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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-36130] Migration status reports verify connection strings -- but those can change</title>
                <link>https://jira.mongodb.org/browse/SERVER-36130</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;During the chunk migration process, the source shard periodically polls the destination shard for updates. As part of the information verification process, we verify that the source shard&apos;s connection string hasn&apos;t changed. However, valid situations exist where it might change. For example, adding a new node to the source shard&apos;s replica set would change the connection string but would &lt;em&gt;not&lt;/em&gt; change the behavior of that shard with regards to migrations.&lt;/p&gt;

&lt;p&gt;Failures have cropped up where shards are aborted because the connection string has changed. Instead, we should verify that the from shard&apos;s name hasn&apos;t changed. Shard names are immutable and will serve to verify a shard without error.&lt;/p&gt;

&lt;p&gt;The line of code to change is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/s/migration_chunk_cloner_source_legacy.cpp#L309&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;. &lt;/p&gt;</description>
                <environment></environment>
        <key id="571498">SERVER-36130</key>
            <summary>Migration status reports verify connection strings -- but those can change</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="janna.golden@mongodb.com">Janna Golden</assignee>
                                    <reporter username="blake.oler@mongodb.com">Blake Oler</reporter>
                        <labels>
                    </labels>
                <created>Fri, 13 Jul 2018 20:25:27 +0000</created>
                <updated>Sun, 29 Oct 2023 22:29:49 +0000</updated>
                            <resolved>Tue, 28 Aug 2018 21:14:55 +0000</resolved>
                                    <version>4.0.1</version>
                                    <fixVersion>4.0.3</fixVersion>
                    <fixVersion>4.1.3</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2010933" author="xgen-internal-githook" created="Fri, 21 Sep 2018 20:12:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jannaerin&apos;, &apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36130&quot; title=&quot;Migration status reports verify connection strings -- but those can change&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36130&quot;&gt;&lt;del&gt;SERVER-36130&lt;/del&gt;&lt;/a&gt; Verify shardId rather than connection string during migration&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 1ee551653a1ff9c154d94e59c429529eb3ea9098)&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f66c37783f6b7f32759cf4bc4ac8f49688ccea97&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f66c37783f6b7f32759cf4bc4ac8f49688ccea97&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1988207" author="xgen-internal-githook" created="Tue, 28 Aug 2018 21:14:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jannaerin&apos;, &apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36130&quot; title=&quot;Migration status reports verify connection strings -- but those can change&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36130&quot;&gt;&lt;del&gt;SERVER-36130&lt;/del&gt;&lt;/a&gt; Verify shardId rather than connection string during migration&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1ee551653a1ff9c154d94e59c429529eb3ea9098&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1ee551653a1ff9c154d94e59c429529eb3ea9098&lt;/a&gt;&lt;/p&gt;</comment>
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