Cannot read property 'length' of undefined

[dwsorge]

Hello,

I am using the heatmap plugin with MetaQuery and I am getting "Cannot read property 'length' of undefined".

The Grafana query inspector is returning data which is coming from InfluxDB.

When I view in Chrome the error is: Cannot read property 'length' of undefined
When I view in IE the error is: Cannot read property 'length' of undefined or null reference

I am using Grafana v7.1.3
MetaQuery 0.0.3

This is working with Grafana v6.2.5 and MetaQuery 0.0.1 but this issue is blocking our upgrade.

The queries I'm using look like this

SELECT sum("available") FROM "" WHERE ("site" =~ /^<grafana_site_var>/ AND "resource" =~ /^<grafana_resource_var>$/) AND $timeFilter GROUP BY time(1h) fill(none)

[Gauravshah]

can you try changing it to a table to better understand the numbers ?
can you also post a screenshot of your panel setting ?
can you try with meta-queries latest with grafana 6.2.5 just to make sure its not metaqueries bug

[dwsorge]

I changed to a table and it still showing no data.

When I remove meta-queries I can get the data to show up in the table.

I tried running the latest meta-queries with Grafana v6.2.5 and it works there.

Here are the panel settings:

The query inspector shows that there is data when using the latest meta-queries with Grafana v7.1.3 but I still get the error when it tries to show the carpet plot.

[dwsorge]

Hello,

Is there any other info I can provide you that would be useful?

Thanks!

[favorinfo]

the same problem with grafanav7.13 and master version
query with influxdb

[jonathonpuff]

Possible to get this prioritized and assigned? We're stuck on 6.2.5 until resolved.

[jonathonpuff]

@Gauravshah can you revisit this? Like I mentioned in February we're locked into 6.2.5 until this gets addressed.

[jonathonpuff]

@Gauravshah any feedback or required information?

[Gauravshah]

apologies @jonathonpuff stuck into multiple things at work and unable to get on this one.
@ShilpaSivanesan should be able to take a look at this in 4 weeks time

[jonathonpuff]

Hi @Gauravshah and @ShilpaSivanesan , is this still on the list to be looked at? Thanks for the help here.

[vineethpaul]

@jonathonpuff
Please share screenshot of your query panel. May I know the datasource and it's version.

[dwsorge]

Here is the query panel

The data is originating from InfluxDB but we are using MetaQueries 0.0.9 from here (https://grafana.com/grafana/plugins/goshposh-metaqueries-datasource/)

The version of Grafana where this isn't working is v8.5.4 and the version where we do have it working is v6.2.5.

From the query inspector I can see that we are getting data that should be displayed but the panel is empty.

Thank you very much

Dustin

[jonathonpuff]

Hi @vineethpaul , any feedback on @dwsorge input?

[jonathonpuff]

Hi @vineethpaul , any progress?

[jonathonpuff]

Hi @vineethpaul checking in on when this can be looked at. Thanks!