xiemeilong created FLINK-16269:
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Summary: Generic type can not be matched when convert table to
stream.
Key: FLINK-16269
URL: https://issues.apache.org/jira/browse/FLINK-16269
Project: Flink
Issue Type: Bug
Components: API / Type Serialization System
Affects Versions: 1.10.0
Reporter: xiemeilong
The query result schema printed by table.printSchema():
{noformat}
|-- deviceId: BIGINT
|-- channel: STRING
|-- schemaId: BIGINT
|-- productId: BIGINT
|-- schema: LEGACY('RAW', 'ANY<com.yunmo.iot.schema.Schema>')
{noformat}
then excuting table.toRetractStream[DeviceSchema].print(), exception throwed:
{noformat}
Exception in thread "main" org.apache.flink.table.api.ValidationException:
Field types of query result and registered TableSink do not match.
Query schema: [deviceId: BIGINT, channel: STRING, schemaId: BIGINT, productId:
BIGINT, schema: RAW('com.yunmo.iot.schema.Schema', ?)]
Sink schema: [deviceId: BIGINT, channel: STRING, schemaId: BIGINT, productId:
BIGINT, schema: LEGACY('RAW', 'ANY<com.yunmo.iot.schema.Schema>')]{noformat}
The com.yunmo.iot.schema.Schema is a generic type.
The schema field of Query schema change from LEGACY('RAW' to RAW, but the Sink
schema still a LEGACY('RAW'
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