[ 
https://issues.apache.org/jira/browse/SPARK-20914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Cristian Teodor updated SPARK-20914:
------------------------------------
    Description: 
i was looking over the 
[dataset|https://spark.apache.org/docs/2.1.1/api/java/org/apache/spark/sql/Dataset.html]
 and noticed the code on top that does not make sense in java.

{code}
 // To create Dataset<Row> using SparkSession
   Dataset<Row> people = spark.read().parquet("...");
   Dataset<Row> department = spark.read().parquet("...");

   people.filter("age".gt(30))
     .join(department, people.col("deptId").equalTo(department("id")))
     .groupBy(department.col("name"), "gender")
     .agg(avg(people.col("salary")), max(people.col("age")));
{code}
invalid parts:
*"age".gt(30)
*department("id")




  was:
i was looking over the 
{link]dataset|https://spark.apache.org/docs/2.1.1/api/java/org/apache/spark/sql/Dataset.html{link}
 and noticed the code on top that does not make sense in java.

{code}
 // To create Dataset<Row> using SparkSession
   Dataset<Row> people = spark.read().parquet("...");
   Dataset<Row> department = spark.read().parquet("...");

   people.filter("age".gt(30))
     .join(department, people.col("deptId").equalTo(department("id")))
     .groupBy(department.col("name"), "gender")
     .agg(avg(people.col("salary")), max(people.col("age")));
{code}
invalid parts:
*"age".gt(30)
*department("id")





> Javadoc contains code that is invalid
> -------------------------------------
>
>                 Key: SPARK-20914
>                 URL: https://issues.apache.org/jira/browse/SPARK-20914
>             Project: Spark
>          Issue Type: Improvement
>          Components: Documentation
>    Affects Versions: 2.1.1
>            Reporter: Cristian Teodor
>            Priority: Minor
>
> i was looking over the 
> [dataset|https://spark.apache.org/docs/2.1.1/api/java/org/apache/spark/sql/Dataset.html]
>  and noticed the code on top that does not make sense in java.
> {code}
>  // To create Dataset<Row> using SparkSession
>    Dataset<Row> people = spark.read().parquet("...");
>    Dataset<Row> department = spark.read().parquet("...");
>    people.filter("age".gt(30))
>      .join(department, people.col("deptId").equalTo(department("id")))
>      .groupBy(department.col("name"), "gender")
>      .agg(avg(people.col("salary")), max(people.col("age")));
> {code}
> invalid parts:
> *"age".gt(30)
> *department("id")



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