[jira] [Created] (SPARK-21147) the schema of socket source can not be set.

["Fei Shao (JIRA)" <ji...@apache.org>]

Fei Shao created SPARK-21147:
--------------------------------

             Summary: the schema of socket source can not be set.
                 Key: SPARK-21147
                 URL: https://issues.apache.org/jira/browse/SPARK-21147
             Project: Spark
          Issue Type: Bug
          Components: Structured Streaming
    Affects Versions: 2.1.0
         Environment: Win7,spark 2.1.0
            Reporter: Fei Shao


The schema set for DataStreamReader can not work. The code is shown as below:
val line = ss.readStream.format("socket")
.option("ip",xxx)
.option("port",xxx)
.schema( StructField("name",StringType)::StructField("area",StringType)::Nil)
.load
line.printSchema

The printSchema prints:
root
|--value:String(nullable=true)

According to the code, it should print the schema set by schema().

Suggestion from Michael Armbrust:
throw an exception saying that you can't set schema here.




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