pdeva opened a new issue #7819: regression: queries unnecessary pushed down to historicals URL: https://github.com/apache/incubator-druid/issues/7819 ### Affected Version druid-0.14.2-incubating ### Description our segments are hour long (with 1 minute granularity). However, we are noticing that queries with short time intervals (1 min to 5 mins) that should be handled by KIS tasks on middle managers are being pushed down to historicals for no reason. for example, the query below covers a 5 minute time range, and is still pushed down to historical for no reason. This seems to be a regression which was introduced in some recent version of druid, maybe 0.12 or something, since we didn't see this behavior previously. Logged query in historical logs: ```js { "queryType": "groupBy", "dataSource": { "type": "table", "name": "apm-minute" }, "intervals": { "type": "segments", "segments": [ { "itvl": "2019-06-03T02:22:00.000Z/2019-06-03T02:27:00.000Z", "ver": "2019-06-02T23:58:59.432Z", "part": 0 } ] }, "virtualColumns": [], "filter": { "type": "and", "fields": [ { "type": "selector", "dimension": "name", "value": "JVM/Memory/HeapMax", "extractionFn": null }, { "type": "selector", "dimension": "jvmid", "value": "xxx", "extractionFn": null } ] }, "granularity": { "type": "period", "period": "PT129600M", "timeZone": "UTC", "origin": "2019-06-03T02:22:00.000Z" }, "dimensions": [ { "type": "LegacyDimensionSpec", "dimension": "name", "outputName": "name", "outputType": "STRING" } ], "aggregations": [ { "type": "doubleSum", "name": "value", "fieldName": "value", "expression": null } ], "postAggregations": [], "having": null, "limitSpec": { "type": "NoopLimitSpec" }, "context": { "applyLimitPushDown": false, "defaultTimeout": 300000, "finalize": false, "groupByOutermost": false, "groupByStrategy": "v2", "maxQueuedBytes": 0, "maxScatterGatherBytes": 9223372036854775807, "queryFailTime": 1559529245069, "queryId": "f1f0e693-dedb-40fb-8616-06143f4e1639", "timeout": 300000 }, "descending": false } ```
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