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    <title>CKAN: Ticket #2530: DataHub purge fails on some revisions</title>
    <link>http://localhost/ticket/2530</link>
    <description>&lt;p&gt;
See &lt;a class="ext-link" href="http://datahub.io/ckan-admin/trash"&gt;&lt;span class="icon"&gt;​&lt;/span&gt;http://datahub.io/ckan-admin/trash&lt;/a&gt; and try to purge revisions (*not* datasets). It will fail on some of the revisions with errors like:
&lt;/p&gt;
&lt;p&gt;
Problem purging revision 391db9e8-df57-4e0e-8fe6-d4e0c2318344: (&lt;a class="missing wiki"&gt;IntegrityError?&lt;/a&gt;) update or delete on table "revision" violates foreign key constraint "group_extra_revision_revision_id_fkey" on table "group_extra_revision" DETAIL: Key (id)=(391db9e8-df57-4e0e-8fe6-d4e0c2318344) is still referenced from table "group_extra_revision". 'DELETE FROM revision WHERE revision.id = %(id)s' {'id': u'391db9e8-df57-4e0e-8fe6-d4e0c2318344'}
&lt;/p&gt;
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      <link>http://localhost/ticket/2530</link>
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    <item>
      
        <dc:creator>kindly</dc:creator>

      <pubDate>Mon, 02 Jul 2012 22:31:20 GMT</pubDate>
      <title>milestone changed</title>
      <link>http://localhost/ticket/2530#comment:1</link>
      <guid isPermaLink="false">http://localhost/ticket/2530#comment:1</guid>
      <description>
          &lt;ul&gt;
            &lt;li&gt;&lt;strong&gt;milestone&lt;/strong&gt;
                changed from &lt;em&gt;ckan-v1.8&lt;/em&gt; to &lt;em&gt;ckan-v1.9&lt;/em&gt;
            &lt;/li&gt;
          &lt;/ul&gt;
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