Re: [ldm-users] dates in ldmd log file

  • To: Donna Cote <d-cote@xxxxxxxx>
  • Subject: Re: [ldm-users] dates in ldmd log file
  • From: Steve Emmerson <emmerson@xxxxxxxx>
  • Date: Tue, 14 Apr 2015 16:31:42 -0600
On Tue, Apr 14, 2015 at 4:02 PM, Donna Cote <d-cote@xxxxxxxx> wrote:

> Steve, the description for the log file template says the date is the
> "product creation time" but this is a log entry simply telling me that this
> host (namely  has made a REQUEST for data from the CONDUIT
> feed.
> So, what does this timestamp refer to? That's the basic question.

You're quite right. For the benefit of others, here's the original log file

Mar 31 00:54:25 ldm1[24576] NOTE: Starting
> Up(6.11.7/5): 20150312170024.533 TS_ENDT {{CONDUIT,
> "^data/nccf/com/gfs/prod/gfs.+/gfs.t..z.pgrbf.+grib2.+"}}

 I didn't notice the "Starting Up" field. My bad.

The "20150312170024.533" field isn't the creation-time of a data-product;
rather, it's the "from" time in the request from the notifyme(1) process
running on host "". Downstream LDM processes such as
notifyme(1) specify "from" and "to" times in their request in order to
limit the interval over which they'll receive data. Typically, the "from"
time is an hour ago and the "to" time is the end-of-time.

I'd guess that the clock on that host needs some serious adjusting.

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