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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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            <title>[SERVER-37671] Log when we are unable to kill a session due to a prepared transaction</title>
                <link>https://jira.mongodb.org/browse/SERVER-37671</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If a coordinator shard goes down, leaving participants with prepared transactions, the operator should have some way of knowing that there is transaction state to clean up, even if the transaction state does not create cache pressure or block other operations.&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36499&quot; title=&quot;currentOp support for prepared transactions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36499&quot;&gt;&lt;del&gt;SERVER-36499&lt;/del&gt;&lt;/a&gt; will ensure that you can see how long a transaction has been in prepare in the &lt;tt&gt;currentOp&lt;/tt&gt; output, but it would also be helpful to log when a transaction has been in prepare for &quot;too long&quot;. We can log a message when the transaction timeout thread or the session reaper is unable to clean up a transaction because it is in prepare. The transaction timeout thread runs every 30 seconds by default and the session reaper runs every 5 minutes by default, so these log messages will not be too frequent. The log message should say how long the transaction has been in the prepare state.&lt;/p&gt;</description>
                <environment></environment>
        <key id="621785">SERVER-37671</key>
            <summary>Log when we are unable to kill a session due to a prepared transaction</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="tess.avitabile@mongodb.com">Tess Avitabile</reporter>
                        <labels>
                            <label>former-quick-wins</label>
                            <label>prepare_diagnostics</label>
                            <label>prepare_optional</label>
                    </labels>
                <created>Fri, 19 Oct 2018 18:05:03 +0000</created>
                <updated>Tue, 6 Dec 2022 03:15:20 +0000</updated>
                                                                            <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2039252" author="tess.avitabile" created="Tue, 23 Oct 2018 15:57:16 +0000"  >&lt;p&gt;That&apos;s a good point. For historical information, it would be useful to have this logged.&lt;/p&gt;</comment>
                            <comment id="2039189" author="jonathan.balsano" created="Tue, 23 Oct 2018 15:34:57 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tess.avitabile&quot; class=&quot;user-hover&quot; rel=&quot;tess.avitabile&quot;&gt;tess.avitabile&lt;/a&gt; You may already be thinking about this but I want to call out that Monitoring doesn&apos;t retain historical information about currentOp, so it may benefit TSEs to have this logged in case it needs to be correlated with another issue?&lt;/p&gt;</comment>
                            <comment id="2036373" author="tess.avitabile" created="Fri, 19 Oct 2018 19:28:21 +0000"  >&lt;p&gt;This may not be necessary, since &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=jonathan.balsano&quot; class=&quot;user-hover&quot; rel=&quot;jonathan.balsano&quot;&gt;jonathan.balsano&lt;/a&gt; thinks the work in&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36499&quot; title=&quot;currentOp support for prepared transactions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36499&quot;&gt;&lt;del&gt;SERVER-36499&lt;/del&gt;&lt;/a&gt;&#160;may be sufficient.&lt;/p&gt;</comment>
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            <issuekey id="584977">SERVER-36485</issuekey>
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