[thredds] "Conflicting constraint dimensions" error in TDS 4.2.4 does not occur in 4.2.3

• To: thredds@xxxxxxxxxxxxxxxx
• Subject: [thredds] "Conflicting constraint dimensions" error in TDS 4.2.4 does not occur in 4.2.3
• From: John Maurer <jmaurer@xxxxxxxxxx>
• Date: Mon, 28 Feb 2011 11:40:58 -1000

Hi THREDDS folks,
I'm trying to diagnose a strange problem that's been occurring since my
recent upgrade to TDS 4.2.4. I have since downgraded to 4.2.3 this morning
and the problem has disappeared. For some reason, the following URLs gives
me the following errors in 4.2.4:

http://oos.soest.hawaii.edu/thredds/dodsC/hioos/hfr/kokagg.ascii?lat[0:1:0][0:1:0],powr[0:1:0][0:1:0][0:1:0][0:1:0]

Error {
    code = 136;
    message = "Conflicting constraint dimensions for: vari.range [0,1,0,1]
!= [0,1,0,76]";
};

http://oos.soest.hawaii.edu/thredds/dodsC/hioos/hfr/kokagg.ascii?range[0:1:0],bearing[0:1:0],z[0:1:0],time[0:1:0],powr[0:1:0][0:1:0][0:1:0][0:1:0]

Error {
    code = 136;
    message = "Conflicting constraint dimensions for: vari.time [0,1,0,1] !=
[0,1,0,41226]";
};

I don't really understand what's going on here, but it looks like TDS is
plugging in an erroneous index in the OPeNDAP request (e.g. 76 instead of 1,
41226 instead of 1). In each case, these are the array sizes. 76 would be
the size, meaning 75 would be the last possible index. However, that doesn't
explain why it's not 1 like it's expecting. This is for a high-frequency
radio (HFR) dataset that has time, range, and bearing dimensions. I spent
some effort digging around for other possible problems, but a downgrade to
4.2.3 cleared it up lickety-split. Ideas what may have gone wrong in 4.2.4?
Thanks!,
John Maurer
Hawaii Ocean Observing System (HiOOS)