Flux QL - not all data points are shown

Grafana InfluxDB
1

Hello,

I’m using Influxdb 1.8.1 and Grafana 7.1.0 and try to use the influxdb with the new Flux QL. Therefore I’m created a new datasource and have created a query to get the same graph I already created with the normal Influx QL, what worked out fine witout any problems.

The problem is, when I now change the time range to e.g. last 24 hours, the graph based on Flux QL does not show all data points.

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My assumption is that this behavoiur is related to the “Max Data Points” value, which is empty, but in gray the value of the possible points are mentioned.

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When I check the result with the Query Instpector, I get more than the mentioned 1810 values. When I change now, the “Max Data Points” value to the value I get with the Query Inspector I get all data points.

The question is, how can I always get all data points? Or is this a bug?

Br
Christian

2

I guess there seems to be a bug.

I have a similar problem but I miss data points not at the end but in the middle:

First picture shows a time range from 2020-08-10 00:00:00 to 2020-08-17 23:59:59

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The second picture runs with the same eight queries but for a time range from 2020-08-11 00:00:00 to 2020-08-18 23:59:59

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I’m not sure if it’s a bug in grafana or the influxdb.
In chronograf I get the data and it’s the same time frame where no data is shown for all eight queries.

In the query inspector I can see that the data is already missing in the response, so it does not seem to be a visualization problem.

3

When inspecting the data stream with wireshark the time frame is also missing:

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So i guess it seems more than the influxdb is not delivering all the data.