[jira] [Created] (FLINK-2569) CsvReader support for ValueTypes

["Greg Hogan (JIRA)" <ji...@apache.org>]

Greg Hogan created FLINK-2569:
---------------------------------

             Summary: CsvReader support for ValueTypes
                 Key: FLINK-2569
                 URL: https://issues.apache.org/jira/browse/FLINK-2569
             Project: Flink
          Issue Type: Improvement
          Components: Java API
    Affects Versions: 0.9
            Reporter: Greg Hogan
            Priority: Minor


>From the Flink Programming Guide section on Data Sources: "readCsvFile(path) / CsvInputFormat - Parses files of comma (or another char) delimited fields. Returns a DataSet of tuples or POJOs. Supports the basic java types and their Value counterparts as field types."

When specifying a ValueType, i.e.

    CsvReader csvReader = env.readCsvFile(filename);
    csvReader.types(IntValue.class, IntValue.class);

the following error occurs as BasicTypeInfo is specifically requested in CsvReader.types(...).

org.apache.flink.client.program.ProgramInvocationException: The main method caused an error.
	at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:452)
	at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:353)
	at org.apache.flink.client.program.Client.run(Client.java:327)
	at org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:608)
	at org.apache.flink.client.CliFrontend.run(CliFrontend.java:296)
	at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:927)
	at org.apache.flink.client.CliFrontend.main(CliFrontend.java:977)
Caused by: java.lang.IllegalArgumentException: Type at position 0 is not a basic type.
	at org.apache.flink.api.java.typeutils.TupleTypeInfo.getBasicTupleTypeInfo(TupleTypeInfo.java:177)
	at org.apache.flink.api.java.io.CsvReader.types(CsvReader.java:393)
	at Driver.main(Driver.java:105)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:437)
	... 6 more




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