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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-57662] Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache</title>
                <link>https://jira.mongodb.org/browse/SERVER-57662</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/jstests/sharding/verify_sessions_expiration_sharded.js#L35&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;verify_sessions_expiration_sharded.js&lt;/a&gt;, we refresh the logical session cache on mongos before guaranteeing that every config server node has replicated the chunk metadata associated with the sessions collection. We should either wait for the config server nodes to fully replicate the data or keep looping the mongos refresh until it is able to detect the sessions collection on the config server.&#160;&lt;/p&gt;

&lt;p&gt;Edit: Another(better) solution would be to move the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5cd54b7c2f3e14e8a103ba24fbdb2d76fcb24afc/src/mongo/shell/shardingtest.js#L1928&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;cache refresh when starting up a ShardingTest&lt;/a&gt;&#160;above &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5cd54b7c2f3e14e8a103ba24fbdb2d76fcb24afc/src/mongo/shell/shardingtest.js#L1912-L1917&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this line&lt;/a&gt;&#160;to guarantee that each of the config server nodes has refreshed their cache.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1777708">SERVER-57662</key>
            <summary>Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache</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="sanika.phanse@mongodb.com">Sanika Phanse</assignee>
                                    <reporter username="jason.zhang@mongodb.com">Jason Zhang</reporter>
                        <labels>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Fri, 11 Jun 2021 21:08:48 +0000</created>
                <updated>Sun, 29 Oct 2023 21:52:15 +0000</updated>
                            <resolved>Wed, 27 Oct 2021 20:03:06 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                    <fixVersion>4.4.13</fixVersion>
                    <fixVersion>5.0.7</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4353979" author="xgen-internal-githook" created="Mon, 14 Feb 2022 17:40:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sanika Phanse&apos;, &apos;email&apos;: &apos;sanika.phanse@mongodb.com&apos;, &apos;username&apos;: &apos;sphanse99&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57662&quot; title=&quot;Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57662&quot;&gt;&lt;del&gt;SERVER-57662&lt;/del&gt;&lt;/a&gt; Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fe1bea5e919bd5cf1d65568704f2087267706938&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fe1bea5e919bd5cf1d65568704f2087267706938&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4348126" author="xgen-internal-githook" created="Thu, 10 Feb 2022 16:31:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sanika Phanse&apos;, &apos;email&apos;: &apos;sanika.phanse@mongodb.com&apos;, &apos;username&apos;: &apos;sphanse99&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57662&quot; title=&quot;Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57662&quot;&gt;&lt;del&gt;SERVER-57662&lt;/del&gt;&lt;/a&gt; Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache&lt;/p&gt;

&lt;p&gt;(cherry picked from commit a62d27313db5da6ed0b39c23ee3d8841fe434ebe)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/36fb9989cc51747aa11ad357b089c36da1272949&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/36fb9989cc51747aa11ad357b089c36da1272949&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4244737" author="jason.zhang" created="Mon, 13 Dec 2021 18:16:33 +0000"  >&lt;p&gt;Seems like the BF occurred on v4.4 as well, I assume v5.1 and v5.0 could benefit as well. Im not too sure if v4.2 and v4.0 also need this backported&lt;/p&gt;</comment>
                            <comment id="4149522" author="xgen-internal-githook" created="Tue, 26 Oct 2021 19:40:46 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sanika Phanse&apos;, &apos;email&apos;: &apos;sanika.phanse@mongodb.com&apos;, &apos;username&apos;: &apos;sphanse99&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57662&quot; title=&quot;Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57662&quot;&gt;&lt;del&gt;SERVER-57662&lt;/del&gt;&lt;/a&gt; Wait for config.system.sessions collection to exist on the config server before refreshing logical session cache&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dc650e2689f73aa422f552e2c41afed7aceb5a29&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dc650e2689f73aa422f552e2c41afed7aceb5a29&lt;/a&gt;&lt;/p&gt;</comment>
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