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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-34351] Fix intermittent alter() failures when upgrading unique indexes.</title>
                <link>https://jira.mongodb.org/browse/SERVER-34351</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Unique index upgrade requires the &lt;tt&gt;app_metadata&lt;/tt&gt; stored for the index&apos;s WT table to be updated using the &lt;tt&gt;alter()&lt;/tt&gt; command. For a successful execution, &lt;tt&gt;alter()&lt;/tt&gt; requires an exclusive access to the underlying file, otherwise it fails with an &lt;tt&gt;EBUSY&lt;/tt&gt; error. This exclusive access is not granted if there are cursors opened on the file.&lt;/p&gt;

&lt;p&gt;Our current implementation fails intermittently when other operations on the index race with the index upgrade process.&lt;/p&gt;

&lt;p&gt;This ticket tracks the work needed to implement an &lt;tt&gt;alter()&lt;/tt&gt; invocation that deterministically gets this exclusive access and doesn&apos;t fail intermittently with an &lt;tt&gt;EBUSY&lt;/tt&gt; error.&lt;/p&gt;</description>
                <environment></environment>
        <key id="522929">SERVER-34351</key>
            <summary>Fix intermittent alter() failures when upgrading unique indexes.</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="9">Done</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="sulabh.mahajan@mongodb.com">Sulabh Mahajan</reporter>
                        <labels>
                    </labels>
                <created>Fri, 6 Apr 2018 04:12:45 +0000</created>
                <updated>Tue, 6 Dec 2022 03:32:52 +0000</updated>
                            <resolved>Fri, 13 Apr 2018 01:43:31 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1863232" author="sulabh.mahajan" created="Fri, 13 Apr 2018 01:43:18 +0000"  >&lt;p&gt;Closing this ticket because we decided to follow a different approach with how &lt;tt&gt;alter()&lt;/tt&gt; is done.&lt;/p&gt;</comment>
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