DataONE Tasks: Issueshttps://redmine.dataone.org/https://redmine.dataone.org/favicon.ico2020-08-06T00:06:07ZDataONE Tasks
Redmine CN REST - Bug #8867 (New): CNCore.listChecksumAlgorithms() returns incorrect listhttps://redmine.dataone.org/issues/88672020-08-06T00:06:07ZMatthew Jonesjones@nceas.ucsb.edu
<p>The definition of the ChecksumAlgorithm type in SystemMetadata allows any checksum algorithm listed in the Library of Congress vocab. But the current CNCore.listChecksumAlgorithms() implementation only returns two, MD5 and SHA-1. Need to correct this to include the full list of supported algorithms (see <a href="http://id.loc.gov/vocabulary/preservation/cryptographicHashFunctions.html">http://id.loc.gov/vocabulary/preservation/cryptographicHashFunctions.html</a>).</p>
<p>The implementation of this is in a property file, which needs to be updated with the correct list. The file (d1_cn_rest/src/test/resources/org/dataone/configuration/node.properties) currently contains:</p>
<p><code>cn.checksumAlgorithmList=SHA-1;MD5</code></p>
<p>But it should contain all of the other valid algorithms as well from the LoC.</p>
Member Nodes - Task #8829 (New): get DKAN connected to GMNhttps://redmine.dataone.org/issues/88292019-07-23T16:41:33ZAmy Forresteraforres4@utk.edu
<p>Matt J talked to Carrie -- They recently installed DKAN, and are now having trouble programatically uploading to GMN as Ed had been doing. She was interested in MetacatUI and that there could be a web-based form for uploading content. NKN was unaware that this might be possible with GMN and Metacat. She had lots of good comments about our new service models too. We should definitely follow up.</p>
<p>At a minimum we need to help them get DKAN connected to GMN, as none of their new content is making it into GMN.</p>
Infrastructure - Bug #8696 (New): double indexing of a resource map and another not processed bec...https://redmine.dataone.org/issues/86962018-09-12T00:18:51ZRob Nahfrnahf@epscor.unm.edu
<p>In production, the ORE 'a1a0e96a-3cde-4f3c-829c-29650b09f22b' was not processed because a member was also referenced by the ORE it obsoleted, 'dc39515e-440b-4673-9f63-962c7374bf48'. The task failed without being requeued. Below is the log output.</p>
<pre>rnahf@cn-orc-1:/var/log/dataone/index$ grep a1a0e96a-3cde-4f3c-829c-29650b09f22b cn-index-processor-daemon.log.*
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:27,384 (IndexTaskProcessor:saveTask:865) IndexTaskProcess.saveTask save the index task a1a0e96a-3cde-4f3c-829c-29650b09f22b
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:27,384 (IndexTaskProcessor:getNextIndexTask:610) Start of indexing pid: a1a0e96a-3cde-4f3c-829c-29650b09f22b
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:34,832 (IndexTaskProcessor:getNextIndexTask:664) the original index task - IndexTask [id=18085996, pid=a1a0e96a-3cde-4f3c-829c-29650b09f22b, formatid=http://www.openarchives.org/ore/terms, objectPath=/var/metacat/data/autogen.2018091015425874434.1, dateSysMetaModified=1536087134490, deleted=false, taskModifiedDate=1536619467383, priority=3, status=IN PROCESS]
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:34,832 (IndexTaskProcessor:getNextIndexTask:671) the new index task - IndexTask [id=18085996, pid=a1a0e96a-3cde-4f3c-829c-29650b09f22b, formatid=http://www.openarchives.org/ore/terms, objectPath=/var/metacat/data/autogen.2018091015425874434.1, dateSysMetaModified=1536087134490, deleted=false, taskModifiedDate=1536619467383, priority=3, status=IN PROCESS]
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:34,901 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:35,402 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:35,902 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:36,402 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:36,903 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:37,403 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:37,903 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:38,403 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:38,904 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:39,404 (IndexTaskProcessor:checkReadinessProcessResourceMap:369) ###################Another resource map is process the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 as well. So the thread to process id a1a0e96a-3cde-4f3c-829c-29650b09f22b has to wait 0.5 seconds.
cn-index-processor-daemon.log.6:[ERROR] 2018-09-10 22:44:39,904 (IndexTaskProcessor:checkReadinessProcessResourceMap:384) We waited for another thread to finish indexing a resource map which has the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 for a while. Now we quited and can't index id a1a0e96a-3cde-4f3c-829c-29650b09f22b
cn-index-processor-daemon.log.6:[ERROR] 2018-09-10 22:44:39,904 (IndexTaskProcessor:processTask:297) Unable to process task for pid: a1a0e96a-3cde-4f3c-829c-29650b09f22b
cn-index-processor-daemon.log.6:java.lang.Exception: We waited for another thread to finish indexing a resource map which has the referenced id ee73cf7f-1005-4b89-bab9-3a7fa01d27c6 for a while. Now we quited and can't index id a1a0e96a-3cde-4f3c-829c-29650b09f22b
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:39,906 (IndexTaskProcessor:newOrFailedIndexTaskExists:890) IndexTaskProcess.newOrFailedIndexTaskExists for id a1a0e96a-3cde-4f3c-829c-29650b09f22b
rnahf@cn-orc-1:/var/log/dataone/index$ date
Tue Sep 11 23:46:56 UTC 2018
rnahf@cn-orc-1:/var/log/dataone/index$ grep dc39515e-440b-4673-9f63-962c7374bf48 cn-index-processor-daemon.log.*
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:12,133 (HZEventFilter:filter:127) HZEventFilter.filter - the system metadata for the index event shows shows dc39515e-440b-4673-9f63-962c7374bf48 having a newer version than the SOLR server. So this event should be granted for indexing.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:13,347 (HZEventFilter:filter:127) HZEventFilter.filter - the system metadata for the index event shows shows dc39515e-440b-4673-9f63-962c7374bf48 having a newer version than the SOLR server. So this event should be granted for indexing.
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:18,677 (IndexTaskProcessor:saveTask:865) IndexTaskProcess.saveTask save the index task dc39515e-440b-4673-9f63-962c7374bf48
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:18,677 (IndexTaskProcessor:getNextIndexTask:610) Start of indexing pid: dc39515e-440b-4673-9f63-962c7374bf48
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:25,783 (IndexTaskProcessor:getNextIndexTask:664) the original index task - IndexTask [id=18086020, pid=dc39515e-440b-4673-9f63-962c7374bf48, formatid=http://www.openarchives.org/ore/terms, objectPath=/var/metacat/data/autogen.2017072514144216470.1, dateSysMetaModified=1536087137440, deleted=false, taskModifiedDate=1536619458675, priority=3, status=IN PROCESS]
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:25,783 (IndexTaskProcessor:getNextIndexTask:671) the new index task - IndexTask [id=18086020, pid=dc39515e-440b-4673-9f63-962c7374bf48, formatid=http://www.openarchives.org/ore/terms, objectPath=/var/metacat/data/autogen.2017072514144216470.1, dateSysMetaModified=1536087137440, deleted=false, taskModifiedDate=1536619458675, priority=3, status=IN PROCESS]
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:27,221 (IndexTaskProcessor:processTask:284) *********************start to process update index task for dc39515e-440b-4673-9f63-962c7374bf48 in thread 20
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:43,513 (IndexTaskProcessor:processTask:288) *********************end to process update index task for dc39515e-440b-4673-9f63-962c7374bf48 in thread 20
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:44:43,519 (IndexTaskProcessor:processTask:315) Indexing complete for pid: dc39515e-440b-4673-9f63-962c7374bf48
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:46:11,604 (IndexTaskProcessor:saveTask:865) IndexTaskProcess.saveTask save the index task dc39515e-440b-4673-9f63-962c7374bf48
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:46:11,604 (IndexTaskProcessor:getNextIndexTask:610) Start of indexing pid: dc39515e-440b-4673-9f63-962c7374bf48
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:46:18,731 (IndexTaskProcessor:getNextIndexTask:664) the original index task - IndexTask [id=18086015, pid=dc39515e-440b-4673-9f63-962c7374bf48, formatid=http://www.openarchives.org/ore/terms, objectPath=/var/metacat/data/autogen.2017072514144216470.1, dateSysMetaModified=1536087137440, deleted=false, taskModifiedDate=1536619571603, priority=3, status=IN PROCESS]
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:46:18,732 (IndexTaskProcessor:getNextIndexTask:671) the new index task - IndexTask [id=18086015, pid=dc39515e-440b-4673-9f63-962c7374bf48, formatid=http://www.openarchives.org/ore/terms, objectPath=/var/metacat/data/autogen.2017072514144216470.1, dateSysMetaModified=1536087137440, deleted=false, taskModifiedDate=1536619571603, priority=3, status=IN PROCESS]
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:46:20,164 (IndexTaskProcessor:processTask:284) *********************start to process update index task for dc39515e-440b-4673-9f63-962c7374bf48 in thread 20
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:46:36,252 (IndexTaskProcessor:processTask:288) *********************end to process update index task for dc39515e-440b-4673-9f63-962c7374bf48 in thread 20
cn-index-processor-daemon.log.6:[ INFO] 2018-09-10 22:46:36,255 (IndexTaskProcessor:processTask:315) Indexing complete for pid: dc39515e-440b-4673-9f63-962c7374bf48
cn-index-processor-daemon.log.7:[ INFO] 2018-09-10 21:44:09,798 (HZEventFilter:compareRaplicaList:256) HZEventFilter.compareReplicaList - the system metadata for the index event shows dc39515e-440b-4673-9f63-962c7374bf48 having the same replica list as the solr doc.
cn-index-processor-daemon.log.7:[ INFO] 2018-09-10 21:44:09,798 (HZEventFilter:filter:164) HZEventFilter.filter - the system metadata for the index event shows dc39515e-440b-4673-9f63-962c7374bf48 having the same modification date as the SOLR server. Also both have the same replica list. So this event has been filtered out for indexing (no indexing).
rnahf@cn-orc-1:/var/log/dataone/index$
</pre> Infrastructure - Bug #8500 (New): Geohash not calculated properlyhttps://redmine.dataone.org/issues/85002018-03-14T17:06:52ZDave Vieglaisdave.vieglais@gmail.com
<p>The metadata with pid = <code>{39A912EE-E2DC-4F50-A3DE-C0EF04BC1E88}</code> has bounding coords correctly indexed:</p>
<pre> <float name="eastBoundCoord">166.657</float>
<float name="westBoundCoord">-178.378</float>
<float name="southBoundCoord">-14.5596</float>
<float name="northBoundCoord">28.4536</float>
</pre>
<p>but the computed geohash is wrong:</p>
<pre> <arr name="geohash_9">
<str>ec5zd8st0</str>
</arr>
<arr name="geohash_1">
<str>e</str>
</arr>
<arr name="geohash_2">
<str>ec</str>
</arr>
<arr name="geohash_3">
<str>ec5</str>
</arr>
<arr name="geohash_4">
<str>ec5z</str>
</arr>
<arr name="geohash_5">
<str>ec5zd</str>
</arr>
<arr name="geohash_6">
<str>ec5zd8</str>
</arr>
<arr name="geohash_7">
<str>ec5zd8s</str>
</arr>
<arr name="geohash_8">
<str>ec5zd8st</str>
</arr>
</pre>
<p>Investigate if this is a systemic issue or peculiar to certain types of metadata or representation of coordinates within the metadata.</p>
Infrastructure - Story #8173 (New): add checks for retrograde systemMetadata changeshttps://redmine.dataone.org/issues/81732017-09-01T19:42:33ZRob Nahfrnahf@epscor.unm.edu
<p>with the ability to prioritize and the introduction of parallelized index task processing, the effective queue is not guaranteed to be time-ordered. If there are two valid system metadata changes resulting in two tasks and the second change hits the index first, the earlier task should be rejected, as its changes are out of date.</p>
Python GMN - Bug #7740 (New): GMN fails to write system metadata during a refresh under unknown c...https://redmine.dataone.org/issues/77402016-04-14T14:56:22ZMark Servillamark.servilla@gmail.com
<p>Some MNs (NMEPSCOR and TERN, for example) are reporting that GMN fails to write system metadata during a refresh. It is not clear under what conditions this occurs.</p>
<p>2016-03-24 06:00:15 ERROR SysMetaRefresher process_system_metadata_refresh_queue 30401 140171679168320 System Metadata update failed with internal exception:<br>
Traceback (most recent call last):<br>
File "/var/local/dataone/gmn/local/lib/python2.7/site-packages/service/mn/management/commands/process_system_metadata_refresh_queue.py", line 161, in <em>process_refresh_task<br>
self._refresh(task)<br>
File "/var/local/dataone/gmn/local/lib/python2.7/site-packages/service/mn/management/commands/process_system_metadata_refresh_queue.py", line 174, in _refresh<br>
self._update_sys_meta(sys_meta)<br>
File "/var/local/dataone/gmn/local/lib/python2.7/site-packages/service/mn/management/commands/process_system_metadata_refresh_queue.py", line 224, in _update_sys_meta<br>
mn.auth.set_access_policy(pid, sys_meta.accessPolicy)<br>
File "/var/local/dataone/gmn/lib/python2.7/site-packages/service/mn/auth.py", line 164, in set_access_policy<br>
with mn.sysmeta_store.sysmeta(pid, sci_obj.serial_version) as sysmeta:<br>
File "/var/local/dataone/gmn/lib/python2.7/site-packages/service/mn/sysmeta_store.py", line 97, in __init</em>_<br>
with open(sysmeta_path, 'rb') as f:<br>
IOError: [Errno 2] No such file or directory: '/var/local/dataone/gmn/lib/python2.7/site-packages/service/./stores/sysmeta/112/129/aekos.org.au%2Fcollection%2Fnsw.gov.au%2Fnsw_atlas%2Fvis_flora_module%2FP_ADHO4FB3.20150515.5'</p>
Python GMN - Bug #7738 (New): GMN perpetually retries system metadata updates after failureshttps://redmine.dataone.org/issues/77382016-04-14T14:26:33ZMark Servillamark.servilla@gmail.com
<p>It is believed that GMN perpetually attempts to update system metadata even when the system metadata update processing fails for specific system metadata objects. More sane logic needs to be implemented so that continuous attempts to update system metadata (and copious calls to the CN for system metadata) are averted.</p>
Infrastructure - Bug #7601 (New): CN checksum inconsistencieshttps://redmine.dataone.org/issues/76012016-01-21T20:09:28ZBen Leinfelderleinfelder@nceas.ucsb.edu
<p>While transferring test data from production to the sandbox-2 environment I noticed failures for a group of pids.<br>
I'll use an example to illustrate (doi_10.5066_F71C1TV7)<br>
<a href="https://cn.dataone.org/cn/v2/meta/doi_10.5066_F71C1TV7">https://cn.dataone.org/cn/v2/meta/doi_10.5066_F71C1TV7</a><br>
CN.SystemMetadata reports checksum as:<br>
<br>
46178da6192263921eb755940d716725</p>
<p>Whereas calculating it from disk gives this:<br>
<br>
MD5(/var/metacat/documents/autogen.2013062508395355978.1)= efc11787f789b45db29999fb4bd8d745</p>
<p>The byte size is also off.<br>
<br>
16739<br>
<br>
On disk:<br>
<br>
-rw-r--r-- 1 tomcat7 tomcat7 16529 Jun 25 2013 /var/metacat/documents/autogen.2013062508395355978.1</p>
<p>There are ~70 similar pids that have issues (perhaps more) from our test corpus. They are from the now defunct USGS MN.</p>
<p>I'm not sure what our strategy is since the original MN is not online any longer so we cannot get the "original" bytes from that.</p>
Member Nodes - Task #7046 (New): Certificate DC=org,DC=dataone,CN=osu.piscoweb.org expires in Pro...https://redmine.dataone.org/issues/70462015-04-15T19:06:20ZDave Vieglaisdave.vieglais@gmail.com
<p>Client certificate expires on May 17.</p>
<p>Need to:</p>
<ul>
<li>contact the Node Administrator and prepare for updating the certificate.</li>
<li>generate the certificate (Mark, Dave, or Chris)</li>
<li>guide the MN admin for certificate installation</li>
</ul>
<p><a href="https://repository.dataone.org/software/tools/trunk/ca/calendar.html">https://repository.dataone.org/software/tools/trunk/ca/calendar.html</a></p>
Infrastructure - Bug #4674 (New): Ask Judith, Mike and Virgina Perez.2.1 to obsolete those pids w...https://redmine.dataone.org/issues/46742014-03-31T18:02:41ZJing Taotao@nceas.ucsb.edu
<p>doi:10.5063/AA/Virginia Perez.2.1<br>
judith botha.1.1<br>
judith botha.2.1<br>
judith kruger.1.1<br>
judith kruger.2.1<br>
judith kruger.3.1<br>
judith kruger.4.1<br>
judith kruger.5.1<br>
doi:10.6085/AA/ SHLX00_XXXITV2XLSR03_20111128.40.1 (PISCO)</p>
Infrastructure - Task #4210 (Testing): Metacat does not set serialVersion correctly in CNodeServi...https://redmine.dataone.org/issues/42102013-12-20T15:22:50ZChris Jonescjones@nceas.ucsb.edu
<p>For DATA and METADATA, CNodeService.archive() and D1NodeService.archive(), respectively, don't increment the serialVersion field. Check this for delete() as well. D1NodeService delegates to DocumentImpl to call the HZ put() method, so the fix needs to be there, and in CNodeService.</p>
Member Nodes - MNDeployment #3521 (Operational): SEAD Member Nodehttps://redmine.dataone.org/issues/35212013-01-25T21:19:12ZRebecca Koskelarkoskela@unm.edu
<p>SEAD (Sustainable Environment - Actionable Data), another DataNet, would like to become a DataONE Member Node<br>
(<a href="http://sead-data.net/">http://sead-data.net/</a>)</p>
Infrastructure - Bug #3492 (In Progress): Invalid PIDs in production (whitespace)https://redmine.dataone.org/issues/34922013-01-17T15:13:44ZDave Vieglaisdave.vieglais@gmail.com
<p>Recording this for future reference. </p>
<p>There are nine PIDs in the production environment that contain whitespace. This appears to have no functional effect - sysmeta and objects can be retrieved so no action is required other than to ensure no more sneak in.</p>
<p>The PIDs in question are:</p>
<a name="guid"></a>
<h2 > guid <a href="#guid" class="wiki-anchor">¶</a></h2>
<p>doi:10.5063/AA/Virginia Perez.2.1<br>
judith kruger.3.1<br>
judith kruger.4.1<br>
judith botha.1.1<br>
judith kruger.1.1<br>
judith kruger.2.1<br>
judith kruger.5.1<br>
judith botha.2.1<br>
resourceMap_Lin Cheng-Jung.1.1<br>
resourceMap_Lin Cheng-Jung.1.2<br>
resourceMap_Lin Cheng-Jung.1.3<br>
Lin Cheng-Jung.1.1<br>
Lin Cheng-Jung.1.2<br>
Lin Cheng-Jung.1.3<br>
doi:10.6085/AA/ SHLX00_XXXITV2XLSR03_20111128.40.1</p>
Member Nodes - MNDeployment #3118 (Operational): Dryad Member Nodehttps://redmine.dataone.org/issues/31182012-08-05T17:05:51ZDave Vieglaisdave.vieglais@gmail.com
<p>The Dryad MN will operate as a tier 1 member node.</p>
<p>Base_URL: <a href="https://datadryad.org/mn">https://datadryad.org/mn</a><br>
Node_ID: urn:node:DRYAD<br>
Deployment_Contact: Ryan Scherle<br>
Software: Custom on modified DSpace (Dryad)<br>
Target_Tier: 1<br>
Content_Volume_GB: 20</p>
Requirements - Requirement #592 (New): DataONE needs to synchronize metadata between MNs and CNshttps://redmine.dataone.org/issues/5922010-04-23T00:53:56ZMatthew Jonesjones@nceas.ucsb.edu
<p><a class="wiki-page new" href="https://redmine.dataone.org/projects/d1req/wiki/DataONE">DataONE</a> functions by having CNs that provide a central index of all metadata in the system. This allows for rapid search of the whole network while maintaining autonomy of MNs.</p>