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https://issues.apache.org/jira/browse/SPARK-14883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-14883:
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Assignee: Apache Spark
> Fix wrong R examples and make them up-to-date
> ---------------------------------------------
>
> Key: SPARK-14883
> URL: https://issues.apache.org/jira/browse/SPARK-14883
> Project: Spark
> Issue Type: Bug
> Components: Documentation, Examples
> Reporter: Dongjoon Hyun
> Assignee: Apache Spark
>
> This issue aims to fix some errors in R examples and make them up-to-date in
> docs and example modules.
> - Fix the wrong usage of map. We need to use `lapply` if needed. However, the
> usage of `lapply` also needs to be reviewed since it's private.
> {code}
> -teenNames <- map(teenagers, function(p) { paste("Name:", p$name)})
> +teenNames <- SparkR:::lapply(teenagers, function(p) { paste("Name:", p$name)
> })
> {code}
> - Fix the wrong example in Section `Generic Load/Save Functions` of
> `docs/sql-programming-guide.md` for consistency.
> {code}
> -df <- loadDF(sqlContext, "people.parquet")
> -saveDF(select(df, "name", "age"), "namesAndAges.parquet")
> +df <- read.df(sqlContext, "examples/src/main/resources/users.parquet")
> +write.df(select(df, "name", "favorite_color"), "namesAndFavColors.parquet")
> {code}
> - Fix datatypes in `sparkr.md`.
> {code}
> -# |-- age: integer (nullable = true)
> +# |-- age: long (nullable = true)
> {code}
> {code}
> -## DataFrame[eruptions:double, waiting:double]
> +## SparkDataFrame[eruptions:double, waiting:double]
> {code}
> - Update data results
> {code}
> head(summarize(groupBy(df, df$waiting), count = n(df$waiting)))
> ## waiting count
> -##1 81 13
> -##2 60 6
> -##3 68 1
> +##1 70 4
> +##2 67 1
> +##3 69 2
> {code}
> - Replace deprecated functions: jsonFile -> read.json, parquetFile ->
> read.parquet
> {code}
> df <- jsonFile(sqlContext, "examples/src/main/resources/people.json")
> Warning message:
> 'jsonFile' is deprecated.
> Use 'read.json' instead.
> See help("Deprecated")
> {code}
> - Use up-to-date R-like functions: loadDF -> read.df, saveDF -> write.df,
> saveAsParquetFile -> write.parquet
> - Replace `SparkR DataFrame` with `SparkDataFrame` in `dataframe.R` and
> `data-manipulation.R`.
> - Other minor syntax fixes and typos.
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