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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>[DOCS-12189] Docs for SERVER-36501: serverStatus support for prepared transactions</title>
                <link>https://jira.mongodb.org/browse/DOCS-12189</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;
&lt;blockquote&gt;
&lt;h3&gt;&lt;a name=&quot;Description%3A&quot;&gt;&lt;/a&gt;Description: &lt;/h3&gt;

&lt;p&gt;Added 5 new fields to serverStatus.transactions:&lt;/p&gt;

&lt;p&gt;totalPrepared (type: long, default: 0) - the total number of prepared transactions since the last server startup.&lt;/p&gt;

&lt;p&gt;totalPreparedThenCommitted (type: long, default: 0) - the total number of prepared transaction commits.&lt;/p&gt;

&lt;p&gt;totalPreparedThenAborted (type: long, default: 0) - the total number of prepared transaction aborts.&lt;/p&gt;

&lt;p&gt;currentPrepared (type: long, default: 0) - the current number of transactions in the prepared state.&lt;/p&gt;

&lt;p&gt;oldestActiveOplogEntryOpTime (type: timestamp, default: Timestamp(0, 0)) - the optime of the oldest oplog entry for any active transaction.&lt;/p&gt;


&lt;h3&gt;&lt;a name=&quot;EngineeringTicketDescription%3A&quot;&gt;&lt;/a&gt;Engineering Ticket Description:&lt;/h3&gt;

&lt;p&gt;Similar to the transactions diagnostics project, we want to maintain certain metrics in the serverStatus section. The &lt;tt&gt;TransactionsSSS::generateSection&lt;/tt&gt; method returns a BSON object that goes into the &lt;tt&gt;transactions&lt;/tt&gt; section of the &lt;tt&gt;serverStatus&lt;/tt&gt; output.&lt;/p&gt;

&lt;p&gt;This ticket can be split into multiple commits if needed. We will want to output:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;the total number of prepared transactions&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;the total number of committed prepared transactions&lt;/li&gt;
	&lt;li&gt;the total number of aborted prepared transactions&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;We will need to add these counters to ServerTransactionMetrics and the &lt;tt&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/4cee07d8a97bb0663e7bfbc3f2e1fbf539140adf/src/mongo/db/transactions_stats.idl&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;transactions_stats.idl&lt;/a&gt;&lt;/tt&gt; class, so that we can serialize these counters to the serverStatus output object in the &lt;tt&gt;TransactionsSSS::generateSection&lt;/tt&gt; method.&lt;/p&gt;

&lt;p&gt;We will also update the TransactionMetricsObserver to increment/decrement the stats when appropriate.&lt;/p&gt;&lt;/blockquote&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;p&gt;serverStatus page only &lt;/p&gt;

&lt;p&gt;When we doc 2-phase commits, that will contain more info and affect more pages&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="630466">DOCS-12189</key>
            <summary>Docs for SERVER-36501: serverStatus support for prepared transactions</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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="kay.kim@mongodb.com">Kay Kim</reporter>
                        <labels>
                            <label>prepare_diagnostics</label>
                    </labels>
                <created>Wed, 7 Nov 2018 23:52:21 +0000</created>
                <updated>Mon, 13 Nov 2023 18:29:20 +0000</updated>
                            <resolved>Fri, 9 Nov 2018 20:59:54 +0000</resolved>
                                                    <fixVersion>4.1.5</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2057652" author="xgen-internal-githook" created="Fri, 9 Nov 2018 20:58:54 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;kay&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;, &apos;username&apos;: &apos;kay-kim&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12189&quot; title=&quot;Docs for SERVER-36501: serverStatus support for prepared transactions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12189&quot;&gt;&lt;del&gt;DOCS-12189&lt;/del&gt;&lt;/a&gt;: serverStatus transactions.prepared metrics&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/f94599415f796724e8b3cab50ec7b417606612e7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/f94599415f796724e8b3cab50ec7b417606612e7&lt;/a&gt;&lt;/p&gt;</comment>
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