<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Hi Thomas,</div><div><br data-mce-bogus="1"></div><div>Indeed, as I've explained we were black-listed in HEASARC for performing too many queries. Tom McGlynn however managed to get the block lifted and I see that we've now successfully harvested HEASARC resources.<br></div><div>HEASARC aside, and as regards the other missing resources I would really have to investigate on a case by case basis but in general what Theresa explained (about resources falling through the cracks in incremental harvests) is a plausible explanation. If a registry updates / deletes or creates a new resource and does not accurately reflect the time-stamp in the OAI-PMH envelope, then records will be missed in incremental harvests and will only be fetched when a full harvest occurs (in the case of Euro-VO once a month).</div><div><br data-mce-bogus="1"></div><div>I think that race conditions are also possible in the design of the OAI-PMH protocol itself (but these can be addressed for practical purposes by using comfortable overlaps in incremental harvests).</div><div><br data-mce-bogus="1"></div><div>There's a report we produce that identifies mismatches (broken down per managed authority) between any two registries and indeed discrepancies of all kinds do exist. I guess that as long as they are kept to a reasonable minimum and only for "recently changed" resources and as long as the different registries eventually converge, it shouldn't matter too much.<br></div><div><br data-mce-bogus="1"></div><div>Cheers,</div><div>Menelaus.</div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Thomas Boch" <thomas.boch@astro.unistra.fr><br><b>To: </b>registry@ivoa.net<br><b>Cc: </b>ops@ivoa.net<br><b>Sent: </b>Monday, March 14, 2016 3:43:45 PM<br><b>Subject: </b>Inconsistency between full searchable registries<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">Hi Registry-enthusiasts,<br> <br> I would like to report on an inconsistency I found between resources available in the EuroVO registry and in the VAO/STScI registry.<br> <br> I am performing daily a full harvesting (through OAI PMH) of the registry in order to retrieve and filter out services of interest to Aladin Desktop. I used to query the STScI registry for this task until I found out some active resources were missing (for instance <tt style="color: rgb(0, 0, 0); font-style: normal; font-variant:
normal; font-weight: normal; letter-spacing: normal; line-height:
normal; orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px;" data-mce-style="color: #000000; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;">ivo://cfa.tdc/hectospec/hectospec_public.ssap.q/ssa</tt><span style="color: rgb(0, 0, 0); font-family: 'Times New Roman';
font-size: medium; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: 1;
word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline
!important; float: none; background-color: rgb(250, 240, 230);" data-mce-style="color: #000000; font-family: 'Times New Roman'; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; display: inline !important; float: none; background-color: #faf0e6;"><span class="Apple-converted-space"></span></span>). I then switched to the EuroVO registry and just found out that some other resources, for instance<tt> </tt> <tt><span style="color: rgb(0, 0, 0); font-size: 12px; font-style:
normal; font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: normal; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 1; word-spacing: 0px; display: inline ! important;
float: none;" data-mce-style="color: #000000; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; display: inline ! important; float: none;">ivo://nasa.heasarc/skyview/skyview</span></tt>, were also missing (but available in the STScI registry). <br> <br> The full list of missing resources for each registry is attached to this message. From a quick look:<br> <br> - STScI registry is mostly missing 1300 VizieR resources<br> <br> - EuroVO registry is mostly missing HEASARC services. Menelaus confirmed me that they had an issue with querying the HEASARC registry.<br> <br> <br> What should I do ? I am not really keen on querying the two registries and merging the results, as I feel this should not be done at my side. I would expect consistency between full registries, at least for resources older than 1 week. Am I missing something ?<br> <br> <br> Cheers,<br> <br> Thomas<br><br></div></div><PRE>This message and any attachments are intended for the use of the addressee or addressees only.
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