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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-56563] [RRFaM] Forge noop image oplog entries for chunk migration</title>
                <link>https://jira.mongodb.org/browse/SERVER-56563</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Chunk migrations replicate retryable findAndModify information by transferring the noop oplog entries that represent the pre/post images.&lt;/p&gt;

&lt;p&gt;With retryable images being saved into an implicitly replicated collection, those images are no longer naturally discovered to be transferred.&lt;/p&gt;

&lt;p&gt;When a chunk migration source is about to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5e1593f07271f29af4761bb7ebeebcab48fdfc54/src/mongo/db/s/migration_chunk_cloner_source_legacy.cpp#L1098&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;transfer an oplog entry&lt;/a&gt; that requires a pre/post image written in the new format, we will:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;perform the lookup on image collection&lt;/li&gt;
	&lt;li&gt;forge a noop oplog entry&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;This effectively downconverts the new retryable findAndModify format to the old format for chunk migrations.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1698926">SERVER-56563</key>
            <summary>[RRFaM] Forge noop image oplog entries for chunk migration</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="daniel.gottlieb@mongodb.com">Daniel Gottlieb</assignee>
                                    <reporter username="daniel.gottlieb@mongodb.com">Daniel Gottlieb</reporter>
                        <labels>
                    </labels>
                <created>Mon, 3 May 2021 02:58:26 +0000</created>
                <updated>Sun, 29 Oct 2023 21:54:10 +0000</updated>
                            <resolved>Fri, 14 May 2021 14:45:27 +0000</resolved>
                                                    <fixVersion>4.0.25</fixVersion>
                    <fixVersion>4.2.15</fixVersion>
                    <fixVersion>4.4.7</fixVersion>
                    <fixVersion>5.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="3848353" author="xgen-internal-githook" created="Fri, 28 May 2021 19:05:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Andrew Shuvalov&apos;, &apos;email&apos;: &apos;andrew.shuvalov@mongodb.com&apos;, &apos;username&apos;: &apos;shuvalov-mdb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56563&quot; title=&quot;[RRFaM] Forge noop image oplog entries for chunk migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56563&quot;&gt;&lt;del&gt;SERVER-56563&lt;/del&gt;&lt;/a&gt;: &lt;span class=&quot;error&quot;&gt;&amp;#91;RRFaM&amp;#93;&lt;/span&gt; Forge noop image oplog entries for chunk migration&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d9aee7e28be05a49e092b4acd483906eef7e735e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d9aee7e28be05a49e092b4acd483906eef7e735e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3819341" author="xgen-internal-githook" created="Mon, 24 May 2021 18:41:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Daniel Gottlieb&apos;, &apos;email&apos;: &apos;daniel.gottlieb@mongodb.com&apos;, &apos;username&apos;: &apos;dgottlieb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56563&quot; title=&quot;[RRFaM] Forge noop image oplog entries for chunk migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56563&quot;&gt;&lt;del&gt;SERVER-56563&lt;/del&gt;&lt;/a&gt;: Downconvert `needsRetryImage` oplog entries for chunk migrations.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 9fe221be9a9b4bb04c6d9e8727e5760d1813b408)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/283cb4e0ac9d916a981bafe1f597418c332e6148&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/283cb4e0ac9d916a981bafe1f597418c332e6148&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3773855" author="xgen-internal-githook" created="Fri, 14 May 2021 15:03:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Chan&apos;, &apos;email&apos;: &apos;jason.chan@10gen.com&apos;, &apos;username&apos;: &apos;jasonjhchan&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56563&quot; title=&quot;[RRFaM] Forge noop image oplog entries for chunk migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56563&quot;&gt;&lt;del&gt;SERVER-56563&lt;/del&gt;&lt;/a&gt; Forge noop image oplog entries for chunk migration&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fc57a64f959668b04ff7c7f2efdd68ce95a11736&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fc57a64f959668b04ff7c7f2efdd68ce95a11736&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3773804" author="xgen-internal-githook" created="Fri, 14 May 2021 14:44:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Daniel Gottlieb&apos;, &apos;email&apos;: &apos;daniel.gottlieb@mongodb.com&apos;, &apos;username&apos;: &apos;dgottlieb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56563&quot; title=&quot;[RRFaM] Forge noop image oplog entries for chunk migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56563&quot;&gt;&lt;del&gt;SERVER-56563&lt;/del&gt;&lt;/a&gt;: Downconvert `needsRetryImage` oplog entries for chunk migrations.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9fe221be9a9b4bb04c6d9e8727e5760d1813b408&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9fe221be9a9b4bb04c6d9e8727e5760d1813b408&lt;/a&gt;&lt;/p&gt;</comment>
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