The socket source can't know how to parse your data. I think the right thing would be for it to throw an exception saying that you can't set the schema here. Would you mind opening a JIRA ticket?
If you are trying to parse data from something like JSON then you should use from_json` on the value returned. On Sun, Jun 18, 2017 at 12:27 AM, 萝卜丝炒饭 <1427357...@qq.com> wrote: > Hi all, > > L set the scheme for DataStreamReader but when I print the scheme.It just > printed: > root > |--value:string (nullable=true) > > My code is > > val line = ss.readStream.format("socket") > .option("ip",xxx) > .option("port",xxx) > .scheme(StructField("name",StringType)::(StructField("age", > IntegerType))).load > line.printSchema > > My spark version is 2.1.0. > I want the printSchema prints the schema I set in the code.How should I do > please? > And my original target is the received data from socket is handled as > schema directly.What should I do please? > > thanks > Fei Shao > > > > > > >