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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-34146] OpObserver should cause secondary to invalidate in-memory cache entry for db</title>
                <link>https://jira.mongodb.org/browse/SERVER-34146</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In order for a secondary to invalidate its in-memory cache entry for a database, we need to add OpObservers to watch for a db refresh.&lt;/p&gt;

&lt;p&gt;This is the chain of events we expect to happen:&lt;br/&gt;
1) entering movePrimary critical section increments &apos;enterCriticalSectionSignal&apos; field in the document in config.cache.databases&lt;br/&gt;
2) secondary replicates the update, &lt;b&gt;OpObserver causes it to clear its in-memory cached database entry&lt;/b&gt;&lt;br/&gt;
3) the next request with databaseVersion that comes into the secondary will make the secondary try to refresh because its in-memory cached entry is empty&lt;br/&gt;
4) the secondary&apos;s refresh will&lt;br/&gt;
        a) call forceDatabaseCacheUpdates on the primary, which blocks behind the critical section and then forces the primary to do a remote refresh&lt;br/&gt;
        b) wait for replication of the writes from the refresh&lt;br/&gt;
        c) read the updated database entry from disk (now that it has replicated)&lt;/p&gt;</description>
                <environment></environment>
        <key id="517345">SERVER-34146</key>
            <summary>OpObserver should cause secondary to invalidate in-memory cache entry for db</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="janna.golden@mongodb.com">Janna Golden</assignee>
                                    <reporter username="janna.golden@mongodb.com">Janna Golden</reporter>
                        <labels>
                    </labels>
                <created>Tue, 27 Mar 2018 15:22:13 +0000</created>
                <updated>Sun, 29 Oct 2023 22:33:19 +0000</updated>
                            <resolved>Wed, 11 Apr 2018 16:45:50 +0000</resolved>
                                                    <fixVersion>3.7.4</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1861680" author="xgen-internal-githook" created="Wed, 11 Apr 2018 18:07:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;name&apos;: &apos;jannaerin&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34146&quot; title=&quot;OpObserver should cause secondary to invalidate in-memory cache entry for db&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34146&quot;&gt;&lt;del&gt;SERVER-34146&lt;/del&gt;&lt;/a&gt; Remove deleted test from blacklist&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/48bafb9e1c0c5213310f498712f930b836a6ee19&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/48bafb9e1c0c5213310f498712f930b836a6ee19&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1861535" author="xgen-internal-githook" created="Wed, 11 Apr 2018 16:23:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;name&apos;: &apos;jannaerin&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34146&quot; title=&quot;OpObserver should cause secondary to invalidate in-memory cache entry for db&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34146&quot;&gt;&lt;del&gt;SERVER-34146&lt;/del&gt;&lt;/a&gt; OpObserver should cause secondaries to invalidate their in-memory cache entry for a db&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b9354980a1f3d215640e67afcf780f10612694d5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b9354980a1f3d215640e67afcf780f10612694d5&lt;/a&gt;&lt;/p&gt;</comment>
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