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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-29276] Two Phase Drops: Implement collection drop rollback logic</title>
                <link>https://jira.mongodb.org/browse/SERVER-29276</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Before 3.6, collection drops are executed immediately and the collections are removed from the storage upon completion of the user request processing. In 3.6, we defer&#160;the actual collection drops until the replica set �has advanced to or past the optime of the drop operation. This makes it possible to recover the dropped collection in a rollback scenario.&lt;/p&gt;

&lt;p&gt;When the node needs to roll back a collection drop oplog entry, it first finds the entry in the &quot;task list&quot; corresponding to the collection by UUID.  It then renames the drop-pending collection back to its original name (gleaned from the oplog entry), and it removes the entry from the &quot;task list&quot;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="384761">SERVER-29276</key>
            <summary>Two Phase Drops: Implement collection drop rollback logic</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="judah.schvimer@mongodb.com">Judah Schvimer</assignee>
                                    <reporter username="benety.goh@mongodb.com">Benety Goh</reporter>
                        <labels>
                    </labels>
                <created>Thu, 18 May 2017 15:31:07 +0000</created>
                <updated>Mon, 30 Oct 2023 23:16:41 +0000</updated>
                            <resolved>Thu, 29 Jun 2017 15:52:45 +0000</resolved>
                                                    <fixVersion>3.5.10</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1610517" author="xgen-internal-githook" created="Thu, 29 Jun 2017 15:42:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;judahschvimer&apos;, u&apos;name&apos;: u&apos;Judah Schvimer&apos;, u&apos;email&apos;: u&apos;judah@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29276&quot; title=&quot;Two Phase Drops: Implement collection drop rollback logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29276&quot;&gt;&lt;del&gt;SERVER-29276&lt;/del&gt;&lt;/a&gt; rolls back drop pending collections&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/103256372fc4f4cec1c736482c1ed520ee0de290&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/103256372fc4f4cec1c736482c1ed520ee0de290&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1605148" author="xgen-internal-githook" created="Fri, 23 Jun 2017 13:56:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;judahschvimer&apos;, u&apos;name&apos;: u&apos;Judah Schvimer&apos;, u&apos;email&apos;: u&apos;judah@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29276&quot; title=&quot;Two Phase Drops: Implement collection drop rollback logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29276&quot;&gt;&lt;del&gt;SERVER-29276&lt;/del&gt;&lt;/a&gt; use OplogEntry class in rs_rollback.cpp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e987b3cbc59352df543001ab35d94b3f963adb37&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e987b3cbc59352df543001ab35d94b3f963adb37&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1601921" author="xgen-internal-githook" created="Tue, 20 Jun 2017 17:50:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;judahschvimer&apos;, u&apos;name&apos;: u&apos;Judah Schvimer&apos;, u&apos;email&apos;: u&apos;judah@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29276&quot; title=&quot;Two Phase Drops: Implement collection drop rollback logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29276&quot;&gt;&lt;del&gt;SERVER-29276&lt;/del&gt;&lt;/a&gt; adds functions to DropPendingCollectionReaper for rollback&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/da2e51bd03fd4e6a519eb170e301af36c8b8e420&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/da2e51bd03fd4e6a519eb170e301af36c8b8e420&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1597986" author="xgen-internal-githook" created="Thu, 15 Jun 2017 14:30:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;judahschvimer&apos;, u&apos;name&apos;: u&apos;Judah Schvimer&apos;, u&apos;email&apos;: u&apos;judah@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29276&quot; title=&quot;Two Phase Drops: Implement collection drop rollback logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29276&quot;&gt;&lt;del&gt;SERVER-29276&lt;/del&gt;&lt;/a&gt; adds renameCollection function to StorageInterface&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f39cdb6b207f8b2e855b3b89cc060c833bb45372&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f39cdb6b207f8b2e855b3b89cc060c833bb45372&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1597947" author="xgen-internal-githook" created="Thu, 15 Jun 2017 14:06:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;judahschvimer&apos;, u&apos;name&apos;: u&apos;Judah Schvimer&apos;, u&apos;email&apos;: u&apos;judah@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29276&quot; title=&quot;Two Phase Drops: Implement collection drop rollback logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29276&quot;&gt;&lt;del&gt;SERVER-29276&lt;/del&gt;&lt;/a&gt; make renameCollection error codes consistent&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e66f19b24863e276ec0ddcdc1bf91dd4ceffa22a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e66f19b24863e276ec0ddcdc1bf91dd4ceffa22a&lt;/a&gt;&lt;/p&gt;</comment>
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