Zhiwen Sun created FLINK-27663:
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Summary: upsert-kafka can't process delete message from
upsert-kafka sink
Key: FLINK-27663
URL: https://issues.apache.org/jira/browse/FLINK-27663
Project: Flink
Issue Type: Bug
Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
Affects Versions: 1.14.4, 1.13.6, 1.15.0
Reporter: Zhiwen Sun
upsert-kafka write DELETE data as Kafka messages with null values (indicate
tombstone for the key).
But when use upsert-kafka as a source table to consumer kafka messages write by
upsert-kafka sink, DELETE messages will be ignored.
related sql :
{code:java}
create table order_system_log(
id bigint,
PRIMARY KEY (id) NOT ENFORCED
) WITH (
'connector' = 'upsert-kafka',
'topic' = 'test_use',
'properties.bootstrap.servers' = 'your broker',
'properties.group.id' = 'your group id',
'value.json.fail-on-missing-field' = 'false',
'value.json.ignore-parse-errors' = 'true',
'key.json.fail-on-missing-field' = 'false',
'key.json.ignore-parse-errors' = 'true',
'key.format' = 'json',
'value.format' = 'json'
);
select
*
from
order_system_log
;
{code}
The problem may be produced by DeserializationSchema#deserialize,
this method does not collect data while subclass's deserialize return null.
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