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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-62350] replace usage of read_before_oldest with reset_snapshot</title>
                <link>https://jira.mongodb.org/browse/SERVER-62350</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;WiredTigerRecoveryUnit::refreshSnapshot() was originally written prior to the existence of WiredTiger reset_snapshot() functionality.  We can now rewrite refreshSnapshot() to utilize reset_snapshot().  This also has the added benefit of removing usage of the &lt;tt&gt;read_before_oldest&lt;/tt&gt; configuration parameter to begin_transaction; there is a desire to remove this API from future WT versions.  Thus, the work for this ticket should include removing the read_before_oldest usage from wiredtiger_begin_transaction_block.cpp.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1958270">SERVER-62350</key>
            <summary>replace usage of read_before_oldest with reset_snapshot</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="jordi.olivares-provencio@mongodb.com">Jordi Olivares Provencio</assignee>
                                    <reporter username="milkie@mongodb.com">Eric Milkie</reporter>
                        <labels>
                    </labels>
                <created>Tue, 4 Jan 2022 17:38:38 +0000</created>
                <updated>Sun, 29 Oct 2023 21:44:33 +0000</updated>
                            <resolved>Fri, 11 Feb 2022 15:05:30 +0000</resolved>
                                                    <fixVersion>5.3.0</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="4350325" author="xgen-internal-githook" created="Fri, 11 Feb 2022 14:55:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Olivares Provencio&apos;, &apos;email&apos;: &apos;jordi.olivares-provencio@mongodb.com&apos;, &apos;username&apos;: &apos;jordiolivares&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-62350&quot; title=&quot;replace usage of read_before_oldest with reset_snapshot&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-62350&quot;&gt;&lt;del&gt;SERVER-62350&lt;/del&gt;&lt;/a&gt; Refactor refreshSnapshot to use WT-&amp;gt;reset_snapshot&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/36932a5418ab49863b72b421276884b00b147fc7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/36932a5418ab49863b72b421276884b00b147fc7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4342055" author="JIRAUSER1264163" created="Tue, 8 Feb 2022 14:44:13 +0000"  >&lt;p&gt;Thanks &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=keith.bostic&quot; class=&quot;user-hover&quot; rel=&quot;keith.bostic&quot;&gt;keith.bostic&lt;/a&gt;! I&apos;ll rebase my work on that commit and test it out again.&lt;/p&gt;</comment>
                            <comment id="4341768" author="keith.bostic" created="Tue, 8 Feb 2022 13:06:58 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=jordi.olivares-provencio&quot; class=&quot;user-hover&quot; rel=&quot;jordi.olivares-provencio&quot;&gt;jordi.olivares-provencio&lt;/a&gt;, I just merged &lt;a href=&quot;https://jira.mongodb.org/browse/WT-8790&quot; title=&quot;Only allow read-only transactions in reset_snapshot&quot; class=&quot;issue-link&quot; data-issue-key=&quot;WT-8790&quot;&gt;&lt;del&gt;WT-8790&lt;/del&gt;&lt;/a&gt;, and it should be included in the next WiredTiger drop into MongoDB (which starts around 6pm NYC time each day).&lt;/p&gt;

&lt;p&gt;Let us know if we can assist in any way. &#8211; Thanks!&lt;/p&gt;</comment>
                            <comment id="4339904" author="JIRAUSER1264163" created="Mon, 7 Feb 2022 17:48:05 +0000"  >&lt;p&gt;It seems that WT is too restrictive in how it defines a write transaction. We&apos;ve opened &lt;a href=&quot;https://jira.mongodb.org/browse/WT-8790&quot; title=&quot;Only allow read-only transactions in reset_snapshot&quot; class=&quot;issue-link&quot; data-issue-key=&quot;WT-8790&quot;&gt;&lt;del&gt;WT-8790&lt;/del&gt;&lt;/a&gt; in order to fix it.&lt;/p&gt;</comment>
                            <comment id="4277250" author="alexander.gorrod" created="Wed, 5 Jan 2022 20:57:11 +0000"  >&lt;p&gt;A vote in favor of getting this done quickly. Making this change will allow WiredTiger to remove an API that, if misused, could lead to incorrect data being returned to readers.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="1978696">WT-8790</issuekey>
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                            <issuelinktype id="10020">
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            <issuekey id="1958276">WT-8626</issuekey>
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