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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/08/09 12:24:00 UTC
[jira] [Updated] (FLINK-13668) Add abstract classes for three
typical scenarios of (Flat)Mapper.
[ https://issues.apache.org/jira/browse/FLINK-13668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated FLINK-13668:
-----------------------------------
Labels: pull-request-available (was: )
> Add abstract classes for three typical scenarios of (Flat)Mapper.
> -----------------------------------------------------------------
>
> Key: FLINK-13668
> URL: https://issues.apache.org/jira/browse/FLINK-13668
> Project: Flink
> Issue Type: Sub-task
> Components: Library / Machine Learning
> Reporter: Xu Yang
> Priority: Major
> Labels: pull-request-available
>
> _FlatMapper transforms one Row type data into zero_, _one_, _or more Row type result data_, _and Mapper transforms one Row type data into one Row type result data. For most of practical_ *scenarios*, *the outputs are single column. Using these extend classes*, *we can be more focus on the algorithm development.*
> * *Add SISOFlatMapper for the Single Input column and Single Output column scenario.*
> * *Add SISOMapper for the Single Input column and Single Output column scenario.*
> * *Add MISOMapper for the Multi Input column and Single Output column scenario.*
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