ncWMS2 renders incorrect imagery from NcML aggregates

[danwild]

I'm using v5.0.0-alpha3.

I have a fairly simple aggregate, which performs a joinExisting on a directory of files with single time steps in each file:

<netcdf xmlns="https://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2">
  <aggregation dimName="time" type="joinExisting">
    <scan location="/usr/local/tds/apache-tomcat-8.5.23/content/thredds/public/aggdata/" suffix="*.nc" subdirs="false" />
    </aggregation>
</netcdf>

The virtual dataset produced by this aggregation is correct.. however, when accessing the resulting WMS services the same imagery is returned regardless of the time parameter. The correct time steps are declared in GetCapabilities, but no matter which of these time steps you request in a GetMap query - it always returns the same image.

I have just deployed ncWMS (v2.2.12) as a separate application in tomcat, and am able to publish a WMS service using the OpenDAP endpoint derived from the same virtual dataset - and this behaves as expected.

[lesserwhirls]

I think this might be related to #977. I'm going to try to get a a snapshot version of 5.0 out with updated edal-java libraries to see if that fixes things, and will let you know when that is available. Thanks!

[lesserwhirls]

I have an updated version of edal-java in the TDS now - would it be possible to get a few files from your aggregation for me to try locally?

[SvenDowideit]

ooo, @danwild I'm following you around :)

I'm going to guess the data is from either gbr1_2.0 or gbr4_2.0 at https://dapds00.nci.org.au/thredds/catalog/catalogs/fx3/catalog.html

[danwild]

@lesserwhirls I have finally sent you some example files (check email).

[geojs]

I have the same issue with the tds 5.0.0 snapshot:
https://artifacts.unidata.ucar.edu/repository/unidata-snapshots/edu/ucar/tds/5.0.0-SNAPSHOT/tds-5.0.0-20180428.121827-443.war

But the getFeatureInfo is OK (values change with the time parameter).

If i update the edal jars to 1.4.1, the issue is the same:
https://github.com/Reading-eScience-Centre/edal-java/releases/tag/edal-1.4.1

(maybe related to #1041)