licl2014 opened a new issue #10747:
URL: https://github.com/apache/druid/issues/10747
Hyperunique is giving different results on multiple execution of same query
### Affected Version
0.12.3
### Description
What my query as follows:
```
{
"queryType":"timeseries",
"dataSource":{
"type":"table",
"name":"datasource"
},
"intervals":{
"type":"LegacySegmentSpec",
"intervals":[
"2020-12-31T16:00:00.000Z/2021-01-01T16:00:00.000Z"
]
},
"descending":false,
"virtualColumns":[
],
"filter":null,
"granularity":{
"type":"period",
"period":"P1D",
"timeZone":"Asia/Shanghai",
"origin":null
},
"aggregations":[
{
"type":"hyperUnique",
"name":"hll_cd",
"fieldName":"cd",
"isInputHyperUnique":false,
"round":false
}
],
"postAggregations":[
],
"context":{
"groupByStrategy":"v2",
"skipEmptyBuckets":true,
"timeout":30000
}
}
```
**Results**
attempt1:
```
[ {
"timestamp" : "2021-01-01T00:00:00.000+08:00",
"result" : {
"hll_cd" : 3.0347768393719055E7
}
} ]
```
attempt2:
```
[ {
"timestamp" : "2021-01-01T00:00:00.000+08:00",
"result" : {
"hll_cd" : 3.036636100442829E7
}
} ]
```
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