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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>[SERVER-31442] $changeStream pipelines should inherit the collection default collation</title>
                <link>https://jira.mongodb.org/browse/SERVER-31442</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;tt&gt;$changeStream&lt;/tt&gt; pipelines currently use the collation specified on the operation, and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ce87416479155a9cf8e38a0f6b0c6bad194c9cfc/src/mongo/db/pipeline/document_source_change_stream.cpp#L260&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;error if the collation is non-simple&lt;/a&gt;. &lt;tt&gt;$changeStream&lt;/tt&gt; pipelines should instead resolve the collation by using the operation collation if specified, and otherwise inheriting the collection default collation. This will keep their behavior in accordance with other aggregation pipelines, and ensure that there is no behavior change when we start supporting collation on &lt;tt&gt;$changeStream&lt;/tt&gt; pipelines. For now, they should continue to error if the &lt;b&gt;resolved&lt;/b&gt; collation is non-simple. Note that resolving the collation requires taking a collection lock (which &lt;tt&gt;$changeStream&lt;/tt&gt; pipelines do not currently do).&lt;/p&gt;</description>
                <environment></environment>
        <key id="441730">SERVER-31442</key>
            <summary>$changeStream pipelines should inherit the collection default collation</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="bernard.gorman@mongodb.com">Bernard Gorman</assignee>
                                    <reporter username="tess.avitabile@mongodb.com">Tess Avitabile</reporter>
                        <labels>
                    </labels>
                <created>Fri, 6 Oct 2017 17:38:55 +0000</created>
                <updated>Mon, 30 Oct 2023 23:13:00 +0000</updated>
                            <resolved>Tue, 10 Oct 2017 09:09:04 +0000</resolved>
                                                    <fixVersion>3.6.0-rc0</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1694205" author="xgen-internal-githook" created="Tue, 10 Oct 2017 09:07:51 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;name&apos;: &apos;Bernard Gorman&apos;, &apos;username&apos;: &apos;gormanb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31442&quot; title=&quot;$changeStream pipelines should inherit the collection default collation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31442&quot;&gt;&lt;del&gt;SERVER-31442&lt;/del&gt;&lt;/a&gt; $changeStream pipelines should inherit the collection default collation&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6ad292704df43031ee94f696e709bf6285376ed4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6ad292704df43031ee94f696e709bf6285376ed4&lt;/a&gt;&lt;/p&gt;</comment>
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                                        <issuelink>
            <issuekey id="441741">SERVER-31443</issuekey>
        </issuelink>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="441768">SERVER-31447</issuekey>
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