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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-36964] Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.</title>
                <link>https://jira.mongodb.org/browse/SERVER-36964</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Problem&quot;&gt;&lt;/a&gt;Problem&lt;/h2&gt;
&lt;p&gt;In the LogicalSessionCache on replica sets, both primaries and secondaries attempt to create the sessions collection or its indexes. The secondary should only check that the collection and indexes exist before performing operations. The primary will be responsible for both creating the collection and ensuring that the indexes exist.&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;ProposedFix&quot;&gt;&lt;/a&gt;Proposed Fix&lt;/h2&gt;
&lt;ol&gt;
	&lt;li&gt;In SessionsCollection::setupSessionsCollection, have secondaries instead check for collection and index existence. If either doesn&apos;t exist, return an error status. Otherwise, continue.&lt;/li&gt;
&lt;/ol&gt;

</description>
                <environment></environment>
        <key id="598192">SERVER-36964</key>
            <summary>Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.</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="blake.oler@mongodb.com">Blake Oler</assignee>
                                    <reporter username="blake.oler@mongodb.com">Blake Oler</reporter>
                        <labels>
                    </labels>
                <created>Fri, 31 Aug 2018 18:33:53 +0000</created>
                <updated>Mon, 8 Jan 2024 15:23:08 +0000</updated>
                            <resolved>Sat, 13 Oct 2018 21:54:32 +0000</resolved>
                                    <version>3.6.7</version>
                    <version>4.0.2</version>
                    <version>4.1.2</version>
                                    <fixVersion>3.6.9</fixVersion>
                    <fixVersion>4.0.4</fixVersion>
                    <fixVersion>4.1.5</fixVersion>
                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="2039472" author="xgen-internal-githook" created="Tue, 23 Oct 2018 17:46:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Blake Oler&apos;, &apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36964&quot; title=&quot;Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36964&quot;&gt;&lt;del&gt;SERVER-36964&lt;/del&gt;&lt;/a&gt; Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit c388d2db35d576862ebf42758686df340bc0bb9f)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3bf02defe2e16b9de339fca4717d3d65ee779eac&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3bf02defe2e16b9de339fca4717d3d65ee779eac&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2038443" author="xgen-internal-githook" created="Mon, 22 Oct 2018 22:09:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Blake Oler&apos;, &apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36964&quot; title=&quot;Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36964&quot;&gt;&lt;del&gt;SERVER-36964&lt;/del&gt;&lt;/a&gt; Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 6894b72f134534c3739a66ed9eee11e265b9c1e1)&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c388d2db35d576862ebf42758686df340bc0bb9f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c388d2db35d576862ebf42758686df340bc0bb9f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2032255" author="xgen-internal-githook" created="Sat, 13 Oct 2018 21:54:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Blake Oler&apos;, &apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36964&quot; title=&quot;Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36964&quot;&gt;&lt;del&gt;SERVER-36964&lt;/del&gt;&lt;/a&gt; Prevent secondaries in SessionsCollectionRS from attempting to set up the sessions collection.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6894b72f134534c3739a66ed9eee11e265b9c1e1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6894b72f134534c3739a66ed9eee11e265b9c1e1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2019150" author="misha.tyulenev" created="Mon, 1 Oct 2018 15:08:50 +0000"  >&lt;p&gt;how do you check for the index? Also if an index exists does it imply the collection also exists?&lt;/p&gt;</comment>
                            <comment id="1995658" author="misha.tyulenev" created="Thu, 6 Sep 2018 19:47:36 +0000"  >&lt;p&gt;The approach lgtm&lt;/p&gt;</comment>
                            <comment id="1995600" author="blake.oler" created="Thu, 6 Sep 2018 19:15:04 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mira.carey%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;mira.carey@mongodb.com&quot;&gt;mira.carey@mongodb.com&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=misha.tyulenev&quot; class=&quot;user-hover&quot; rel=&quot;misha.tyulenev&quot;&gt;misha.tyulenev&lt;/a&gt; I updated the proposed fix in the description. Let me know if you ack&lt;/p&gt;</comment>
                            <comment id="1994088" author="blake.oler" created="Wed, 5 Sep 2018 17:26:24 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=misha.tyulenev&quot; class=&quot;user-hover&quot; rel=&quot;misha.tyulenev&quot;&gt;misha.tyulenev&lt;/a&gt; updated the approach. It tweaks the way the inheritance structure works, so want to get your lgtm on this before building it out.&lt;/p&gt;</comment>
                            <comment id="1991133" author="misha.tyulenev" created="Fri, 31 Aug 2018 18:45:50 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=blake.oler&quot; class=&quot;user-hover&quot; rel=&quot;blake.oler&quot;&gt;blake.oler&lt;/a&gt; all operation should return same error: e.g. Status (ErrorCode::LockBusy) and the caller can then deal with it.&lt;/p&gt;</comment>
                            <comment id="1991116" author="blake.oler" created="Fri, 31 Aug 2018 18:35:56 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=misha.tyulenev&quot; class=&quot;user-hover&quot; rel=&quot;misha.tyulenev&quot;&gt;misha.tyulenev&lt;/a&gt; you mentioned in discussion about this issue in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36923&quot; title=&quot;Scoped connections not being returned from Logical Sessions Cache machinery&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36923&quot;&gt;&lt;del&gt;SERVER-36923&lt;/del&gt;&lt;/a&gt; that an unsuccessful mutex lock should return instead of blocking. Should this apply to all operations (refresh, remove, setup, et al.) or do you prefer the behavior be configurable based on the operation to be done?&lt;/p&gt;</comment>
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            <issuekey id="597929">SERVER-36954</issuekey>
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