Dawid Wysakowicz created FLINK-18580:
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Summary: Incomplete conversion for MySQL types
Key: FLINK-18580
URL: https://issues.apache.org/jira/browse/FLINK-18580
Project: Flink
Issue Type: Bug
Components: Connectors / JDBC, Table SQL / Ecosystem
Affects Versions: 1.11.0
Reporter: Dawid Wysakowicz
The mapping of types returned from MySQL jdbc driver is incomplete according to
the table:
https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-type-conversions.html
E.g. the {{BIGINT}} does not account for {{java.math.BigInteger}}.
User reported problem with it:
{code}
CREATE TABLE user_account(
uid BIGINT,
system_unique_id STRING,
name STRING,
account STRING,
passwd STRING,
salt STRING,
type INT,
avatar STRING,
source STRING,
ksjk_existing TINYINT,
created_at INT,
updated_at INT,
deleted_at INT,
PRIMARY KEY (uid) NOT ENFORCED
) WITH (
'connector' = 'jdbc',
'url' = 'jdbc:mysql://xxx:3306/xxxx',
'table-name' = 'user_account',
'driver' = 'com.mysql.jdbc.Driver',
'username' = 'xxx',
'password' = 'xxx'
);
{code}
{code}
Caused by: java.lang.ClassCastException: java.math.BigInteger cannot be cast to
java.lang.LongCaused by: java.lang.ClassCastException: java.math.BigInteger
cannot be cast to java.lang.Long at
org.apache.flink.table.data.GenericRowData.getLong(GenericRowData.java:154)
~[flink-table_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.table.data.RowData.get(RowData.java:260)
~[flink-table_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.toBinaryRow(RowDataSerializer.java:194)
~[flink-table-blink_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.serialize(RowDataSerializer.java:97)
~[flink-table-blink_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.serialize(RowDataSerializer.java:50)
~[flink-table-blink_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.streaming.runtime.streamrecord.StreamElementSerializer.serialize(StreamElementSerializer.java:175)
~[flink-dist_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.streaming.runtime.streamrecord.StreamElementSerializer.serialize(StreamElementSerializer.java:46)
~[flink-dist_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.runtime.plugable.SerializationDelegate.write(SerializationDelegate.java:54)
~[flink-dist_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.runtime.io.network.api.serialization.SpanningRecordSerializer.serializeRecord(SpanningRecordSerializer.java:71)
~[flink-dist_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:117)
~[flink-dist_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter.emit(ChannelSelectorRecordWriter.java:60)
~[flink-dist_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:107)
~[flink-dist_2.12-1.11.0.jar:1.11.0] at
org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:89)
~[flink-dist_2.12-1.11.0.jar:1.11.0]
{code}
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