[jira] [Commented] (FLINK-10993) Bring bloomfilter as a public API

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

    [ https://issues.apache.org/jira/browse/FLINK-10993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16696450#comment-16696450 ] 

vinoyang commented on FLINK-10993:
----------------------------------

[~fhueske@gmail.com] [~trohrmann@apache.org] What do you think about this feature?

> Bring bloomfilter as a public API
> ---------------------------------
>
>                 Key: FLINK-10993
>                 URL: https://issues.apache.org/jira/browse/FLINK-10993
>             Project: Flink
>          Issue Type: New Feature
>          Components: DataStream API
>            Reporter: vinoyang
>            Assignee: vinoyang
>            Priority: Major
>
> Flink internally provides an implementation of BloomFilter, but only for internal optimization, and does not provide APIs for public access.
> Here is a user mail discussion before : http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Bloom-filter-in-Flink-td10608.html
> Considering that many users have the need to "determine duplicates" in streaming computing, I think it would make sense to provide such an API.
> In addition, Spark has provided BloomFilter as a public API : 
> {code:java}
> val bf = df.stat.bloomFilter("dd",dataLen,0.01)
> val rightNum = rdd.map(x=>(x.toInt,bf.mightContainString(x)))
> {code}
>  
>  



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