godfrey he created FLINK-22781:
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Summary: Incorrect result for group window aggregate when
mini-batch is enabled
Key: FLINK-22781
URL: https://issues.apache.org/jira/browse/FLINK-22781
Project: Flink
Issue Type: Bug
Components: Table SQL / Planner
Affects Versions: 1.14.0
Reporter: godfrey he
We can reproduce this issue through adding the following code to
{{GroupWindowITCase#testWindowAggregateOnUpsertSource}} method:
{code:java}
tEnv.getConfig.getConfiguration.setBoolean(
ExecutionConfigOptions.TABLE_EXEC_MINIBATCH_ENABLED, true)
tEnv.getConfig.getConfiguration.set(
ExecutionConfigOptions.TABLE_EXEC_MINIBATCH_ALLOW_LATENCY,
Duration.ofSeconds(1))
tEnv.getConfig.getConfiguration.setLong(
ExecutionConfigOptions.TABLE_EXEC_MINIBATCH_SIZE, 10L)
{code}
The reason is the group window without any data (the data may be retracted)
should not send any record.
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