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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-1837] map/reduce: don&apos;t use tmp collections </title>
                <link>https://jira.mongodb.org/browse/SERVER-1837</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Change output handling for map/reduce.&lt;/p&gt;

&lt;p&gt;1) Small results sets should be able to be returned in the command&lt;br/&gt;
2) If large, &quot;out&quot; always has to be specified&lt;/p&gt;</description>
                <environment></environment>
        <key id="13161">SERVER-1837</key>
            <summary>map/reduce: don&apos;t use tmp collections </summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="eliot">Eliot Horowitz</reporter>
                        <labels>
                    </labels>
                <created>Thu, 23 Sep 2010 14:25:50 +0000</created>
                <updated>Tue, 12 Jul 2016 00:18:41 +0000</updated>
                            <resolved>Thu, 16 Dec 2010 21:51:24 +0000</resolved>
                                                    <fixVersion>1.7.4</fixVersion>
                                                        <votes>3</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="21485" author="auto" created="Thu, 16 Dec 2010 21:41:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: map/reduce no longer uses temp collections.&lt;br/&gt;
you have to specify out&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1837&quot; title=&quot;map/reduce: don&amp;#39;t use tmp collections &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1837&quot;&gt;&lt;del&gt;SERVER-1837&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c0fa67131864a2f2c5cf59f7cb83eb8612ab40b8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c0fa67131864a2f2c5cf59f7cb83eb8612ab40b8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="21443" author="auto" created="Wed, 15 Dec 2010 14:51:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: more map/reduce refactoring for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1837&quot; title=&quot;map/reduce: don&amp;#39;t use tmp collections &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1837&quot;&gt;&lt;del&gt;SERVER-1837&lt;/del&gt;&lt;/a&gt; (4)&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c7700058748d86e0643e2c2461d2673e7ca17bf9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c7700058748d86e0643e2c2461d2673e7ca17bf9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="21442" author="auto" created="Wed, 15 Dec 2010 14:51:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: more map/reduce refactoring for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1837&quot; title=&quot;map/reduce: don&amp;#39;t use tmp collections &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1837&quot;&gt;&lt;del&gt;SERVER-1837&lt;/del&gt;&lt;/a&gt; all db access encapsulated&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/845360735a617684a4b3cafe8d8632cc64695493&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/845360735a617684a4b3cafe8d8632cc64695493&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="21441" author="auto" created="Wed, 15 Dec 2010 14:51:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: more map/reduce refactoring for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1837&quot; title=&quot;map/reduce: don&amp;#39;t use tmp collections &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1837&quot;&gt;&lt;del&gt;SERVER-1837&lt;/del&gt;&lt;/a&gt; (2)&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e5d0731c2d1e28b03c0a4bec194126f75bc14752&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e5d0731c2d1e28b03c0a4bec194126f75bc14752&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="21440" author="auto" created="Wed, 15 Dec 2010 14:51:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: more map/reduce refactoring for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1837&quot; title=&quot;map/reduce: don&amp;#39;t use tmp collections &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1837&quot;&gt;&lt;del&gt;SERVER-1837&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3ac6dfcd5cb768f793b845d871971133afd73962&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3ac6dfcd5cb768f793b845d871971133afd73962&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="20322" author="eliot" created="Mon, 15 Nov 2010 17:57:03 +0000"  >&lt;p&gt;may want to change the way tmp collections work...&lt;/p&gt;</comment>
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