[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: 20011218: LDM and duplicate products

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: Re: 20011218: LDM and duplicate products
  • Date: Thu, 20 Dec 2001 13:53:35 -0700 (MST)
Hi Gregg, 

It appears that if the duplicate entry was delivered via pqinsert, you
would see a "Product already in queue" in your ldmd.log file...However, if
the duplicate is received via pqing, it may not show in the
logs...generally, the products off the dish (via pqing) should arrive
first, and I am not certain if the duplicates would be logged via that
scenario..

What are you looking for in your logs?

Are you grepping "product already in queue" ?

Is this creating any unique problems (i.e. duplicate products being filed
in same dir?)

Let me know if you see anything like "product already in queue" in your
ldmd.log files.

If not, and you are not getting duplicates filed, we will need to
investigate further..and dig deeper into the code.

Thank you,


-Jeff
____________________________                  _____________________
Jeff Weber                                    address@hidden
Unidata Support                               PH:303-497-8676 
NWS-COMET Case Study Library                  FX:303-497-8690
University Corp for Atmospheric Research      3300 Mitchell Ln
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000
________________________________________      ______________________

On Tue, 18 Dec 2001, Unidata Support wrote:

> 
> ------- Forwarded Message
> 
> >To: address@hidden
> >From: Gregory Grosshans <address@hidden>
> >Subject: LDM and duplicate products
> >Organization: UCAR/Unidata
> >Keywords: 200112181622.fBIGMBN10222
> 
> What feature in LDM controls the logging mechanism to indicate a
> duplicate product has been received?   I expect single site radar data
> to be dup'ed but do not see it in ldmd.log, even with increasing the
> verbosity of the pqact by 1, via 'kill -USR2 {pqact pid}.
> 
> I'm ingesting a UNISYS radar feed (consisting of single site and mosaic
> imagery) into LDM with a feedtype of 'WSI' via pqinsert.  The single
> site radar products from NOAAPORT (SDUS[2357]i)  are inserted into the
> LDM queue via the pq_insert call as feedtype 'NNEXRAD'.   With the
> NOAAPORT feed I strip off the CCB and WMO Header so the product looks
> just like it does from the Unisys feed (and the NWS radar multicast
> feed).
> 
> I've stored a product receive via UNISYS and via NOAAPORT and they are
> identical, byte for byte.
> 
> Thanks,
> Gregg Grosshans
> SPC
> 
> 
> ------- End of Forwarded Message
> 
>