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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-37733] Optimize rollback via refetch of dropIndexes using the index catalog versioning</title>
                <link>https://jira.mongodb.org/browse/SERVER-37733</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Rollback via recover to a stable timestamp should save indexes from the ident reaper, if the reaper has not already run on that index, meaning dropIndexes occurred far enough in the past that PIT reads can no longer access the index.&lt;/p&gt;

&lt;p&gt;I am not sure what kind of timestamping or history cleanup occurs around rollback via refetch, whether indexes can be saved from the reaper.&lt;/p&gt;

&lt;p&gt;This must be done after &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-38548&quot; title=&quot;Leverage the KVDropPendingIdentReaper and TimestampMonitor to make index drops two-phase&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-38548&quot;&gt;&lt;del&gt;SERVER-38548&lt;/del&gt;&lt;/a&gt; introduces two-phase index drop.&lt;/p&gt;</description>
                <environment></environment>
        <key id="623555">SERVER-37733</key>
            <summary>Optimize rollback via refetch of dropIndexes using the index catalog versioning</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                    </labels>
                <created>Wed, 24 Oct 2018 17:06:48 +0000</created>
                <updated>Tue, 6 Dec 2022 03:14:58 +0000</updated>
                            <resolved>Tue, 16 Jul 2019 19:29:27 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="2329413" author="benety.goh" created="Tue, 16 Jul 2019 19:29:27 +0000"  >&lt;p&gt;The work is done in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-38548&quot; title=&quot;Leverage the KVDropPendingIdentReaper and TimestampMonitor to make index drops two-phase&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-38548&quot;&gt;&lt;del&gt;SERVER-38548&lt;/del&gt;&lt;/a&gt;. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31130&quot; title=&quot;Add javascript test to exercise simple rollback of every supported operation type&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31130&quot;&gt;&lt;del&gt;SERVER-31130&lt;/del&gt;&lt;/a&gt; introduced rollback test coverage of index builds in &lt;a href=&quot;https://github.com/mongodb/mongo/blob/b5d728ae190cd44c3a6c8a0b036b558bf124bbaf/jstests/replsets/rollback_all_op_types.js#L87&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;rollback_all_optypes.js&lt;/a&gt;.&lt;/p&gt;</comment>
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