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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-1561] sorting doesn&apos;t work if sort field not included in projection</title>
                <link>https://jira.mongodb.org/browse/SERVER-1561</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;load server with something like this:&lt;br/&gt;
for (var i=0; i&amp;lt; 1000000;i++) {var r = Math.random();  db.foo.insert(&lt;/p&gt;
{i:i, r:r, rr:r, s:s}
&lt;p&gt;)}&lt;br/&gt;
db.foo.ensureIndex(&lt;/p&gt;
{r:1}
&lt;p&gt;)&lt;/p&gt;


&lt;p&gt;test with this:&lt;br/&gt;
r=-1&lt;br/&gt;
db.foo.find({},&lt;/p&gt;
{rr:1}
&lt;p&gt;).sort(&lt;/p&gt;
{r:1}
&lt;p&gt;).forEach(function(z){ if (z.rr &amp;lt;= r) &lt;/p&gt;
{printjson(z);print(r)}
&lt;p&gt; r= z.rr})&lt;/p&gt;


&lt;p&gt;you will see one printout each time mongos switches shards&lt;/p&gt;</description>
                <environment></environment>
        <key id="12650">SERVER-1561</key>
            <summary>sorting doesn&apos;t work if sort field not included in projection</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="eliot">Eliot Horowitz</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                    </labels>
                <created>Tue, 3 Aug 2010 20:47:44 +0000</created>
                <updated>Tue, 12 Jul 2016 00:20:04 +0000</updated>
                            <resolved>Wed, 4 Aug 2010 15:58:03 +0000</resolved>
                                                    <fixVersion>1.6.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="16470" author="auto" created="Wed, 4 Aug 2010 15:56:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;erh&apos;, &apos;name&apos;: &apos;Eliot Horowitz&apos;, &apos;email&apos;: &apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: fix sorting if sort field not included in projection &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1561&quot; title=&quot;sorting doesn&amp;#39;t work if sort field not included in projection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1561&quot;&gt;&lt;del&gt;SERVER-1561&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/63f894763de77a0be4a67d665b87298736604ba3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/63f894763de77a0be4a67d665b87298736604ba3&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="16468" author="auto" created="Wed, 4 Aug 2010 15:51:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;erh&apos;, &apos;name&apos;: &apos;Eliot Horowitz&apos;, &apos;email&apos;: &apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: fix sorting if sort field not included in projection &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1561&quot; title=&quot;sorting doesn&amp;#39;t work if sort field not included in projection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1561&quot;&gt;&lt;del&gt;SERVER-1561&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/51ac96b84420846af5dc6e5ca8d142e48834bbb8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/51ac96b84420846af5dc6e5ca8d142e48834bbb8&lt;/a&gt;&lt;/p&gt;</comment>
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