[ https://issues.apache.org/jira/browse/FLINK-2569?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chiwan Park reassigned FLINK-2569: ---------------------------------- Assignee: Chiwan Park > 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 > Assignee: Chiwan Park > Priority: Minor > > From the Flink Programming Guide section on Data Sources: > {quote} > 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. > {quote} > When specifying a ValueType, i.e. > {code} > CsvReader csvReader = env.readCsvFile(filename); > csvReader.types(IntValue.class, IntValue.class); > {code} > the following error occurs as BasicTypeInfo is specifically requested in > CsvReader.types(...). > {code} > 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 > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)