sunjincheng created FLINK-7101:
----------------------------------
Summary: Fix Non-windowed group-aggregate error when using
`minIdleStateRetentionTime` config and retract agg
Key: FLINK-7101
URL: https://issues.apache.org/jira/browse/FLINK-7101
Project: Flink
Issue Type: Bug
Components: Table API & SQL
Affects Versions: 1.3.1, 1.3.0
Reporter: sunjincheng
Assignee: sunjincheng
Fix For: 1.4.0
When Non-windowed group-aggregate using {{minIdleStateRetentionTime}} config
and retract AGG, Will emit "NULL" agg value which we do not expect.
For example: ({{IntSumWithRetractAggFunction}})
1. Receive: CRow(Row.of(6L: JLong, 5: JInt, "aaa"), true)
2. Cleanup state
3. Receive: CRow(Row.of(6L: JLong, 5: JInt, "aaa"), false) // acc.f1 = -1,
getValue= null
So, we must change the logic of {{GroupAggProcessFunction}} as follows:
{code}
if (inputCnt != 0) {
...
} else {
...
}
{code}
TO
{code}
if (inputCnt > 0) {
...
} else {
if( null != prevRow.row){
...
}
}
{code}
What do you think? [~fhueske] [~hequn8128]
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