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    <title>MongoDB Jira</title>
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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-44060] Make stats contain un-started collections and databases</title>
                <link>https://jira.mongodb.org/browse/SERVER-44060</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In 4.2, the database and collection stats included databases not started and collections not started in the current database.  This was broken during the refactor; we should fix that.  &lt;/p&gt;

&lt;p&gt;We should also reduce the time taken by the InitialSyncerTest GetInitialSyncProgressOmitsClonerStatsIfClonerStatsExceedBsonLimit unit test as part of this ticket.&lt;/p&gt;</description>
                <environment></environment>
        <key id="972047">SERVER-44060</key>
            <summary>Make stats contain un-started collections and databases</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="matthew.russotto@mongodb.com">Matthew Russotto</assignee>
                                    <reporter username="matthew.russotto@mongodb.com">Matthew Russotto</reporter>
                        <labels>
                    </labels>
                <created>Thu, 17 Oct 2019 14:48:51 +0000</created>
                <updated>Sun, 29 Oct 2023 22:16:02 +0000</updated>
                            <resolved>Mon, 2 Dec 2019 21:03:29 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2575184" author="xgen-internal-githook" created="Mon, 2 Dec 2019 18:50:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Matthew Russotto&apos;, &apos;username&apos;: &apos;mtrussotto&apos;, &apos;email&apos;: &apos;matthew.russotto@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44060&quot; title=&quot;Make stats contain un-started collections and databases&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44060&quot;&gt;&lt;del&gt;SERVER-44060&lt;/del&gt;&lt;/a&gt; Make stats contain un-started collections and databases.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4a57893567fc15eda83950bd429abadafbd8c190&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4a57893567fc15eda83950bd429abadafbd8c190&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2547676" author="matthew.russotto" created="Mon, 18 Nov 2019 20:43:46 +0000"  >&lt;p&gt;Original description:&lt;br/&gt;
The initial syncer has a very deep locking graph.  This is caused by trying to get the statistics, which requires locking the initial syncer and each of the three cloners in turn.  If we move the statistics to InitialSyncSharedData and use the InitialSyncSharedData lock to control access, we can simplify the locking.&lt;/p&gt;

&lt;hr /&gt;
&lt;p&gt;This probably isn&apos;t a good idea as described; protecting everything with one big mutex means every time we get the stats (which FTDC does regularly) we&apos;ll freeze the initial sync for the time it takes to copy all the stats, which could be a considerable amount of time for DBs with large number of collections.&lt;/p&gt;</comment>
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