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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Daryl indicated that they were not deduplicated in his setup . . . which requires additional investigation. . . . +----------------------------------------------------------------+ * Stonie Cooper UCAR Unidata Program * * Software Engineer III P.O. Box 3000 * * cooper@xxxxxxxx Boulder, CO 80307 * * Unidata WWW Service http://www.unidata.ucar.edu/ * +----------------------------------------------------------------+ On Wed, Mar 29, 2023 at 10:18 AM Sebenste, Gilbert <sebensteg@xxxxxxx> wrote: > Because that shouldn't be the LDM's issue. If the NWS is inconsistent > sending out products, that should be on them to fix, not Stonie or anyone > else. > In either case, what is the issue? Again, Stonie showed that the > duplication of products were stopped...so the LDM is, in fact, doing what > you want. > > Gilbert > > Gilbert Sebenste > Meteorology Support Analyst > > > > -----Original Message----- > From: Herzmann, Daryl E [AGRON] <akrherz@xxxxxxxxxxx> > Sent: Wednesday, March 29, 2023 10:11 AM > To: Stonie Cooper <cooper@xxxxxxxx> > Cc: Sebenste, Gilbert <sebensteg@xxxxxxx>; Mike Zuranski < > mzuranski@xxxxxxxx>; LDM <ldm-users@xxxxxxxxxxxxxxxx>; NOAAPORT < > noaaport@xxxxxxxxxxxxxxxx> > Subject: Re: [ldm-users] [External] Re: [noaaport] NOAAport/SBN outage as > of 13:30Z > > Stonie, > > Good grief, then fix LDM then to stop assuming 11 bytes to ignore and make > it forgive the lack of a space. Why punt this issue to every IDD > downstream user, when it can be fixed it at the source? > > daryl > > ________________________________________ > From: Stonie Cooper <cooper@xxxxxxxx> > Sent: Wednesday, March 29, 2023 10:06 AM > To: Herzmann, Daryl E [AGRON] > Cc: Sebenste, Gilbert; Mike Zuranski; LDM; NOAAPORT > Subject: Re: [ldm-users] [External] Re: [noaaport] NOAAport/SBN outage as > of 13:30Z > > I'd also like to see the ICD that says there is supposed to be a space > after the artificially applied sequence number. I can relate equal numbers > of met data users that complain about the existence or absence of this > particular Alden artifact, when in the end, just make your decoder > resilient to accept either. > +----------------------------------------------------------------+ > * Stonie Cooper UCAR Unidata Program * > * Software Engineer III P.O. Box 3000 * > * cooper@xxxxxxxx<mailto:cooper@xxxxxxxx> > Boulder, CO 80307 * > * Unidata WWW Service http://www.unidata.ucar.edu/ * > +----------------------------------------------------------------+ > > > On Wed, Mar 29, 2023 at 10:00 AM Herzmann, Daryl E [AGRON] < > akrherz@xxxxxxxxxxx<mailto:akrherz@xxxxxxxxxxx>> wrote: > Howdy Gilbert, > > I'm gonna sound like a grump again, but we need to be very careful about > putting EMWIN data onto the IDD feed. The reason is that the EMWIN and > NOAAPort feeds are not byte-by-byte identical, so LDM has no chance to > properly dedup these products. > > For example, the ADMSDM product was duplicated twice: > > wmo_valid_at | product_origin | > seqnum | size > > ------------------------+-----------------------------------------------+----------+------ > 2023-03-29 13:54:00+00 | exo.aggregatehail.com_v_idd.agron.iastate.edu< > http://exo.aggregatehail.com_v_idd.agron.iastate.edu> | 999 | 742 > 2023-03-29 13:54:00+00 | np2.ssec.wisc.edu_v_idd.agron.iastate.edu< > http://np2.ssec.wisc.edu_v_idd.agron.iastate.edu> | 73462429 | 743 > 2023-03-29 14:07:00+00 | exo.aggregatehail.com_v_idd.agron.iastate.edu< > http://exo.aggregatehail.com_v_idd.agron.iastate.edu> | 999 | 742 > 2023-03-29 14:07:00+00 | leno.unidata.ucar.edu_v_idd.agron.iastate.edu< > http://leno.unidata.ucar.edu_v_idd.agron.iastate.edu> | 73472992 | 743 > (4 rows) > > As a reminder, the LDM MD5 checksum ignores the first 11 bytes of a > product, so the "sequence number" at the top of the product does not matter > for the MD5 calculation. The most common difference between the two feeds > is the presence or absence of CR or LF at the end of the product, but this > does not account for all of the differences. Another difference is the > "Aviation Control Character" that gets stripped out. > > In this case, and importantly to whomever wrote the EMWIN to IDD ingest, > is the missing space character after the sequence number: > > 999^M^M <-- missing space here > NOUS42 KWNO 291407^M^M > ADMSDM^M^M > > This space needs to be there for the 11 byte ignore calculation to be > correct. > > It would be nice that we could turn on this level of redundancy full-time, > but we'd likely need to condition the noaaport + EMWIN ingests to rectify > these differences so that LDM can generate identical MD5 and properly dedup > the feeds. > > daryl > > ________________________________________ > From: ldm-users <ldm-users-bounces@xxxxxxxxxxxxxxxx<mailto: > ldm-users-bounces@xxxxxxxxxxxxxxxx>> on behalf of Sebenste, Gilbert < > sebensteg@xxxxxxx<mailto:sebensteg@xxxxxxx>> > Sent: Wednesday, March 29, 2023 9:18 AM > To: Mike Zuranski > Cc: LDM; NOAAPORT > Subject: Re: [ldm-users] [External] Re: [noaaport] NOAAport/SBN outage as > of 13:30Z > > AllisonHouse just turned on a kludged EMWIN feed to at least get some > IDS|DDPLUS products going again until this outage is over with. They are > sending it to UNIDATA, so they hope it is getting through the system. > > Gilbert Sebenste > Meteorology Support Analyst > > [cid:image001.png@01D9621F.5C34C250] > > From: Mike Zuranski <mzuranski@xxxxxxxx<mailto:mzuranski@xxxxxxxx>> > Sent: Wednesday, March 29, 2023 8:44 AM > To: Sebenste, Gilbert <sebensteg@xxxxxxx<mailto:sebensteg@xxxxxxx>> > Cc: LDM <ldm-users@xxxxxxxxxxxxxxxx<mailto:ldm-users@xxxxxxxxxxxxxxxx>>; > NOAAPORT <noaaport@xxxxxxxxxxxxxxxx<mailto:noaaport@xxxxxxxxxxxxxxxx>> > Subject: [External] Re: [noaaport] NOAAport/SBN outage as of 13:30Z > > CAUTION: This email originated from outside of COD’s system. Do not click > links, open attachments, or respond with sensitive information unless you > recognize the sender and know the content is safe. > > Morning Gilbert, > > I'm seeing the same and am investigating. Thanks for your report. > > Best, > -Mike > > > Mike Zuranski > Data Engineer II > Unidata Program Center > University Corporation for Atmospheric Research > > > On Wed, Mar 29, 2023 at 8:43 AM Sebenste, Gilbert <sebensteg@xxxxxxx > <mailto:sebensteg@xxxxxxx><mailto:sebensteg@xxxxxxx<mailto: > sebensteg@xxxxxxx>>> wrote: > Getting a strong NOAAport/SBN signal here at the College of DuPage, but > outside of literally 6 products since 13:30Z, the feed has been dead. > > This as of 13:42Z. > > Gilbert > > Gilbert Sebenste > Meteorology Support Analyst > [cid:image001.png@01D9621F.5C34C250] > > _______________________________________________ > NOTE: All exchanges posted to Unidata maintained email lists are recorded > in the Unidata inquiry tracking system and made publicly available through > the web. Users who post to any of the lists we maintain are reminded to > remove any personal information that they do not want to be made public. > > > noaaport mailing list > noaaport@xxxxxxxxxxxxxxxx<mailto:noaaport@xxxxxxxxxxxxxxxx><mailto: > noaaport@xxxxxxxxxxxxxxxx<mailto:noaaport@xxxxxxxxxxxxxxxx>> > For list information or to unsubscribe, visit: > https://www.unidata.ucar.edu/mailing_lists/ > _______________________________________________ > NOTE: All exchanges posted to Unidata maintained email lists are recorded > in the Unidata inquiry tracking system and made publicly available through > the web. Users who post to any of the lists we maintain are reminded to > remove any personal information that they do not want to be made public. > > > ldm-users mailing list > ldm-users@xxxxxxxxxxxxxxxx<mailto:ldm-users@xxxxxxxxxxxxxxxx> > For list information or to unsubscribe, visit: > https://www.unidata.ucar.edu/mailing_lists/ >
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