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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-54074] [v4.0] Log start and end of changes to table log settings</title>
                <link>https://jira.mongodb.org/browse/SERVER-54074</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Under some circumstances we can change the table log (journaling) settings of every table on startup, and this can take a long time if the user has a lot of tables. This occurs in particular in conjunction with enableReadConcerMajority settings. We should log the start and end of this activity so that users and MongoDB support know why startup is slow.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1602020">SERVER-54074</key>
            <summary>[v4.0] Log start and end of changes to table log settings</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="bruce.lucas@mongodb.com">Bruce Lucas</reporter>
                        <labels>
                    </labels>
                <created>Wed, 27 Jan 2021 16:01:09 +0000</created>
                <updated>Sun, 29 Oct 2023 21:58:20 +0000</updated>
                            <resolved>Thu, 4 Feb 2021 00:59:15 +0000</resolved>
                                    <version>4.0.22</version>
                                    <fixVersion>4.0.23</fixVersion>
                                    <component>Diagnostics</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="3598451" author="xgen-internal-githook" created="Thu, 4 Feb 2021 00:39:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-54074&quot; title=&quot;[v4.0] Log start and end of changes to table log settings&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-54074&quot;&gt;&lt;del&gt;SERVER-54074&lt;/del&gt;&lt;/a&gt; Log start and end of changes to table log settings&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/95d8e9e4ecbc53daad0dd637da8ac85931ff2b04&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/95d8e9e4ecbc53daad0dd637da8ac85931ff2b04&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3587578" author="gregory.wlodarek" created="Thu, 28 Jan 2021 16:52:21 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43664&quot; title=&quot;Speedup WiredTiger storage engine startup for many tables by optimizing WiredTigerUtil::setTableLogging()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43664&quot;&gt;&lt;del&gt;SERVER-43664&lt;/del&gt;&lt;/a&gt;, which has been backported all the way to v4.2, already logs a message if and when the table logging settings are being changed. &lt;a href=&quot;https://github.com/mongodb/mongo/blob/da30ce1eb1884dd54bcb005da128b43ef4038bbf/src/mongo/db/storage/wiredtiger/wiredtiger_util.cpp#L764-L779&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/da30ce1eb1884dd54bcb005da128b43ef4038bbf/src/mongo/db/storage/wiredtiger/wiredtiger_util.cpp#L764-L779&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;I&apos;m going to make this a v4.0 ticket to add some logging there.&lt;/p&gt;</comment>
                            <comment id="3585071" author="bruce.lucas@10gen.com" created="Wed, 27 Jan 2021 16:04:07 +0000"  >&lt;p&gt;This will hit every PSA customer due to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53247&quot; title=&quot;Disable enableMajorityReadConcern:false&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53247&quot;&gt;&lt;del&gt;SERVER-53247&lt;/del&gt;&lt;/a&gt;, so I think it would be good to have it in 5.0.&lt;/p&gt;</comment>
                            <comment id="3585070" author="gregory.wlodarek" created="Wed, 27 Jan 2021 16:04:04 +0000"  >&lt;p&gt;The table logging settings change under these circumstances:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;(v4.0+) Switching between eMRC=on and eMRC=off for replica sets.&lt;/li&gt;
	&lt;li&gt;(v4.0+) Switching between standalone mode and replica set mode running on eMRC=on.&lt;/li&gt;
	&lt;li&gt;Upgrading from 3.6 to 4.0 with eMRC=on.&lt;/li&gt;
&lt;/ul&gt;
</comment>
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