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    <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-33585] Do not return $clusterTime when no keys are available</title>
                <link>https://jira.mongodb.org/browse/SERVER-33585</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Theproblem&quot;&gt;&lt;/a&gt;The problem&lt;/h2&gt;
&lt;p&gt;There are occasional errors while starting up mongodb replica set  detailed in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31916&quot; title=&quot;Initial request to a shardsvr mongod can return a clustertime signed with the null key&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31916&quot;&gt;&lt;del&gt;SERVER-31916&lt;/del&gt;&lt;/a&gt;.&lt;br/&gt;
The question is if the change similar to the shell fix to wait for the clusterTime signature should be implemented in all drivers or if its possible to fix in the server.&lt;br/&gt;
On the server side this call&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.7.2/src/mongo/db/service_entry_point_mongod.cpp#L289&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r3.7.2/src/mongo/db/service_entry_point_mongod.cpp#L289&lt;/a&gt;&lt;br/&gt;
returns the dummy signature from mongod if the keys are not there yet. Its necessary for the proper replica set start up.&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;Thesolution&quot;&gt;&lt;/a&gt;The solution&lt;/h2&gt;
&lt;p&gt;Its ok to not return $clusterTime if there are no keys available. The internal clients always use the internal user to communicate to each other - its a different code path. Returning no signature to external clients only in the case when auth is on will fix problems in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31916&quot; title=&quot;Initial request to a shardsvr mongod can return a clustertime signed with the null key&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31916&quot;&gt;&lt;del&gt;SERVER-31916&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="504275">SERVER-33585</key>
            <summary>Do not return $clusterTime when no keys are available</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="misha.tyulenev@mongodb.com">Misha Tyulenev</assignee>
                                    <reporter username="misha.tyulenev@mongodb.com">Misha Tyulenev</reporter>
                        <labels>
                    </labels>
                <created>Thu, 1 Mar 2018 19:44:56 +0000</created>
                <updated>Sun, 29 Oct 2023 22:34:17 +0000</updated>
                            <resolved>Mon, 26 Mar 2018 22:49:44 +0000</resolved>
                                                    <fixVersion>3.6.5</fixVersion>
                    <fixVersion>3.7.4</fixVersion>
                                    <component>Sharding</component>
                                        <votes>1</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1889654" author="xgen-internal-githook" created="Fri, 11 May 2018 21:52:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Misha Tyulenev&apos;, &apos;email&apos;: &apos;misha@mongodb.com&apos;, &apos;username&apos;: &apos;mikety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33585&quot; title=&quot;Do not return $clusterTime when no keys are available&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33585&quot;&gt;&lt;del&gt;SERVER-33585&lt;/del&gt;&lt;/a&gt; do not return clusterTime when no keys are available&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a20ecd3e3a174162052ff99913bc2ca9a839d618&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a20ecd3e3a174162052ff99913bc2ca9a839d618&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1845941" author="xgen-internal-githook" created="Mon, 26 Mar 2018 22:46:55 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;misha@mongodb.com&apos;, &apos;name&apos;: &apos;Misha Tyulenev&apos;, &apos;username&apos;: &apos;mikety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33585&quot; title=&quot;Do not return $clusterTime when no keys are available&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33585&quot;&gt;&lt;del&gt;SERVER-33585&lt;/del&gt;&lt;/a&gt; do not return clusterTime when no keys are available&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/152885358a4ecab312c690b2ffee5dfb7c37311a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/152885358a4ecab312c690b2ffee5dfb7c37311a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1820352" author="behackett" created="Thu, 1 Mar 2018 20:29:02 +0000"  >&lt;p&gt;This ^.&lt;/p&gt;

&lt;p&gt;Drivers know how to handle not getting a cluster time. They can&apos;t handle getting a broken cluster time.&lt;/p&gt;</comment>
                            <comment id="1820324" author="shane.harvey" created="Thu, 1 Mar 2018 20:10:00 +0000"  >&lt;p&gt;What if the dummy $clusterTime is never sent to external clients but is still sent internally to mongod/mongos so that the replica set can start properly?&lt;/p&gt;</comment>
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