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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-53631] [Resharding] Verify UUIDs are correct in writesShouldRunInDistributedTransaction</title>
                <link>https://jira.mongodb.org/browse/SERVER-53631</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Check a few things and make changes accordingly:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;It&apos;s likely not necessary to pass in the reshardingUUID, since that information would have been already captured by the reshardingFields held on the CollectionMetadata object.&lt;/li&gt;
	&lt;li&gt;Think about whether the UUID captured from the chunk manager represents what we expect &#8211; this UUID may not match what is currently represented on the storage catalog.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1583186">SERVER-53631</key>
            <summary>[Resharding] Verify UUIDs are correct in writesShouldRunInDistributedTransaction</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="alex.taskov@mongodb.com">Alexander Taskov</assignee>
                                    <reporter username="blake.oler@mongodb.com">Blake Oler</reporter>
                        <labels>
                            <label>PM-234-M2</label>
                            <label>PM-234-T-lifecycle</label>
                    </labels>
                <created>Thu, 7 Jan 2021 15:26:39 +0000</created>
                <updated>Sun, 29 Oct 2023 21:59:05 +0000</updated>
                            <resolved>Thu, 14 Jan 2021 03:03:33 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3564132" author="xgen-internal-githook" created="Thu, 14 Jan 2021 03:00:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Alex Taskov&apos;, &apos;email&apos;: &apos;alex.taskov@mongodb.com&apos;, &apos;username&apos;: &apos;alextaskov&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53631&quot; title=&quot;[Resharding] Verify UUIDs are correct in writesShouldRunInDistributedTransaction&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53631&quot;&gt;&lt;del&gt;SERVER-53631&lt;/del&gt;&lt;/a&gt; Refactored and renamed writesShouldRunInDistributedTransaction function&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5c99a50da93163636c9fa77edd61846a7ba30f8a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5c99a50da93163636c9fa77edd61846a7ba30f8a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3553352" author="max.hirschhorn@10gen.com" created="Thu, 7 Jan 2021 19:03:58 +0000"  >&lt;blockquote&gt;
&lt;p&gt;It&apos;s likely not necessary to pass in the reshardingUUID, since that information would have been already captured by the reshardingFields held on the CollectionMetadata object.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;To be a little more specific, I think the method signature should be&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;CollectionMetadata::writesShouldRunInDistributedTransaction(&lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;const&lt;/span&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; UUID&amp;amp; currentCollectionUUID) &lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;const&lt;/span&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;where both &lt;tt&gt;reshardingUUID&lt;/tt&gt; and &lt;tt&gt;originalUUID&lt;/tt&gt; are coming from the TypeCollectionReshardingFields. See also &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53258?focusedCommentId=3545387&amp;amp;page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-3545387&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;this comment&lt;/a&gt; I had made on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53258&quot; title=&quot;[Resharding] Reject writes in opObserver when disallowWritesForResharding is true&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53258&quot;&gt;&lt;del&gt;SERVER-53258&lt;/del&gt;&lt;/a&gt;. The caller would provide the UUID in db/catalog&apos;s CollectionCatalog as the &lt;tt&gt;currentCollectionUUID&lt;/tt&gt;. &lt;tt&gt;&amp;#95;cm&amp;#45;&amp;gt;getUUID()&lt;/tt&gt; is always expected to be &lt;tt&gt;reshardingUUID&lt;/tt&gt; when we are in kCommitted.&lt;/p&gt;

&lt;p&gt;We should also rename this method because the design for resharding isn&apos;t have writes being converted to distributed transactions nor do we plan to extend the design to do so later. The design for resharding is waiting until the coordinator detects the resharding operation would commit quickly so we shouldn&apos;t ever be in kCommitted long enough where distributed transactions to allow &lt;em&gt;some&lt;/em&gt; writes would be helpful.&lt;/p&gt;</comment>
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            <issuekey id="1561207">SERVER-53258</issuekey>
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