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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-27692] Can diagnostic data capture be stopped later in the shutdown process?</title>
                <link>https://jira.mongodb.org/browse/SERVER-27692</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Sometimes shutdown takes a long time; in these cases it&apos;s possible for the diagnostic data collection to be stopped well before the mongod actually stops. This can make it hard to figure out what&apos;s happening during the latter stages of the slow shutdown. &lt;/p&gt;

&lt;p&gt;If possible, can we make diagnostic data collection stop later in the shutdown process?&lt;/p&gt;</description>
                <environment></environment>
        <key id="345949">SERVER-27692</key>
            <summary>Can diagnostic data capture be stopped later in the shutdown process?</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="13203">Gone away</resolution>
                                        <assignee username="backlog-server-security">Backlog - Security Team</assignee>
                                    <reporter username="joanna.cheng@mongodb.com">Joanna Cheng</reporter>
                        <labels>
                            <label>SWDI</label>
                            <label>move-sec</label>
                    </labels>
                <created>Mon, 16 Jan 2017 01:13:39 +0000</created>
                <updated>Fri, 27 Oct 2023 20:44:15 +0000</updated>
                            <resolved>Mon, 11 Sep 2023 17:06:45 +0000</resolved>
                                                                    <component>Diagnostics</component>
                                        <votes>4</votes>
                                    <watches>15</watches>
                                                                                                                <comments>
                            <comment id="1525490" author="alexander.gorrod" created="Thu, 16 Mar 2017 05:09:42 +0000"  >&lt;p&gt;I&apos;ve opened &lt;a href=&quot;https://jira.mongodb.org/browse/WT-3223&quot; title=&quot;Output progress messages during long checkpoint operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;WT-3223&quot;&gt;&lt;del&gt;WT-3223&lt;/del&gt;&lt;/a&gt; to add progress messaging to WiredTiger checkpoints - since that is a different issue to continuing to capture diagnostic data during the period.&lt;/p&gt;</comment>
                            <comment id="1525417" author="john.murphy" created="Thu, 16 Mar 2017 03:30:38 +0000"  >&lt;p&gt;Every 30 seconds would be my vote, however if it&apos;s a substantial amount of data being logged 1 minute seems ideal.&lt;/p&gt;</comment>
                            <comment id="1525410" author="alexander.gorrod" created="Thu, 16 Mar 2017 03:25:33 +0000"  >&lt;p&gt;Would once per minute be a reasonable cadence for logging the additional information?&lt;/p&gt;</comment>
                            <comment id="1525403" author="john.murphy" created="Thu, 16 Mar 2017 03:17:24 +0000"  >&lt;p&gt;If WiredTiger was able to log progress during the final checkpoint (and potentially other parts of the WiredTiger engine shutdown) this would provide very useful information when troubleshooting shutdown issues.&lt;/p&gt;</comment>
                            <comment id="1477217" author="alexander.gorrod" created="Mon, 16 Jan 2017 05:49:02 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=joanna.cheng&quot; class=&quot;user-hover&quot; rel=&quot;joanna.cheng&quot;&gt;joanna.cheng&lt;/a&gt; The most common reason for shutdown to take a long time, is that the WiredTiger storage engine creates a new checkpoint on shutdown. Creating this checkpoint facilitates fast subsequent startup times, and reduces the amount of disk space required because it allows old journal files to be removed. If the user is running a workload that is IO bound it can take a long time to create the final checkpoint.&lt;/p&gt;

&lt;p&gt;It is likely that any diagnostic information capture would be unable to get further information from WiredTiger during this shutdown period, so continuing to capture diagnostic information is unlikely to be useful.&lt;/p&gt;</comment>
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            <issuekey id="1351584">SERVER-48221</issuekey>
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