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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-53542] Extend createOplogFetchingPipelineForResharding() to support atomic applyOps</title>
                <link>https://jira.mongodb.org/browse/SERVER-53542</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The&#160;ReshardingAggTest::VerifyPipelineAtomicApplyOps() test currently fails since the createOplogFetchingPipelineForResharding() function is looking for prevOpTime and destinedRecipient in each operation being applied.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1578524">SERVER-53542</key>
            <summary>Extend createOplogFetchingPipelineForResharding() to support atomic applyOps</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-sharding-nyc">[DO NOT USE] Backlog - Sharding NYC</assignee>
                                    <reporter username="alex.taskov@mongodb.com">Alexander Taskov</reporter>
                        <labels>
                    </labels>
                <created>Wed, 30 Dec 2020 14:51:41 +0000</created>
                <updated>Tue, 6 Dec 2022 01:40:43 +0000</updated>
                            <resolved>Sat, 5 Jun 2021 17:31:09 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3861330" author="max.hirschhorn@10gen.com" created="Sat, 5 Jun 2021 17:30:43 +0000"  >&lt;p&gt;The &quot;TODO &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53542&quot; title=&quot;Extend createOplogFetchingPipelineForResharding() to support atomic applyOps&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53542&quot;&gt;&lt;del&gt;SERVER-53542&lt;/del&gt;&lt;/a&gt;&quot; comment was removed by the changes from &lt;a href=&quot;https://github.com/mongodb/mongo/commit/b4c7db3eec365033a85c407e7b580ee5ed6518bd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;b4c7db3&lt;/a&gt; as part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57303&quot; title=&quot;Create transaction history iterator stage for Resharding&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57303&quot;&gt;&lt;del&gt;SERVER-57303&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="3706786" author="max.hirschhorn@10gen.com" created="Wed, 7 Apr 2021 22:56:10 +0000"  >&lt;p&gt;The plan is for mongodump to fail if it detects there is a resharding operation in progress. There isn&apos;t a need to support atomic applyOps on the collection being resharded. I think the work on this ticket is to remove &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5b7c968e4ee5f3137ff1e0a330959dc7c6ea8d0c/src/mongo/db/s/resharding/resharding_agg_test.cpp#L807-L816&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;these commented out lines&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="3569037" author="max.hirschhorn@10gen.com" created="Sat, 16 Jan 2021 23:14:03 +0000"  >&lt;p&gt;The aggregation pipeline for resharding&apos;s oplog fetching requires that the &quot;ui&quot; and &quot;destinedRecipient&quot; fields are filled in for the inner ops of an applyOps oplog entry. I believe the work involved on this ticket is to have &amp;#95;applyOps() in apply&amp;#95;ops.cpp fill in the &quot;destinedRecipient&quot; field like &lt;a href=&quot;https://github.com/mongodb/mongo/blob/30587ebfb1e4f2789942bd0f5b0cf27aa410c063/src/mongo/db/repl/apply_ops.cpp#L194-L207&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;it already does with the &quot;ui&quot; field&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I&apos;m also now realizing that mongos doesn&apos;t support the applyOps command. An atomic applyOps oplog entry would therefore only be generated by an application writing directly to the shard.&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is related to">
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            <issuekey id="1421051">SERVER-49892</issuekey>
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            <issuekey id="1762017">SERVER-57303</issuekey>
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