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https://issues.apache.org/jira/browse/FLINK-7802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske updated FLINK-7802:
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Priority: Critical (was: Major)
> Exception occur when empty field collection was pushed into CSVTableSource
> --------------------------------------------------------------------------
>
> 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
> Priority: Critical
>
> Consider such SQL: select count(1) from csv_table.
> When above SQL was executed, an exception will occur:
> java.lang.IllegalArgumentException: At least one field must be specified
> at
> org.apache.flink.api.java.io.RowCsvInputFormat.<init>(RowCsvInputFormat.java:50)
> So if no fields will be used, we should also keep some columns for
> CSVTableSource to get row count.
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