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https://issues.apache.org/jira/browse/SPARK-17646?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Josh Rosen resolved SPARK-17646.
--------------------------------
Resolution: Not A Problem
Yep, this is the intended behavior. From the Scaladoc:
{code}
/**
* Creates a new [[StructType]] by adding a new nullable field with no
metadata.
*
* val struct = (new StructType)
* .add("a", IntegerType)
* .add("b", LongType)
* .add("c", StringType)
*/
def add(name: String, dataType: DataType): StructType = {
StructType(fields :+ new StructField(name, dataType, nullable = true,
Metadata.empty))
}
{code}
> SparkType::add method does not work in 2.0.0 (in Java)
> ------------------------------------------------------
>
> Key: SPARK-17646
> URL: https://issues.apache.org/jira/browse/SPARK-17646
> Project: Spark
> Issue Type: Bug
> Components: Java API
> Environment: spark-sql_2.11
> version 2.0.0
> Java 8
> Reporter: Pawel Skorupinski
> Priority: Minor
>
> Add methods do not work:
> StructType inputStructure = new StructType();
> inputStructure.add("b",new IntegerType(),false);
> inputStructure.add("a","string");
> System.err.println(inputStructure.sql());
> >> STRUCT<>
> System.err.println(inputStructure.length());
> >> 0
> Constructor is working:
> StructField [] structFields = new StructField[1];
> structFields[0] = new StructField("a",new StringType(),false,null);
> inputStructure = new StructType(structFields);
> System.err.println(inputStructure.sql());
> >> STRUCT<`a`: STRING>
> System.err.println(inputStructure.length());
> >> 1
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