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20000907: New Version of LDM Available

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  • Subject: 20000907: New Version of LDM Available
  • Date: Thu, 07 Sep 2000 16:00:29 -0600
Gregg,

The MD5 checksum is computed on the data portion of the product.
The product name that is used to identify the product is not part of the MD5, 
nor is the feedtype, so attempting to reinsert the same identical product
will fail. If any part of the data from different sources is different
(eg a sequence number in the data of the product, additional line feeds etc)
then the computed MD5 will be different.

Steve Chiswell




>From: Gregory Grosshans <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200009071903.e87J3KN06642

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>We have a few different sources of NWS text & observation products (i.e. PPS/D
> DS,  NOAAPORT,
>X.25) presently injected into LDM under various feed types (PPS/DDS, FSL5, FSL
> 4).  The sequence
>numbers for the NOAAPORT and X.25 data are not unique.  With the new version o
> f LDM (5.1.2) if a
>product arrives via NOAAPORT into the FSL5 feed type and subsequently injected
>  into the queue,
>will LDM duplicate eliminate the same product received via PPS/DDS and the X.2
> 5 (FSL4) feed types?
>
>Thanks,
>Gregg
>
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