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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>[GODRIVER-1522] Read preference should not be sent to mongos for aggregations with output stages</title>
                <link>https://jira.mongodb.org/browse/GODRIVER-1522</link>
                <project id="14289" key="GODRIVER">Go Driver</project>
                    <description>&lt;p&gt;Our aggregation code unconditionally passes down the collection&apos;s read preference to the operations layer. This is fine for replica sets because we use the write selector for aggregations with output stages ($out/$merge) but not for sharded clusters because the lower level will pass the read preference to the mongos.&lt;/p&gt;

&lt;p&gt;I have verified that the a $out with read preference secondary does not work as expected against a sharded cluster and the output collection is not created.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1226604">GODRIVER-1522</key>
            <summary>Read preference should not be sent to mongos for aggregations with output stages</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="divjot.arora@mongodb.com">Divjot Arora</assignee>
                                    <reporter username="divjot.arora@mongodb.com">Divjot Arora</reporter>
                        <labels>
                    </labels>
                <created>Wed, 4 Mar 2020 19:27:00 +0000</created>
                <updated>Sat, 28 Oct 2023 11:38:17 +0000</updated>
                            <resolved>Tue, 10 Mar 2020 22:04:02 +0000</resolved>
                                    <version>1.3.0</version>
                                    <fixVersion>1.3.2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2962251" author="xgen-internal-githook" created="Tue, 10 Mar 2020 22:03:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Divjot Arora&apos;, &apos;username&apos;: &apos;divjotarora&apos;, &apos;email&apos;: &apos;divjot.arora@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-1522&quot; title=&quot;Read preference should not be sent to mongos for aggregations with output stages&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-1522&quot;&gt;&lt;del&gt;GODRIVER-1522&lt;/del&gt;&lt;/a&gt; Ignore read preference for aggregations with output stages (#327)&lt;br/&gt;
Branch: release/1.3&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/cd959e15b2efed2098faa60f4be9c6a472ce3942&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/cd959e15b2efed2098faa60f4be9c6a472ce3942&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2962132" author="xgen-internal-githook" created="Tue, 10 Mar 2020 21:35:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Divjot Arora&apos;, &apos;username&apos;: &apos;divjotarora&apos;, &apos;email&apos;: &apos;divjot.arora@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-1522&quot; title=&quot;Read preference should not be sent to mongos for aggregations with output stages&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-1522&quot;&gt;&lt;del&gt;GODRIVER-1522&lt;/del&gt;&lt;/a&gt; Ignore read preference for aggregations with output stages (#327)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/4f5fc1942fcfbb4d32d445cec0974a4a4a11111f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/4f5fc1942fcfbb4d32d445cec0974a4a4a11111f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2960298" author="divjot.arora" created="Tue, 10 Mar 2020 14:24:16 +0000"  >&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/pull/327&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/pull/327&lt;/a&gt;&lt;/p&gt;</comment>
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