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    <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-64200] Remove invariant stableTimestamp &lt;= allDurableTimestamp already checked in WT</title>
                <link>https://jira.mongodb.org/browse/SERVER-64200</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we are &lt;a href=&quot;https://github.com/10gen/mongo/blob/ee5dacd18fd01e61b449066e2081515da79a8d66/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp#L2130-L2140&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;checking this invariant when setting the stable timestamp.&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;It is suspected that we can fetch a stale value for the all durable timestamp because we lack strong synchronization, which could make this invariant fail under some circumstances even though all durable is really greater than the stable timestamp. &lt;/p&gt;

&lt;p&gt;Given that WT already checks the same property both &lt;a href=&quot;https://github.com/10gen/mongo/blob/ee5dacd18fd01e61b449066e2081515da79a8d66/src/third_party/wiredtiger/src/txn/txn.c#L1698-L1708&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;for prepared transactions&lt;/a&gt; and &lt;a href=&quot;https://github.com/10gen/mongo/blob/ee5dacd18fd01e61b449066e2081515da79a8d66/src/third_party/wiredtiger/src/txn/txn_timestamp.c#L561-L570&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;for non-prepared transactions&lt;/a&gt; with the appropriate synchronization we can remove the check at this layer.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1994560">SERVER-64200</key>
            <summary>Remove invariant stableTimestamp &lt;= allDurableTimestamp already checked in WT</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="daniel.gomezferro@mongodb.com">Daniel Gomez Ferro</assignee>
                                    <reporter username="daniel.gomezferro@mongodb.com">Daniel Gomez Ferro</reporter>
                        <labels>
                    </labels>
                <created>Fri, 4 Mar 2022 10:14:09 +0000</created>
                <updated>Sun, 29 Oct 2023 21:41:37 +0000</updated>
                            <resolved>Mon, 7 Mar 2022 08:23:01 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4392238" author="xgen-internal-githook" created="Fri, 4 Mar 2022 18:51:02 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Daniel G&#243;mez Ferro&apos;, &apos;email&apos;: &apos;daniel.gomezferro@mongodb.com&apos;, &apos;username&apos;: &apos;dgomezferro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64200&quot; title=&quot;Remove invariant stableTimestamp &amp;lt;= allDurableTimestamp already checked in WT&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64200&quot;&gt;&lt;del&gt;SERVER-64200&lt;/del&gt;&lt;/a&gt; Remove invariant in WiredTigerKVEngine::setStableTimestamp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bac491bc8083025372cc3a948f0590311530759f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bac491bc8083025372cc3a948f0590311530759f&lt;/a&gt;&lt;/p&gt;</comment>
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