[
https://issues.apache.org/jira/browse/FLINK-7802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
godfrey he updated FLINK-7802:
------------------------------
Summary: Error occur when empty field collection was pushed into
TableSource (was: Bug in PushProjectIntoTableSourceScanRule when empty field
collection was pushed into TableSource)
> Error occur when empty field collection was pushed into TableSource
> --------------------------------------------------------------------
>
> Key: FLINK-7802
> URL: https://issues.apache.org/jira/browse/FLINK-7802
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: godfrey he
> Assignee: godfrey he
>
> Currently, if no fields will be used, empty field collection will be pushed
> into TableSource in PushProjectIntoTableSourceScanRule. Some exception will
> occur, e.g. java.lang.IllegalArgumentException: At least one field must be
> specified at
> org.apache.flink.api.java.io.RowCsvInputFormat.<init>(RowCsvInputFormat.java:50)
> Consider such SQL: select count(1) from tbl.
> So if no fields will be used, we should also keep some columns for
> TableSource to read some data.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
