streaming
> Reporter: Gabor Gevay
> Priority: Minor
> Labels: statistics
>
> By count I mean the number of elements in the window.
> These can be implemented very efficiently building on FLINK-2143:
> Store: O(1)
> Evict: O(1)
> emitWindow: O(1)
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