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    <title>MongoDB Jira</title>
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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-78484] Preserve snapshot history in transactions_target_at_point_in_time.js on v4.4</title>
                <link>https://jira.mongodb.org/browse/SERVER-78484</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In `transactions_target_at_point_in_time.js`, we run transactions with `snapshot` read concern. On slow machines, if the transaction takes a long time, we can see the transaction read operation fail with `SnapshotTooOld`, because the default snapshot history window is only 5s.&lt;/p&gt;

&lt;p&gt;In 4.4, we don&apos;t have the ability to set the minimum snapshot history window via server parameter. Instead, we can use the failpoint `WTPreserveSnapshotHistoryIndefinitely` to preserve the history for the duration of the test, so that even slow transactions complete.&lt;/p&gt;

&lt;p&gt;We&apos;ve implemented a similar solution for other 4.4 tests that fail due to insufficient snapshot history (like &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;). This fix should also only go in v4.4, as we&apos;ve fixed the issue on v5.0 and above with the usage of a server parameter.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2378645">SERVER-78484</key>
            <summary>Preserve snapshot history in transactions_target_at_point_in_time.js on v4.4</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="ali.mir@mongodb.com">Ali Mir</assignee>
                                    <reporter username="ali.mir@mongodb.com">Ali Mir</reporter>
                        <labels>
                    </labels>
                <created>Tue, 27 Jun 2023 20:57:52 +0000</created>
                <updated>Sun, 29 Oct 2023 21:19:29 +0000</updated>
                            <resolved>Wed, 28 Jun 2023 23:41:16 +0000</resolved>
                                                    <fixVersion>4.4.23</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="5532663" author="xgen-internal-githook" created="Wed, 28 Jun 2023 23:10:03 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Ali Mir&apos;, &apos;email&apos;: &apos;ali.mir@mongodb.com&apos;, &apos;username&apos;: &apos;ali-mir&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78484&quot; title=&quot;Preserve snapshot history in transactions_target_at_point_in_time.js on v4.4&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78484&quot;&gt;&lt;del&gt;SERVER-78484&lt;/del&gt;&lt;/a&gt; Preserve snapshot history in transactions_target_at_point_in_time.js&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b6f816f31c0bb4cf8845b0858346bc3d0290dc4e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b6f816f31c0bb4cf8845b0858346bc3d0290dc4e&lt;/a&gt;&lt;/p&gt;</comment>
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