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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-33998] Remove the parallelCollectionScan command</title>
                <link>https://jira.mongodb.org/browse/SERVER-33998</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In its current form, the parallelCollectionScan command will only return multiple cursors when running a mongod with the MMAPv1 storage engine. With the deprecation of MMAPv1 we should also deprecate parallelCollectionScan.&lt;/p&gt;

&lt;p&gt;If the ability to partition a collection is required under WiredTiger in the future, it is likely it will take a different form than parallelCollectionScan. Once such request is tracked by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24274&quot; title=&quot;Create a command to provide query bounds for partitioning data in a collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24274&quot;&gt;SERVER-24274&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="513954">SERVER-33998</key>
            <summary>Remove the parallelCollectionScan command</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="sean.tao">Sean Tao</assignee>
                                    <reporter username="james.wahlin@mongodb.com">James Wahlin</reporter>
                        <labels>
                            <label>nyc</label>
                    </labels>
                <created>Tue, 20 Mar 2018 16:05:00 +0000</created>
                <updated>Sun, 29 Oct 2023 22:33:34 +0000</updated>
                            <resolved>Fri, 13 Jul 2018 16:50:31 +0000</resolved>
                                                    <fixVersion>4.1.1</fixVersion>
                                                        <votes>0</votes>
                                    <watches>14</watches>
                                                                                                                <comments>
                            <comment id="3753635" author="JIRAUSER1259863" created="Tue, 4 May 2021 09:54:45 +0000"  >&lt;p&gt;Hi, what is the alternative then? We have some custom code that has functionality similar to mongomirror to clone collections, but with advanced filtering. It makes use of `parallelCollectionScan` a lot since it&apos;s the way faster then using of a single cursor. Now we a trying to migrate to the latest mongo Atlas version from self-managed solution and it&apos;s a blocker for us. Any suggestion on how to clone collections fast with filters?&lt;/p&gt;</comment>
                            <comment id="1946919" author="sean.tao" created="Fri, 13 Jul 2018 16:50:32 +0000"  >&lt;p&gt;The parallelCollectionScan command is no longer supported, as we deleted the command entirely.&lt;/p&gt;</comment>
                            <comment id="1946185" author="xgen-internal-githook" created="Thu, 12 Jul 2018 21:55:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sean Tao&apos;, &apos;email&apos;: &apos;sean.tao@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33998&quot; title=&quot;Remove the parallelCollectionScan command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33998&quot;&gt;&lt;del&gt;SERVER-33998&lt;/del&gt;&lt;/a&gt; Remove the parallelCollectionScan command&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/acdbc57731fa3176b0467425ece92e76a8d82958&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/acdbc57731fa3176b0467425ece92e76a8d82958&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1863588" author="schwerin" created="Fri, 13 Apr 2018 14:49:18 +0000"  >&lt;p&gt;I think we should just remove this command when we remove the rest of the mmapv1 support, and skip adding a separate deprecation warning. Assigning to storage backlog to consider as part of their plan to remove mmapv1 support.&lt;/p&gt;</comment>
                    </comments>
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                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="571362">DRIVERS-562</issuekey>
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            <issuekey id="569920">SERVER-36055</issuekey>
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            <issuekey id="289045">SERVER-24274</issuekey>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="525314">SERVER-34417</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="458194">SERVER-31954</issuekey>
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