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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-34195] Support speculative readConcern behavior in transactions</title>
                <link>https://jira.mongodb.org/browse/SERVER-34195</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Rather than open at an already-majority-committed snapshot, transactions can open at the last-applied snapshot, allowing back-to-back transactions with w:1 write concern and transactions started after w:1 writes to read the prior writes without stalling for replication. In the event that replication fails, the transaction will abort. Users interested in detecting this failure should commit transactions with w:majority write concern.&lt;/p&gt;

&lt;p&gt;This optimization reduces the write conflict rate for transactions operating on frequently written documents. In exchange, applications that read data during transaction execution and use that data to make decisions outside the database must wait for their transactions to commit with w:majority write concern in order to be certain that the observed data meets the user-requested read concern level. Put more simply, if you don&apos;t know that your transaction successfully committed, you should not expect the data you read to be consistent.&lt;/p&gt;</description>
                <environment></environment>
        <key id="518909">SERVER-34195</key>
            <summary>Support speculative readConcern behavior in transactions</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="matthew.russotto@mongodb.com">Matthew Russotto</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                    </labels>
                <created>Thu, 29 Mar 2018 17:49:48 +0000</created>
                <updated>Sun, 29 Oct 2023 22:33:14 +0000</updated>
                            <resolved>Wed, 25 Apr 2018 19:53:42 +0000</resolved>
                                                    <fixVersion>4.0.0-rc0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="1872535" author="xgen-internal-githook" created="Tue, 24 Apr 2018 14:10:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;matthew.russotto@10gen.com&apos;, &apos;username&apos;: &apos;mtrussotto&apos;, &apos;name&apos;: &apos;Matthew Russotto&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34195&quot; title=&quot;Support speculative readConcern behavior in transactions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34195&quot;&gt;&lt;del&gt;SERVER-34195&lt;/del&gt;&lt;/a&gt; Support speculative readConcern behavior in transactions.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/91148023de6e299ff33832e6e960e73697a0f921&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/91148023de6e299ff33832e6e960e73697a0f921&lt;/a&gt;&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is documented by">
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            <issuekey id="542842">DOCS-11696</issuekey>
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            <issuekey id="530229">SERVER-34532</issuekey>
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            <issuekey id="514561">SERVER-34038</issuekey>
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