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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-24205] Replicated dbhash command</title>
                <link>https://jira.mongodb.org/browse/SERVER-24205</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, doing a consistency check between replicas involves running &lt;tt&gt;dbHash&lt;/tt&gt; on the instances and comparing them.&lt;/p&gt;

&lt;p&gt;It would be nice to have a check that&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;is quicker&lt;/li&gt;
	&lt;li&gt;can be passed to all replicas, through one command&lt;/li&gt;
	&lt;li&gt;does not lock for writes&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="287679">SERVER-24205</key>
            <summary>Replicated dbhash command</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="daniel.coupal@mongodb.com">Daniel Coupal</reporter>
                        <labels>
                    </labels>
                <created>Wed, 18 May 2016 22:40:23 +0000</created>
                <updated>Tue, 6 Dec 2022 04:25:22 +0000</updated>
                                                                            <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1270001" author="milkie" created="Fri, 20 May 2016 13:30:00 +0000"  >&lt;p&gt;I&apos;m thinking having the dbhash command support a replicated version, where it would put the dbhash into the system log.&lt;br/&gt;
You could run this special replicated dbhash command, and it would calculate the hash on each replica via the oplog, so that each replica would presumably be the same data when the dbhash was calculated.&lt;br/&gt;
Producing a non-locking dbhash calculation is a different feature request and should get a different ticket.  This would be different work in the storage engine.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="244426">SERVER-21939</issuekey>
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            <issuekey id="287063">SERVER-24173</issuekey>
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