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[Fwd: Re: problems reading GFS data from NOMADS-HD; DConnect]

Hi John,
Thanks for answering my mail last Friday that quickly. Problems still
persist, but it looks like they are not permanent (sometimes in between
GFS data can be read without problems). Maybe the error messages below
help (they were produced this morning around 8 UTC).
Best Regards, Gerald

===== Reading 3d-variable 58: pressfc=====
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(SocketInputStream.java:168)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
        at java.io.BufferedInputStream.read1(BufferedInputStream.java:222)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:277)
        at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:741)
        at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:702)
        at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:712)
        at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:583)
        at dods.dap.DConnect.openConnection(DConnect.java:174)
        at dods.dap.DConnect.getDataFromUrl(DConnect.java:380)
        at dods.dap.DConnect.getData(DConnect.java:339)
        at dods.dap.DConnect.getData(DConnect.java:522)
        at ucar.nc2.dods.DODSNetcdfFile.readDODSData(DODSNetcdfFile.java:536)
        at ucar.nc2.dods.DODSVariable.readDODSData(DODSVariable.java:497)
        at ucar.nc2.dods.DODSVariable.read(DODSVariable.java:393)
        at SEVIS.NetcdfUtil.readNcArrayLayer(NetcdfUtil.java:1846)
        at SEVIS.NetcdfUtil.readNcArray(NetcdfUtil.java:1708)
        at SEVIS.NetcdfUtil.readNcArray_0MedAdapted(NetcdfUtil.java:1659)
        at SEVIS.DODSReader.writeNcVariables(DODSReader.java:825)
        at SEVIS.DODSReader.createNetcdfFile(DODSReader.java:676)
        at SEVIS.DODSReader.<init>(DODSReader.java:159)
        at SEVIS.SuperDataFile.getDodsFile(SuperDataFile.java:2526)
        at SEVIS.SuperDataFile.getSpecifiedNetcdfFile(SuperDataFile.java:2344)
        at SEVIS.MainFrame.forecastUpdate(MainFrame.java:2131)
        at 
SEVIS.MainFrame.jButtonDataUpdate_actionPerformed(MainFrame.java:2163)


------------------------ Ursprüngliche Nachricht ------------------------
Betreff: Re: problems reading GFS data from NOMADS-HD; DConnect
Von:     "Glenn Rutledge" <address@hidden>
Datum:   Fr, 16.04.2010, 19:41
An:      "John Caron" <address@hidden>
Cc:      "Gerald Spreitzhofer" <address@hidden>
         address@hidden
--------------------------------------------------------------------------

Thanks John,
We don't seem to be experiencing any issues.  I've cc:ed Dan Swank here
and he might be able to track down this issue.
Regards, Glenn

John Caron said the following on 4/16/2010 1:01 PM:
> Hi gerald: im not having any trouble with that URL. is it still
> happening (11 am MST) ?
>
> On 4/16/2010 10:15 AM, Gerald Spreitzhofer wrote:
>> Hi John,
>> I am operationally reading GFS 0.5deg data from the NOMADS-HD server via
>> DODS and the Java/NetCDF library. I did not change anything in my code
>> during the last couple of months, but recently (for instance the last 20
>> hours) there have been some errors reading data from there (see the
>> protocol below). I think I remember that there was a similar problem
>> last
>> fall, and the reason was a change in some security or firewall
>> setting on
>> NOMADS, just concerning this protocol. Do you know what the reason
>> for the
>> messages can be or who might be responsible? Thanks, Gerald
>>
>>
>> ===== Reading 3d-variable 28: hgtsfc=====
>> DConnect getData failed; retry (1,100)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[5:5][250:299][704:719]
>>
>> DConnect getData failed; retry (2,200)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[5:5][250:299][704:719]
>>
>> DConnect getData failed; retry (3,400)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[5:5][250:299][704:719]
>>
>> DConnect getData failed; retry (4,800)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[5:5][250:299][704:719]
>>
>> DConnect getData failed; retry (5,1600)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[5:5][250:299][704:719]
>>
>> DConnect getData failed; retry (1,100)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[0:0][250:299][0:66]
>>
>> DConnect getData failed; retry (2,200)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[0:0][250:299][0:66]
>>
>> DConnect getData failed; retry (3,400)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[0:0][250:299][0:66]
>>
>> DConnect getData failed; retry (4,800)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[0:0][250:299][0:66]
>>
>> DConnect getData failed; retry (5,1600)
>> http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20100415/gfs_hd_18z.dods?hgtsfc[0:0][250:299][0:66]
>>
>>
>>
>>>> -----------------------------------------
>>>> Dr. Gerald Spreitzhofer, Researcher
>>>> Institute of Meteorology and Geophysics
>>>> University of Vienna
>>>> A-1090 Vienna, Althanstrasse 14, UZA2
>>>> Tel.: +43-1-4277-537 33
>>>> email: address@hidden
>>>> -----------------------------------------
>>>>
>>>
>>
>>
>

-- 
Glenn K. Rutledge
Meteorologist / Physical Scientist
NOMADS Project Manager
NOAA's National Climatic Data Center
Contact: (828) 271-4097
address@hidden
NOMADS: http://nomads.ncdc.noaa.gov/