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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-11750] Option to Disable Journaling during Initial Sync</title>
                <link>https://jira.mongodb.org/browse/SERVER-11750</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Performance of initial sync could be improved if we temporarily disable journaling while performing the non-recoverable stages of the sync.&lt;/p&gt;

&lt;p&gt;In this case I cannot see a risk of data loss as the recovery mode for these failed initial sync&apos;s is simply to restart.&lt;/p&gt;</description>
                <environment></environment>
        <key id="98661">SERVER-11750</key>
            <summary>Option to Disable Journaling during Initial Sync</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="9">Done</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="david.hows">David Hows</reporter>
                        <labels>
                            <label>former-quick-wins</label>
                            <label>initialSync</label>
                    </labels>
                <created>Sun, 17 Nov 2013 22:25:19 +0000</created>
                <updated>Tue, 6 Dec 2022 05:14:53 +0000</updated>
                            <resolved>Wed, 1 May 2019 15:35:36 +0000</resolved>
                                                                    <component>Performance</component>
                    <component>Replication</component>
                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="2230595" author="milkie" created="Wed, 1 May 2019 15:35:36 +0000"  >&lt;p&gt;Judah, you&apos;re correct in suspecting this will no longer be a win now that mmapV1 is gone.  Since we no longer log data tables, only the oplog, turning off journaling would have little impact but a lot of code complication, so the benefit isn&apos;t worth it.&lt;/p&gt;</comment>
                            <comment id="2229109" author="judah.schvimer" created="Tue, 30 Apr 2019 14:14:39 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=milkie&quot; class=&quot;user-hover&quot; rel=&quot;milkie&quot;&gt;milkie&lt;/a&gt;, is the above comment still true with WT and the current Storage Engine API?&lt;/p&gt;</comment>
                            <comment id="511474" author="milkie" created="Fri, 7 Mar 2014 15:00:26 +0000"  >&lt;p&gt;Actually what would happen if a crash occurred during initial sync is that the database files would be corrupt and it wouldn&apos;t be possible to restart mongod without manual intervention by the user.  It&apos;s true that there would be no data loss however.&lt;/p&gt;</comment>
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