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    <title>MongoDB Jira</title>
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    <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-32982] Remove rolled back index builds after rollback to a checkpoint</title>
                <link>https://jira.mongodb.org/browse/SERVER-32982</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;On primaries, we timestamp the beginning of an index build with a timestamp before the &quot;createIndexes&quot; oplog entry. Thus after we roll back to a checkpoint, the index with ready: false may still be around. If we crash and restart, WT will then rebuild the index, even though it doesn&apos;t exist on some nodes.&lt;/p&gt;</description>
                <environment></environment>
        <key id="488994">SERVER-32982</key>
            <summary>Remove rolled back index builds after rollback to a checkpoint</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="3">Duplicate</resolution>
                                        <assignee username="william.schultz@mongodb.com">William Schultz</assignee>
                                    <reporter username="judah.schvimer@mongodb.com">Judah Schvimer</reporter>
                        <labels>
                            <label>rollback-functional</label>
                    </labels>
                <created>Mon, 29 Jan 2018 19:48:39 +0000</created>
                <updated>Fri, 16 Feb 2018 16:05:21 +0000</updated>
                            <resolved>Fri, 16 Feb 2018 16:05:11 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1808094" author="daniel.gottlieb@10gen.com" created="Fri, 16 Feb 2018 16:05:11 +0000"  >&lt;p&gt;Oops, I forgot this ticket existed. We&apos;re changing the solution to push this into storage documented in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33359&quot; title=&quot;Have RTT storage engines manage rolling back incomplete index builds.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33359&quot;&gt;&lt;del&gt;SERVER-33359&lt;/del&gt;&lt;/a&gt;. That solution requires a little help from replication, but most importantly no longer relies on op observers and changing when replication recovery truncates the oplog.&lt;/p&gt;</comment>
                            <comment id="1803035" author="judah.schvimer" created="Mon, 12 Feb 2018 17:13:44 +0000"  >&lt;p&gt;This can likely be done in conjunction with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29933&quot; title=&quot;Roll Back to Checkpoint: Notify subsystems that rely on OpObservers to maintain state to rebuild state from data on disk&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29933&quot;&gt;&lt;del&gt;SERVER-29933&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="1789781" author="judah.schvimer" created="Tue, 30 Jan 2018 21:27:56 +0000"  >&lt;p&gt;This can result in inconsistent index definitions across nodes.&lt;/p&gt;</comment>
                            <comment id="1789776" author="spencer" created="Tue, 30 Jan 2018 21:23:32 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=judah.schvimer&quot; class=&quot;user-hover&quot; rel=&quot;judah.schvimer&quot;&gt;judah.schvimer&lt;/a&gt; Does this result in inconsistent index definitions across nodes?  Or just in unnecessary work done to build the index which is then immediately thrown out?&lt;/p&gt;</comment>
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