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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-44359] Race between oplog visibility thread and timestamped inserts in dbtest repl</title>
                <link>https://jira.mongodb.org/browse/SERVER-44359</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There was a race between the background &lt;tt&gt;WTOplogJournalThread&lt;/tt&gt; and the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/d49bdf97448af6c260705f966a3f0e1a17e5f365/src/mongo/dbtests/repltests.cpp#L1321-L1323&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;test running inserts&lt;/a&gt;. The inserts &lt;a href=&quot;https://github.com/mongodb/mongo/blob/d49bdf97448af6c260705f966a3f0e1a17e5f365/src/mongo/dbtests/repltests.cpp#L297&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;set the WT transaction timestamp&lt;/a&gt; to Timestamp(1, 1) and that was &lt;a href=&quot;https://github.com/mongodb/mongo/blob/d49bdf97448af6c260705f966a3f0e1a17e5f365/src/third_party/wiredtiger/src/txn/txn_timestamp.c#L274-L276&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;why &lt;tt&gt;query_timestamp&lt;/tt&gt; returned Timestamp(1, 0)&lt;/a&gt;. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42497&quot; title=&quot;Detect/log unintentional untimestamped writes to catalog table&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42497&quot;&gt;&lt;del&gt;SERVER-42497&lt;/del&gt;&lt;/a&gt; added the &lt;tt&gt;setTimestamp&lt;/tt&gt; call to the inserts.&lt;/p&gt;

&lt;p&gt;In production we don&apos;t have any logic that sets timestamps to anything other than what the LogicalClock timestamp generator gives us, so this race cannot occur in production. Ideally, no dbtest would explicitly set the timestamps backwards like this.&lt;/p&gt;</description>
                <environment></environment>
        <key id="987315">SERVER-44359</key>
            <summary>Race between oplog visibility thread and timestamped inserts in dbtest repl</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="lingzhi.deng@mongodb.com">Lingzhi Deng</assignee>
                                    <reporter username="lingzhi.deng@mongodb.com">Lingzhi Deng</reporter>
                        <labels>
                    </labels>
                <created>Fri, 1 Nov 2019 14:21:46 +0000</created>
                <updated>Sun, 29 Oct 2023 22:15:29 +0000</updated>
                            <resolved>Sat, 2 Nov 2019 03:01:13 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2515139" author="xgen-internal-githook" created="Sat, 2 Nov 2019 02:32:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Lingzhi Deng&apos;, &apos;username&apos;: &apos;ldennis&apos;, &apos;email&apos;: &apos;lingzhi.deng@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44359&quot; title=&quot;Race between oplog visibility thread and timestamped inserts in dbtest repl&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44359&quot;&gt;&lt;del&gt;SERVER-44359&lt;/del&gt;&lt;/a&gt;: Fix race between oplog visibility thread and timestamped inserts in dbtest repl&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1514bfc14ba56a7d991dea02f4af9b0137b4444e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1514bfc14ba56a7d991dea02f4af9b0137b4444e&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="978487">SERVER-44196</issuekey>
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