Fabian Hueske created FLINK-8853:
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Summary: SQL Client cannot emit query results that contain a
rowtime attribute
Key: FLINK-8853
URL: https://issues.apache.org/jira/browse/FLINK-8853
Project: Flink
Issue Type: Bug
Components: Table API & SQL
Affects Versions: 1.5.0
Reporter: Fabian Hueske
Fix For: 1.5.0
Emitting a query result that contains a rowtime attribute fails with the
following exception:
{code:java}
Caused by: java.lang.ClassCastException: java.sql.Timestamp cannot be cast to
java.lang.Long
at
org.apache.flink.api.common.typeutils.base.LongSerializer.serialize(LongSerializer.java:27)
at
org.apache.flink.api.java.typeutils.runtime.RowSerializer.serialize(RowSerializer.java:160)
at
org.apache.flink.api.java.typeutils.runtime.RowSerializer.serialize(RowSerializer.java:46)
at
org.apache.flink.api.java.typeutils.runtime.TupleSerializer.serialize(TupleSerializer.java:125)
at
org.apache.flink.api.java.typeutils.runtime.TupleSerializer.serialize(TupleSerializer.java:30)
at
org.apache.flink.streaming.experimental.CollectSink.invoke(CollectSink.java:66)
... 44 more{code}
The problem is cause by the {{ResultStore}} which configures the
{{CollectionSink}} with the field types obtained from the {{TableSchema}}. The
type of the rowtime field is a {{TimeIndicatorType}} which is serialized as
Long. However, in the query result it is represented as Timestamp. Hence, the
type must be replaced by a {{SqlTimeTypeInfo<Timestamp>}}.
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