[jira] [Created] (FLINK-20386) ClassCastException when lookup join a JDBC table on INT UNSIGNED column

["Jark Wu (Jira)" <ji...@apache.org>]

Jark Wu created FLINK-20386:
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             Summary: ClassCastException when lookup join a JDBC table on INT UNSIGNED column
                 Key: FLINK-20386
                 URL: https://issues.apache.org/jira/browse/FLINK-20386
             Project: Flink
          Issue Type: Bug
          Components: Connectors / JDBC, Table SQL / Ecosystem
    Affects Versions: 1.11.2, 1.12.0
            Reporter: Jark Wu


The primary key of the MySQL is an INT UNSIGNED column, but declared INT in Flink. 
I know the [docs|https://ci.apache.org/projects/flink/flink-docs-release-1.11/dev/table/connectors/jdbc.html#data-type-mapping] say it should be decalred BIGINT in Flink, however, would be better not fail the job. 

{code}
java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer
	at org.apache.flink.table.data.GenericRowData.getInt(GenericRowData.java:149) ~[flink-table-blink_2.11-1.11-vvr-2.1.1-SNAPSHOT.jar:1.11-vvr-2.1.1-SNAPSHOT]
	at JoinTableFuncCollector$6460.collect(Unknown Source) ~[?:?]
	at org.apache.flink.table.functions.TableFunction.collect(TableFunction.java:203) ~[flink-table-blink_2.11-1.11-vvr-2.1.1-SNAPSHOT.jar:1.11-vvr-2.1.1-SNAPSHOT]
	at org.apache.flink.connector.jdbc.table.JdbcRowDataLookupFunction.eval(JdbcRowDataLookupFunction.java:162) ~[?:?]
{code}




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