Could you send a complete URL for one of the datasets?
=Dennis Heimbigner
Unidata
On 6/26/2023 11:00 AM, Brown, Mitchell E (Mitch) CIV USARMY CEERD-CHL
(USA) wrote:
TDS Team,
We have a production TDS system that has been running for a long while
(~5 years) that accesses data for a collection of stations around the
US (~41 years of hourly data for many variables per station). When
trying to use TDS’ OpenDAP option to retrieve any record with
time-varying data some stations, we get a message back with an error
message (the variables with only one value work fine). The message we
get is vague (see below).
Dataset {
Float64 waveSpreadWindsea[time = 744];
} wis/Pacific/ST81512/1981/WIS-ocean_waves_ST81512_198103.nc;
---------------------------------------------
Error {
code = 500;
message = "null";
};
TDS can see there are 744 records (hourly data for one month), yet
cannot retrieve and send that data back. I have downloaded the NetCDF
file for this month and have been able to use other tools (HDFView, R,
and Python) to read the file contents with no issues, yet Thredds is
unable to retrieve that data.
For a station immediately adjacent to this location, TDS works
completely fine in retrieving using OpenDAP. The file sizes for each
station is reasonably similar, so it’s not like the data is not
written correctly.
Here are a couple of links that can be used as references for
“working” and “not working” in TDS.
Working:
//chldata.erdc.dren.mil/thredds/dodsC/wis/Pacific/ST81512/1981/WIS-ocean_waves_ST81512_198103.nc.ascii?waveSpreadWindsea%5B0:1:743%5D
Not Working:
//chldata.erdc.dren.mil/thredds/dodsC/wis/Pacific/ST81513/1981/WIS-ocean_waves_ST81513_198103.nc.ascii?waveSpreadWindsea%5B0:1:743%5D
There are plenty of other stations which show the same issue.
Would it be possible for someone (TDS developer or otherwise) to
assist us in tracking down why some stations work and others do not?
We are presently using the 5.5 snapsnot with Apache Tomcat 9.0.76 and
Java 11.0.19.
Thanks in advance,
Mitchell Brown
Coastal and Hydraulics Laboratory, ERDC
US Army Corps of Engineers
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