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https://issues.apache.org/jira/browse/TC-303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan Durfey updated TC-303:
---------------------------
Comment: was deleted
(was: Should influx.db be its own component?)
> Influx summary query returns results not found in the corresponding series
> query (i.e. max and min)
> ----------------------------------------------------------------------------------------------------
>
> Key: TC-303
> URL: https://issues.apache.org/jira/browse/TC-303
> Project: Traffic Control
> Issue Type: Bug
> Components: Traffic Ops
> Affects Versions: 2.1.0
> Reporter: Dan Kirkwood
> Priority: Minor
> Labels: influx
>
> From https://github.com/Comcast/traffic_control/issues/539
> For example, the influx series query results may look like this:
> [
> [time, value],
> [time, 10],
> [time, 20],
> [time, 34],
> [time, 26]
> ]
> and the influx summary query results for the same timeframe may look like:
> {
> time: x,
> mean: y,
> min: 8,
> max: 75
> }
> notice how the min=8 and max=75 is strange because 8 and 75 are not found in
> the series query. this is because the series query is being grouped into 60s
> intervals (which is an average of 6 10s intervals) but the summary query
> looks at every value recorded in influx (on the 10s interval) between the
> timeframe.
> so in this example, i would expect min=10 and max=34
> maybe it's possible to run the summary query against the series query
> results?? like a subselect query like this:
> SELECT mean(value), percentile(value, 5), percentile(value, 95),
> percentile(value, 98), min(value), max(value), count(value) FROM (SELECT
> sum(value)/count(value) FROM tps_total WHERE cachegroup = 'total' AND
> deliveryservice = 'ds-name' AND time >='2015-09-17T03:38:00-06:00' AND time
> <= '2015-09-17T15:38:00-06:00' GROUP BY time(60s), cachegroup)
> this bug pertains to the following api endpoint
> /api/version/deliveryservice_stats.json when data source is influx.
> here are a couple sample influx queries:
> summary_query #-> $VAR1 = 'SELECT mean(value), percentile(value, 5),
> percentile(value, 95), percentile(value, 98), min(value), max(value),
> count(value) FROM tps_total WHERE time >= '2015-09-17T03:38:00-06:00' AND
> time <= '2015-09-17T15:38:00-06:00' AND cachegroup = 'total' AND
> deliveryservice = 'ds-name'';
> series_query #-> $VAR1 = 'SELECT sum(value)/count(value) FROM tps_total WHERE
> cachegroup = 'total' AND deliveryservice = 'ds-name' AND time
> >='2015-09-17T03:38:00-06:00' AND time <= '2015-09-17T15:38:00-06:00' GROUP
> BY time(60s), cachegroup';
> from [[email protected]]:
> this is not fixed. :( if you pass in another interval like 1h, this issue
> again occurs.
> this will require a summary query based on a series query or basically a
> nested query as the issue suggested and nested queries are not yet supported
> in influxdb - influxdb/influxdb#52
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