[jira] [Closed] (FLINK-3664) Create a method to easily Summarize a DataSet

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

     [ https://issues.apache.org/jira/browse/FLINK-3664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chesnay Schepler closed FLINK-3664.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.1.0

Implemented in 7eb58773eeccd248127124ded64383055842668b

> Create a method to easily Summarize a DataSet
> ---------------------------------------------
>
>                 Key: FLINK-3664
>                 URL: https://issues.apache.org/jira/browse/FLINK-3664
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: Todd Lisonbee
>            Assignee: Todd Lisonbee
>             Fix For: 1.1.0
>
>         Attachments: DataSet-Summary-Design-March2016-v1.txt
>
>
> Here is an example:
> {code}
> /**
>  * Summarize a DataSet of Tuples by collecting single pass statistics for all columns
>  */
> public Tuple summarize()
> Dataset<Tuple3<Double, String, Boolean>> input = // [...]
> Tuple3<DoubleColumnSummary,StringColumnSummary,BooleanColumnSummary> summary = input.summarize()
> summary.getField(0).stddev()
> summary.getField(1).maxStringLength()
> {code}



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