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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-42025] Prevent Oldest timestamp from advancing in prepare_transaction_read_at_cluster_time.js.</title>
                <link>https://jira.mongodb.org/browse/SERVER-42025</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;prepare_transaction_read_at_cluster_time.js should run &lt;a href=&quot;https://github.com/mongodb/mongo/blob/518f382a78f904b2e7adf8ac36acc3a34a82fb4f/jstests/replsets/prepare_transaction_read_at_cluster_time.js#L41&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;find&lt;/a&gt;&#160; command without query yielding else it can fail with&#160;&quot;SnapshotTooOld&quot; error due to race between updating the&#160;oldest timestamp in the storage and reopening of the snapshot after query yield.&lt;/p&gt;</description>
                <environment></environment>
        <key id="829475">SERVER-42025</key>
            <summary>Prevent Oldest timestamp from advancing in prepare_transaction_read_at_cluster_time.js.</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="suganthi.mani@mongodb.com">Suganthi Mani</assignee>
                                    <reporter username="suganthi.mani@mongodb.com">Suganthi Mani</reporter>
                        <labels>
                    </labels>
                <created>Mon, 1 Jul 2019 16:55:24 +0000</created>
                <updated>Sun, 29 Oct 2023 22:19:23 +0000</updated>
                            <resolved>Mon, 19 Aug 2019 20:08:59 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                    <fixVersion>4.2.2</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2523771" author="xgen-internal-githook" created="Fri, 8 Nov 2019 00:20:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;smani87&apos;, &apos;email&apos;: &apos;suganthi.mani@mongodb.com&apos;, &apos;name&apos;: &apos;Suganthi Mani&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42025&quot; title=&quot;Prevent Oldest timestamp from advancing in prepare_transaction_read_at_cluster_time.js.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42025&quot;&gt;&lt;del&gt;SERVER-42025&lt;/del&gt;&lt;/a&gt; Prevent Oldest timestamp from advancing in prepare_transaction_read_at_cluster_time.js.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 54445c82d53a47b849247b22fc4e6ccbaf1a58d8)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/33f6ccf7bb740165ce3c2313c619bbf957414eb6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/33f6ccf7bb740165ce3c2313c619bbf957414eb6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2377849" author="xgen-internal-githook" created="Mon, 19 Aug 2019 20:07:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;smani87&apos;, &apos;email&apos;: &apos;suganthi.mani@mongodb.com&apos;, &apos;name&apos;: &apos;Suganthi Mani&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42025&quot; title=&quot;Prevent Oldest timestamp from advancing in prepare_transaction_read_at_cluster_time.js.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42025&quot;&gt;&lt;del&gt;SERVER-42025&lt;/del&gt;&lt;/a&gt; Prevent Oldest timestamp from advancing in prepare_transaction_read_at_cluster_time.js.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/54445c82d53a47b849247b22fc4e6ccbaf1a58d8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/54445c82d53a47b849247b22fc4e6ccbaf1a58d8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2362290" author="suganthi.mani" created="Thu, 8 Aug 2019 04:46:58 +0000"  >&lt;p&gt;Instead of query yielding, better option is to enable &quot;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/518f382a78f904b2e7adf8ac36acc3a34a82fb4f/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp#L1656&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;WTPreserveSnapshotHistoryIndefinitely&lt;/a&gt;&quot; failpoint for entire duration of the test which prevents node from advancing the oldestTimestamp.&lt;/p&gt;</comment>
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