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    <title>MongoDB Jira</title>
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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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            <title>[SERVER-69128] Server-side document hashing</title>
                <link>https://jira.mongodb.org/browse/SERVER-69128</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When verifying clusters for logical consistency as part of the verifier project, we can speed the process up by computing hashes server-side instead of transferring full documents over the network to the verifier process and computing the hashes there. Verification speed matters, as it&apos;s on the critical path for reducing downtime for MongoDB migrations.&lt;/p&gt;

&lt;p&gt;One potential option could be to introduce a new operator in the aggregation pipeline.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2121617">SERVER-69128</key>
            <summary>Server-side document hashing</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="3">Duplicate</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="alex.komyagin@mongodb.com">Alexander Komyagin</reporter>
                        <labels>
                    </labels>
                <created>Wed, 24 Aug 2022 21:19:21 +0000</created>
                <updated>Mon, 5 Dec 2022 23:48:29 +0000</updated>
                            <resolved>Tue, 13 Sep 2022 15:21:11 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4822749" author="JIRAUSER1257467" created="Tue, 13 Sep 2022 15:21:12 +0000"  >&lt;p&gt;Closing as duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30359&quot; title=&quot;Add a more generalized $hash expression&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30359&quot;&gt;SERVER-30359&lt;/a&gt;&#160;&lt;/p&gt;

&lt;p&gt;Note: &lt;em&gt;We previously introduced a new &lt;tt&gt;$toHashedIndexKey&lt;/tt&gt; expression via &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-49214&quot; title=&quot;Add $toHashedIndexKey expression&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49214&quot;&gt;&lt;del&gt;SERVER-49214&lt;/del&gt;&lt;/a&gt; but it looks like we did not document it. We should do so as there are use cases for it and there is lack of awareness about the existing expression.&lt;/em&gt;&lt;/p&gt;</comment>
                            <comment id="4775135" author="alex.komyagin@10gen.com" created="Wed, 24 Aug 2022 21:27:06 +0000"  >&lt;p&gt;cc &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=judah.schvimer%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;judah.schvimer@mongodb.com&quot;&gt;judah.schvimer@mongodb.com&lt;/a&gt;&#160;&lt;/p&gt;</comment>
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