RiversZheng opened a new issue #10049:
URL: https://github.com/apache/druid/issues/10049
GroupBY get different result when use populateCache
### Affected Version
in 0.16.1 and 0.17.1
### Description
on historical
```
druid.historical.cache.useCache=true
druid.historical.cache.populateCache=true
druid.cache.type=caffeine
druid.cache.sizeInBytes=128000000
```
sql
```
SELECT "dst_ip", "src_ip", sum("sum_volume") FROM "analysis_business_detail"
where __time >='2020-06-17' and __time <='2020-06-18' GROUP BY "dst_ip",
"src_ip" limit 200000
```
Query plan
```
{
"queryType": "groupBy",
"dataSource": {
"type": "table",
"name": "analysis_business_detail"
},
"intervals": {
"type": "intervals",
"intervals": [
"2020-06-17T00:00:00.000Z/2020-06-18T00:00:00.001Z"
]
},
"virtualColumns": [],
"filter": null,
"granularity": {
"type": "all"
},
"dimensions": [
{
"type": "default",
"dimension": "dst_ip",
"outputName": "d0",
"outputType": "STRING"
},
{
"type": "default",
"dimension": "src_ip",
"outputName": "d1",
"outputType": "STRING"
}
],
"aggregations": [
{
"type": "longSum",
"name": "a0",
"fieldName": "sum_volume",
"expression": null
}
],
"postAggregations": [],
"having": null,
"limitSpec": {
"type": "default",
"columns": [],
"limit": 200000
},
"context": {
"sqlQueryId": "57f0ef8f-5c6b-46c3-a084-bff9e513e1b5"
},
"descending": false
}
```
The results are different each time the query is executed
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