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    <title>MongoDB Jira</title>
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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>[SERVER-20743] Sharding code needs to set $secondaryOk on commands targeted at hosts via read preferences other than PrimaryOnly.</title>
                <link>https://jira.mongodb.org/browse/SERVER-20743</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The runCommand methods on the ShardRegistry type that currently take a HostAndPort argument should actually take a ReadPreferenceSetting and either a Shard or a Targeter. The problem with the current form is that the targeter is given a read preference by code trying to run commands against shards in order to derive a HostAndPort. The code trying to run commands is not then obligated (or sometimes even enabled) to appropriately set the $secondaryOk metadata field. Given the uses, a better design would be for the runCommand-like methods to take a Shard or Targeter along with a read preference, and to do targeting and command dispatch together.&lt;/p&gt;

&lt;p&gt;Making this change will hopefully eliminate bugs where operations are targeted to secondary nodes without setting the $secondaryOk flag.&lt;/p&gt;</description>
                <environment></environment>
        <key id="232596">SERVER-20743</key>
            <summary>Sharding code needs to set $secondaryOk on commands targeted at hosts via read preferences other than PrimaryOnly.</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="schwerin@mongodb.com">Andy Schwerin</assignee>
                                    <reporter username="schwerin@mongodb.com">Andy Schwerin</reporter>
                        <labels>
                    </labels>
                <created>Fri, 2 Oct 2015 18:22:30 +0000</created>
                <updated>Wed, 25 Jan 2017 21:59:57 +0000</updated>
                            <resolved>Tue, 6 Oct 2015 16:46:07 +0000</resolved>
                                                    <fixVersion>3.1.9</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1052684" author="xgen-internal-githook" created="Tue, 6 Oct 2015 16:45:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20743&quot; title=&quot;Sharding code needs to set $secondaryOk on commands targeted at hosts via read preferences other than PrimaryOnly.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20743&quot;&gt;&lt;del&gt;SERVER-20743&lt;/del&gt;&lt;/a&gt; Combine target selection and command execution in ShardRegistry.&lt;/p&gt;

&lt;p&gt;Also, properly set the  metadata field on all commands dispatched through ShardRegistry.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9267d348b98e3be67a85f219ba184c35f35fc309&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9267d348b98e3be67a85f219ba184c35f35fc309&lt;/a&gt;&lt;/p&gt;</comment>
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                                        <issuelink>
            <issuekey id="232556">SERVER-20764</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="232633">SERVER-20746</issuekey>
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            <issuekey id="199919">SERVER-18194</issuekey>
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