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    <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-74568] SdamServerSelector sometimes doesn&apos;t fully respect client readPreference for config shard</title>
                <link>https://jira.mongodb.org/browse/SERVER-74568</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, the SdamServerSelector has the logic to ignore the minClusterTime in the readPreference given to it if the timestamp is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cd29ac28a87681905b2a47f1378661bba0a96275/src/mongo/client/sdam/server_selector.cpp#L79&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;not satisfiable&lt;/a&gt;. When constructing the effective readPreference, it only &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cd29ac28a87681905b2a47f1378661bba0a96275/src/mongo/client/sdam/server_selector.cpp#L81&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;gives &apos;pref&apos; to the constructor&lt;/a&gt;. Consequently, the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cd29ac28a87681905b2a47f1378661bba0a96275/src/mongo/client/read_preference.h#L208-L210&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;other configurations&lt;/a&gt; such as &apos;tags&apos;, &apos;maxStalenessSeconds&apos;, and &apos;hedgingMode&apos; all get lost.&#160; For shard remote targeting at least, minClusterTime is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cd29ac28a87681905b2a47f1378661bba0a96275/src/mongo/s/client/shard_remote.cpp#L347&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;only specified&lt;/a&gt;&#160;when the shard is the config shard. Prior to&#160;PM-2290, there probably isn&apos;t a case where the config server is targeted with readPreference that contains tags and so on. That might be why this issue never surfaced. Starting from PM-2290, this is a bug that needs to be addressed since it can result in the external client readPreference not being fully respected (as shown in BF-27925),&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2280034">SERVER-74568</key>
            <summary>SdamServerSelector sometimes doesn&apos;t fully respect client readPreference for config shard</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="wenqin.ye@mongodb.com">Wenqin Ye</assignee>
                                    <reporter username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</reporter>
                        <labels>
                    </labels>
                <created>Thu, 2 Mar 2023 20:36:08 +0000</created>
                <updated>Sun, 29 Oct 2023 21:25:23 +0000</updated>
                            <resolved>Mon, 10 Apr 2023 19:26:02 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5335836" author="xgen-internal-githook" created="Mon, 10 Apr 2023 17:44:43 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;wenqinYe&apos;, &apos;email&apos;: &apos;wenqin908@gmail.com&apos;, &apos;username&apos;: &apos;wenqinYe&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-74568&quot; title=&quot;SdamServerSelector sometimes doesn&amp;#39;t fully respect client readPreference for config shard&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-74568&quot;&gt;&lt;del&gt;SERVER-74568&lt;/del&gt;&lt;/a&gt;: SdamServerSelector sometimes doesn&apos;t fully respect client readPreference for config shard&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/358010c175ec0863cdfacb6ce172359d5972db87&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/358010c175ec0863cdfacb6ce172359d5972db87&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5288007" author="jack.mulrow" created="Tue, 21 Mar 2023 14:06:46 +0000"  >&lt;p&gt;Scheduling for the end of this project because it&apos;s possible either &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-74415&quot; title=&quot;SdamServerSelector Does Not Respect ReadPreference minClusterTime&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-74415&quot;&gt;&lt;del&gt;SERVER-74415&lt;/del&gt;&lt;/a&gt; or &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-74281&quot; title=&quot;Only attach minClusterTime read preference for sharding catalog operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-74281&quot;&gt;&lt;del&gt;SERVER-74281&lt;/del&gt;&lt;/a&gt; resolve this or mitigate its impact in a catalog shard enabled cluster.&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="2272379">SERVER-74281</issuekey>
        </issuelink>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="2102812">SERVER-68440</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="2276374">SERVER-74415</issuekey>
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