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https://issues.apache.org/jira/browse/SPARK-21224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Felix Cheung reassigned SPARK-21224:
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Assignee: Hyukjin Kwon
> Support a DDL-formatted string as schema in reading for R
> ---------------------------------------------------------
>
> Key: SPARK-21224
> URL: https://issues.apache.org/jira/browse/SPARK-21224
> Project: Spark
> Issue Type: Improvement
> Components: SparkR
> Affects Versions: 2.2.0
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Priority: Minor
>
> This might have to be a followup for SPARK-20431 but I just decided to make
> this separate for R specifically as many PRs might be confusing.
> Please refer the discussion in the PR and SPARK-20431.
> In a simple view, this JIRA describes the support for a DDL-formetted string
> as schema as below:
> {code}
> mockLines <- c("{\"name\":\"Michael\"}",
> "{\"name\":\"Andy\", \"age\":30}",
> "{\"name\":\"Justin\", \"age\":19}")
> jsonPath <- tempfile(pattern = "sparkr-test", fileext = ".tmp")
> writeLines(mockLines, jsonPath)
> df <- read.df(jsonPath, "json", "name STRING, age DOUBLE")
> collect(df)
> {code}
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