jacktomcat opened a new issue #6099: Inconsistencies in the result of the quantile aggregator URL: https://github.com/apache/incubator-druid/issues/6099 I use the quantile aggregator, but many times the query results are inconsistent. The version of Druid is 0.12.1 Here's my script { "queryType": "groupBy", "dataSource": { "type": "table", "name": "SVR_ACTION_DATA" }, "intervals": { "type": "LegacySegmentSpec", "intervals": [ "2018-04-30T00:00:00.000Z/2018-05-31T00:00:00.000Z" ] }, "virtualColumns": [], "filter": { "type": "and", "fields": [ { "type": "selector", "dimension": "biz_system_id", "value": "1", "extractionFn": null }, { "type": "selector", "dimension": "data_type", "value": "APP", "extractionFn": null } ] }, "granularity": "ALL", "dimensions": [], "context" : { "skipEmptyBuckets": "true" }, "aggregations": [ { "type": "longSum", "name": "respTime", "fieldName": "resp_time", "expression": null }, { "type": "longSum", "name": "successCount", "fieldName": "success_count", "expression": null }, { "type": "approxHistogramFold", "name": "resp_time_his", "fieldName": "resp_time_his", "resolution": 600, "numBuckets": 7, "lowerLimit": "-Infinity", "upperLimit": "Infinity" } ], "postAggregations": [ { "type": "arithmetic", "name": "response", "fn": "/", "fields": [ { "type": "fieldAccess", "name": "0-fieldaccess", "fieldName": "respTime" }, { "type": "fieldAccess", "name": "1-fieldaccess", "fieldName": "successCount" } ], "ordering": null }, { "type": "quantiles", "name": "respTimeHis", "fieldName": "resp_time_his", "probabilities": [ 0.5,0.6,0.7,0.8 ] } ], "having": null, "limitSpec": { "type": "default", "columns": [], "limit": 2147483647 }, "descending": false } The following is the result of my running: [ { "version": "v1", "timestamp": "2018-04-30T00:00:00.000Z", "event": { "successCount": 1364670887, "resp_time_his": { "breaks": [ -124.83333587646484, 0, 124.83333587646484, 249.6666717529297, 374.5, 499.3333435058594, 624.1666870117188, 749 ], "counts": [ 0, 5772020, 5751136, 5755229, 5747462.5, 5748575, 5775551 ] }, "response": 9.481008641169906, "respTime": 12938456472, "respTimeHis": { "probabilities": [ 0.5, 0.6, 0.7, 0.8 ], "quantiles": [ 373.30453, 448.30597, 523.41125, 598.38446 ], "min": 0, "max": 749 } } } ] But ```quantiles``` array values have errors,examples: > quantiles: [373.30453, 448.30597, 523.41125, 598.38446 ] > quantiles: [373.64453, 449.40597, 509.42345, 573.23112 ] > ..... What is the cause of this ? @fjy @gianm @xvrl @nishantmonu51 @drcrallen
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@druid.apache.org For additional commands, e-mail: commits-h...@druid.apache.org