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20020207: missing products

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  • Subject: 20020207: missing products
  • Date: Thu, 07 Feb 2002 13:13:58 -0700
>From: Harry Edmon <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200202071958.g17Jwtx15748

>I am having an internal problem sending products between two machines.  For so
> me
>reason the RPC call on the sending machine is timing out.  This causes the
>process to die and a new feed process to start.  However, it appears that the
>new process does not take over exactly where the old one left off - the produc
> t
>being sent at the time is not resent - and it appears that a few products just
>after that product may be missing.  Any ideas?
>
>
>--
>Dr. Harry Edmon                        E-MAIL: address@hidden
>206-543-0547                           address@hidden
>Dept of Atmospheric Sciences   FAX:    206-543-0308
>University of Washington, Box 351640, Seattle, WA 98195-1640
>

Harry,

Anne may have some ideas on why the RPC is timing out. You can
increase the timeout with the -t flag to rpc.ldmd....but
it sounds bad that two local machines are having a timeout.

Are the missing products "CONDUIT" products, or another feed?
If the missing prods are CONDUIT, then the point of discontinuity
might result from the order which the products were received from the split 
requests. When the LDM reconnects, it would request "from" the timestamp
of the latest product received of that feedtype - which may be more
recent for one part of the split request than another. If not CONDUIT,
then I don't have a quick guess, unless it was fore something like
the craft feed where products might be injected at different hosts
in the same feed- again creating a time continuity between
the same feedtype products with different sequencing.

Steve Chiswell