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    <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>[CDRIVER-1020] Secondary reads directed to hidden members</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-1020</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;See &lt;a href=&quot;https://jira.mongodb.org/browse/DRIVERS-267&quot; title=&quot;SDAM missing a test for hidden replica set members&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DRIVERS-267&quot;&gt;&lt;del&gt;DRIVERS-267&lt;/del&gt;&lt;/a&gt;: the C Driver doesn&apos;t check the &quot;hidden&quot; field so a hidden secondary is considered a normal secondary available for reads.&lt;/p&gt;

&lt;p&gt;This bug manifests rarely: the hidden node must be in the seed list, and the application must be reading with a non-primary read preference while no primary is available. (If the hidden node is &lt;b&gt;not&lt;/b&gt; in the seed list it is never discovered. If it &lt;b&gt;is&lt;/b&gt; in the seed list but a primary is available, the driver trusts the primary&apos;s host list, which omits the hidden member.)&lt;/p&gt;</description>
                <environment></environment>
        <key id="240578">CDRIVER-1020</key>
            <summary>Secondary reads directed to hidden members</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="9">Done</resolution>
                                        <assignee username="jesse@mongodb.com">A. Jesse Jiryu Davis</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Sat, 21 Nov 2015 13:35:37 +0000</created>
                <updated>Tue, 8 Dec 2015 02:32:40 +0000</updated>
                            <resolved>Wed, 2 Dec 2015 01:33:30 +0000</resolved>
                                    <version>1.2.0</version>
                                    <fixVersion>1.3.0-rc0</fixVersion>
                    <fixVersion>1.2.2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1101170" author="xgen-internal-githook" created="Mon, 30 Nov 2015 21:01:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;ajdavis&apos;, u&apos;name&apos;: u&apos;A. Jesse Jiryu Davis&apos;, u&apos;email&apos;: u&apos;jesse@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-1020&quot; title=&quot;Secondary reads directed to hidden members&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-1020&quot;&gt;&lt;del&gt;CDRIVER-1020&lt;/del&gt;&lt;/a&gt; ignore hidden secondaries&lt;br/&gt;
Branch: r1.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/6ca206ffd2406e8891dc0672444fdff2aecf5ed6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/6ca206ffd2406e8891dc0672444fdff2aecf5ed6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1096417" author="jesse" created="Mon, 23 Nov 2015 22:44:56 +0000"  >&lt;p&gt;Code merged to master; still open awaiting backport to r1.2 branch.&lt;/p&gt;</comment>
                            <comment id="1095959" author="xgen-internal-githook" created="Mon, 23 Nov 2015 17:13:51 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;ajdavis&apos;, u&apos;name&apos;: u&apos;A. Jesse Jiryu Davis&apos;, u&apos;email&apos;: u&apos;jesse@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-1020&quot; title=&quot;Secondary reads directed to hidden members&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-1020&quot;&gt;&lt;del&gt;CDRIVER-1020&lt;/del&gt;&lt;/a&gt; ignore hidden secondaries&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/be50225ba03226584eeea2c8865a5528178a262c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/be50225ba03226584eeea2c8865a5528178a262c&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="239758">CDRIVER-1002</issuekey>
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