Druid count differ when we run same query on daliy and row data - druid

Question

When run query to ABS Data Source in Druid.I got some count but that differ when same query run with ABS_DAILY data source. And we make ABS_DAILY from ABS.
{
"queryType" : "groupBy",
"dataSource" : "ABS",
"granularity" : "all",
"intervals" : [ "2018-07-12T00:00:00.000Z/2018-07-13T00:00:00.000Z" ],
"descending" : "false",
"aggregations" : [ {
"type" : "count",
"name" : "COUNT",
"fieldName" : "COUNT"
} ],
"postAggregations" : [ ],
"dimensions" : [ "event_id" ]
}
Below json used for submit Daily job for druid which will create segments for ABS_DALIY for specific time
{
"spec": {
"ioConfig": {
"firehose": {
"dataSource": "ABS",
"interval": "2018-07-12T00:00:00.000Z/2018-07-13T00:00:00.000Z",
"metrics": null,
"dimensions": null,
"type": "ingestSegment"
},
"type": "index"
},
"dataSchema": {
"granularitySpec": {
"queryGranularity": "day",
"intervals": [
"2018-07-12T00:00:00.000Z/2018-07-13T00:00:00.000Z"
],
"segmentGranularity": "day",
"type": "uniform"
},
"dataSource": "ABS_DAILY",
"metricsSpec": [],
"parser": {
"parseSpec": {
"timestampSpec": {
"column": "server_timestamp",
"format": "dd MMMM, yyyy (HH:mm:ss)"
},
"dimensionsSpec": {
"dimensionExclusions": [
"server_timestamp"
],
"dimensions": []
},
"format": "json"
},
"type": "string"
}
}
},
"type": "index"
}
I quired to ABS_DAILY with below it return different result than ABS Count. Which it should not.
{
"queryType" : "groupBy",
"dataSource" : "ERS_DAILY",
"granularity" : "all",
"intervals" : [ "2018-07-12T00:00:00.000Z/2018-07-13T00:00:00.000Z" ],
"descending" : "false",
"aggregations" : [ {
"type" : "count",
"name" : "COUNT",
"fieldName" : "COUNT"
} ],
"postAggregations" : [ ],
"dimensions" : [ "event_id" ]
}

Answer 1

You are counting rows of daily aggregates.
To summarize pre-aggregated counts you now need to sum the count column (see type)
{
"queryType" : "groupBy",
"dataSource" : "ERS_DAILY",
"granularity" : "all",
"intervals" : [ "2018-07-12T00:00:00.000Z/2018-07-13T00:00:00.000Z" ],
"descending" : "false",
"aggregations" : [ {
"type" : "longSum",
"name" : "COUNT",
"fieldName" : "COUNT"
} ],
"postAggregations" : [ ],
"dimensions" : [ "event_id" ]
}