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From "Todd Lisonbee (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-3664) Create a method to easily Summarize a DataSet
Date Wed, 23 Mar 2016 18:03:25 GMT

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

Todd Lisonbee updated FLINK-3664:
---------------------------------
    Description: 
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}

  was:
Here is an example:

/**
 * 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()


> 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
>         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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