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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-29785] shards should not gossip $logicalTime and operationTime if FCV is set to 3.4</title>
                <link>https://jira.mongodb.org/browse/SERVER-29785</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Similar to mongos in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29652&quot; title=&quot;mongos should not gossip $logicalTime until admin.system.keys are created&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29652&quot;&gt;&lt;del&gt;SERVER-29652&lt;/del&gt;&lt;/a&gt;, shards and configs should not gossip $logicalTime if FCV is set to 3.4. &lt;br/&gt;
While its unlikely that client will connect directly we should avoid the scenario when the afterCLusterTime clause is rejected but operationTime is still returned because its hard to address on the client side.&lt;/p&gt;

&lt;p&gt;In mongod the FCV  is available hence the implementation is the following&lt;br/&gt;
1. add a check that FCV == 36 in &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/service_entry_point_mongod.cpp#L484&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/db/service_entry_point_mongod.cpp#L484&lt;/a&gt;&lt;br/&gt;
so the operationTime will be added only in 36 mongod for sharded and standalone RS&lt;/p&gt;

&lt;p&gt;2. add a check that FCV == 36 in &lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/service_entry_point_mongod.cpp#L257-L268&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/db/service_entry_point_mongod.cpp#L257-L268&lt;/a&gt;&lt;br/&gt;
so the operationTime will be added only in 36 mongod for sharded and standalone RS&lt;/p&gt;</description>
                <environment></environment>
        <key id="396769">SERVER-29785</key>
            <summary>shards should not gossip $logicalTime and operationTime if FCV is set to 3.4</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>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="jack.mulrow@mongodb.com">Jack Mulrow</assignee>
                                    <reporter username="misha.tyulenev@mongodb.com">Misha Tyulenev</reporter>
                        <labels>
                    </labels>
                <created>Wed, 21 Jun 2017 20:30:53 +0000</created>
                <updated>Mon, 30 Oct 2023 23:15:49 +0000</updated>
                            <resolved>Fri, 23 Jun 2017 00:08:22 +0000</resolved>
                                                    <fixVersion>3.5.10</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1604780" author="xgen-internal-githook" created="Fri, 23 Jun 2017 00:04:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jsmulrow&apos;, u&apos;name&apos;: u&apos;Jack Mulrow&apos;, u&apos;email&apos;: u&apos;jack.mulrow@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29785&quot; title=&quot;shards should not gossip $logicalTime and operationTime if FCV is set to 3.4&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29785&quot;&gt;&lt;del&gt;SERVER-29785&lt;/del&gt;&lt;/a&gt; shards and config should not gossip logicalTime and operationTime if FCV is 3.4&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2800021bafc2c006f88d6d640a02a30f2c4231da&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2800021bafc2c006f88d6d640a02a30f2c4231da&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="396153">SERVER-29754</issuekey>
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