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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>
    </build-info>


<item>
            <title>[SERVER-5932] support cursor based aggregation</title>
                <link>https://jira.mongodb.org/browse/SERVER-5932</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We should be able to get aggregation results out via a cursor as if they were a regular query.&lt;/p&gt;</description>
                <environment></environment>
        <key id="39610">SERVER-5932</key>
            <summary>support cursor based aggregation</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="dan@mongodb.com">Daniel Pasette</reporter>
                        <labels>
                    </labels>
                <created>Fri, 25 May 2012 13:10:10 +0000</created>
                <updated>Thu, 3 Jan 2019 23:23:08 +0000</updated>
                            <resolved>Mon, 15 Jul 2013 22:13:46 +0000</resolved>
                                                    <fixVersion>2.5.1</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>11</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="418124" author="dan@10gen.com" created="Wed, 4 Sep 2013 23:42:23 +0000"  >&lt;p&gt;This feature is released on the dev branch.  Initial documentation can be found here: &lt;a href=&quot;http://docs.mongodb.org/manual/release-notes/2.6/#aggregation-operation-may-return-a-cursor&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/release-notes/2.6/#aggregation-operation-may-return-a-cursor&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="398973" author="auto" created="Thu, 8 Aug 2013 20:25:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Support cursors returned from sharded aggregation&lt;/p&gt;

&lt;p&gt;Follow-up to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5932&quot; title=&quot;support cursor based aggregation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-5932&quot;&gt;&lt;del&gt;SERVER-5932&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/72cbbb5697ad341cdd3241db138ffeaf6aed3754&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/72cbbb5697ad341cdd3241db138ffeaf6aed3754&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="381353" author="auto" created="Mon, 15 Jul 2013 16:04:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5932&quot; title=&quot;support cursor based aggregation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-5932&quot;&gt;&lt;del&gt;SERVER-5932&lt;/del&gt;&lt;/a&gt; Fix use after free&lt;/p&gt;

&lt;p&gt;BuildBot ticket: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10200&quot; title=&quot;aggregation/testbugs.js (server5932.js) failed on Nightly Windows 64-bit DEBUG, Linux 32-bit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10200&quot;&gt;&lt;del&gt;SERVER-10200&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8c0ff93cc3f7088794f1d28322fe29702998165d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8c0ff93cc3f7088794f1d28322fe29702998165d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="381248" author="milkie" created="Mon, 15 Jul 2013 14:04:24 +0000"  >&lt;p&gt;e.g.&lt;br/&gt;
&lt;a href=&quot;http://buildbot.mongodb.org/builders/Nightly%20Windows%2064-bit%202008R2%2B%20DEBUG/builds/92&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://buildbot.mongodb.org/builders/Nightly%20Windows%2064-bit%202008R2%2B%20DEBUG/builds/92&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="381247" author="milkie" created="Mon, 15 Jul 2013 14:03:52 +0000"  >&lt;p&gt;Unit test is failing in debug mode&lt;/p&gt;</comment>
                            <comment id="378918" author="auto" created="Thu, 11 Jul 2013 14:51:06 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5932&quot; title=&quot;support cursor based aggregation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-5932&quot;&gt;&lt;del&gt;SERVER-5932&lt;/del&gt;&lt;/a&gt; Aggregation returning a cursor&lt;/p&gt;

&lt;p&gt;related tickets:&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-8261&quot; title=&quot;system for commands to return cursors&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-8261&quot;&gt;&lt;del&gt;SERVER-8261&lt;/del&gt;&lt;/a&gt; System for commands to return cursors&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10165&quot; title=&quot;Change aggregate shell helper to return cursor.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10165&quot;&gt;&lt;del&gt;SERVER-10165&lt;/del&gt;&lt;/a&gt; aggregate() helper should return cursor&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a51f2688fa05672d999c997170847a3ee29a223b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a51f2688fa05672d999c997170847a3ee29a223b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="378917" author="auto" created="Thu, 11 Jul 2013 14:51:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10134&quot; title=&quot;GetMore shouldn&amp;#39;t swallow errors&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10134&quot;&gt;&lt;del&gt;SERVER-10134&lt;/del&gt;&lt;/a&gt; Report errors during GetMore processing&lt;/p&gt;

&lt;p&gt;This is necessary for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5932&quot; title=&quot;support cursor based aggregation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-5932&quot;&gt;&lt;del&gt;SERVER-5932&lt;/del&gt;&lt;/a&gt; (aggregation returning cursors)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0f43cfcbe063c1f4615ce362e751155218224bec&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0f43cfcbe063c1f4615ce362e751155218224bec&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="361153" author="dan@10gen.com" created="Sun, 16 Jun 2013 03:43:59 +0000"  >&lt;p&gt;This is currently planned for the 2.6 release.&lt;/p&gt;</comment>
                            <comment id="336229" author="btiernay" created="Wed, 15 May 2013 15:00:40 +0000"  >&lt;p&gt;This is crucial for any sizeable collection. Otherwise it may require reissuing the aggregation pipeline multiple times in order to page through the results. This is terribly inefficient. &lt;/p&gt;

&lt;p&gt;Is there an ETA on this feature?&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="81612">SERVER-10134</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="85535">CSHARP-798</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="80148">DRIVERS-98</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="84225">JAVA-911</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="82944">PYTHON-542</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="18227">SERVER-3253</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="81206">SERVER-10097</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="86654">DOCS-1835</issuekey>
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                                        <issuelink>
            <issuekey id="62809">SERVER-8261</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="665223">SERVER-38831</issuekey>
        </issuelink>
                            </inwardlinks>
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