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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-45228] Option to disable ReplSetTest two-stage initialization</title>
                <link>https://jira.mongodb.org/browse/SERVER-45228</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In replsettest.js, ReplSetTest starts up a single node replica set then reconfigures to the correct size (if the config contains more than 1 node), so the primary is elected more quickly.&lt;/p&gt;

&lt;p&gt;This presents a problem for TLA+ trace checking. RaftMongo.tla specifies that a server&apos;s commit point is an optime included in the server&apos;s oplog. I.e., for server s, if commitPoint&lt;span class=&quot;error&quot;&gt;&amp;#91;s&amp;#93;&lt;/span&gt; is &lt;span class=&quot;error&quot;&gt;&amp;#91;term -&amp;gt; t, index-&amp;gt; i&amp;#93;&lt;/span&gt;, then Len(log&lt;span class=&quot;error&quot;&gt;&amp;#91;s&amp;#93;&lt;/span&gt;) &amp;gt;= i and log&lt;span class=&quot;error&quot;&gt;&amp;#91;s&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;i&amp;#93;&lt;/span&gt; == t.&lt;/p&gt;

&lt;p&gt;When TLA+ trace logging is enabled, the server logs its commit point and the &lt;b&gt;visible&lt;/b&gt; contents of the oplog whenever it executes a TLA+ action. The member of a one-node set can advance the commit point beyond the visible timestamp, leading to a weird log line: the commit point is &lt;b&gt;beyond&lt;/b&gt; all optimes in the oplog.&lt;/p&gt;

&lt;p&gt;For now, let&apos;s not support one-node sets with TLA+ trace checking. Let&apos;s add an JSTest TestData option that disables the two-stage initialization so that we don&apos;t pass through the one-node config when we initialize a set for trace checking.&lt;/p&gt;

&lt;p&gt;This is not a hard requirement for the trace checking project. We could choose to trace check only replica sets started for fuzz testing by replicaset.py instead of ReplSetTest.js. However, it would be broadly useful to check execution traces from our existing JSTests.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1059558">SERVER-45228</key>
            <summary>Option to disable ReplSetTest two-stage initialization</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="jesse@mongodb.com">A. Jesse Jiryu Davis</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Wed, 18 Dec 2019 15:44:17 +0000</created>
                <updated>Fri, 7 Feb 2020 16:44:34 +0000</updated>
                            <resolved>Fri, 7 Feb 2020 16:44:34 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2819191" author="jesse" created="Thu, 6 Feb 2020 22:39:16 +0000"  >&lt;p&gt;This is no longer needed, we&apos;re stopping implementation of TLA+ trace checking. If we decided we need to disable two-stage initialization for some reason in the future, the change is in &lt;tt&gt;initiateWithAnyNodeAsPrimary&lt;/tt&gt; in replsettest.js, near the comment &quot;Start up a single node replica set then reconfigure to the correct size&quot;.&lt;/p&gt;</comment>
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