<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 06:44:47 UTC 2024

It is possible to restrict the fields that are returned in this document by specifying the 'field' parameter in your request.
For example, to request only the issue key and summary append 'field=key&field=summary' to the URL of your request.
-->
<rss version="0.92" >
<channel>
    <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>
    </build-info>


<item>
            <title>[SERVER-80862] Make config.transactions a clustered collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-80862</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Original proposal:&lt;br/&gt;
Currently every time we do a retryable write, we find the _id index for the config.transactions table, look up the record ID we want to write in it, and then update the record.  But we know the _id will always be the session ID which does not change for a given TransactionParticipant, so we can cache that record ID on the participant the first time we insert or look it up, and skip the index lookup on most writes.&lt;/p&gt;

&lt;p&gt;We have to handle two exceptional cases&lt;/p&gt;

&lt;p&gt;1) The record ID no longer exists, e.g. because the session got reaped yet re-used.&lt;/p&gt;

&lt;p&gt;2) The record ID exists, but does not contain our _id value (the record ID got re-used).  I don&apos;t know if this is possible with WiredTiger but I don&apos;t think we have formal guarantees against it.&lt;/p&gt;

&lt;p&gt;In both cases we would just fall back to the slow path of doing a lookup and possibly an insert.&lt;/p&gt;

&lt;p&gt;New proposal:&lt;br/&gt;
Make the config.transactions collection clustered. This is a cleaner implementation but comes with upgrade/downgrade considerations.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2436612">SERVER-80862</key>
            <summary>Make config.transactions a clustered collection</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="james.bronsted@mongodb.com">James Bronsted</assignee>
                                    <reporter username="matthew.russotto@mongodb.com">Matthew Russotto</reporter>
                        <labels>
                            <label>perf-8.0</label>
                            <label>perf-tiger</label>
                            <label>perf-tiger-handoff</label>
                            <label>perf-tiger-poc</label>
                            <label>perf-tiger-project-candidates</label>
                            <label>perf-tiger-q4</label>
                    </labels>
                <created>Thu, 7 Sep 2023 16:09:00 +0000</created>
                <updated>Wed, 31 Jan 2024 23:01:23 +0000</updated>
                            <resolved>Tue, 23 Jan 2024 15:39:33 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="6033396" author="xgen-internal-githook" created="Tue, 23 Jan 2024 06:31:31 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;James Bronsted&apos;, &apos;email&apos;: &apos;32047428+jpbronsted@users.noreply.github.com&apos;, &apos;username&apos;: &apos;jpbronsted&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-80862&quot; title=&quot;Make config.transactions a clustered collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-80862&quot;&gt;&lt;del&gt;SERVER-80862&lt;/del&gt;&lt;/a&gt; change config.transactions to be a clustered collection (#16690)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 671bae337ecc0d269153dd749c22e4f5abcb1f57&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/473009cc3c3d190a9baa70f87a714dbd176103b3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/473009cc3c3d190a9baa70f87a714dbd176103b3&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5694992" author="matthew.russotto" created="Mon, 11 Sep 2023 17:42:39 +0000"  >&lt;p&gt;Yes, config.transactions is implicitly replicated.&lt;/p&gt;</comment>
                            <comment id="5690020" author="lingzhi.deng" created="Fri, 8 Sep 2023 15:19:40 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=george.wangensteen%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;george.wangensteen@mongodb.com&quot;&gt;george.wangensteen@mongodb.com&lt;/a&gt; I think I missed the &lt;a href=&quot;https://jira.mongodb.org/browse/PERF-4646?focusedCommentId=5686907&amp;amp;page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-5686907&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;comment&lt;/a&gt; from &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=matthew.russotto%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;matthew.russotto@mongodb.com&quot;&gt;matthew.russotto@mongodb.com&lt;/a&gt; in PERF-4646. Looks like we did a POC to cluster config.transactions there too and we saw similar gain. But as Matthew said, it will come with upgrade/downgrade implication which I think it shouldn&apos;t be too bad.&lt;/p&gt;</comment>
                            <comment id="5688305" author="jason.chan" created="Thu, 7 Sep 2023 21:36:21 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=george.wangensteen%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;george.wangensteen@mongodb.com&quot;&gt;george.wangensteen@mongodb.com&lt;/a&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=max.hirschhorn%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;max.hirschhorn@mongodb.com&quot;&gt;max.hirschhorn@mongodb.com&lt;/a&gt;, is this something we can add to PM-3326?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="2563270">SERVER-86043</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="2550719">SERVER-85423</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="2488274">SERVER-82673</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="2522020">SERVER-84073</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                                        </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>4.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18555" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname># of Sprints</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>9.0</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_12751" key="com.atlassian.jira.plugin.system.customfieldtypes:multiselect">
                        <customfieldname>Assigned Teams</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="25132"><![CDATA[Service Arch]]></customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                            <customfield id="customfield_10011" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Backwards Compatibility</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10038"><![CDATA[Fully Compatible]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Thu, 7 Sep 2023 21:36:21 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        2 weeks, 2 days ago
    
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18254" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Dependencies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue><![CDATA[]]></customfieldvalue>


                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_15850" key="com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary">
                        <customfieldname>Development</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                        <customfield id="customfield_17050" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Downstream Team Attention</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="16941"><![CDATA[Not Needed]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                        <customfield id="customfield_10857" key="com.pyxis.greenhopper.jira:gh-epic-link">
                        <customfieldname>Epic Link</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>PM-3326</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <customfield id="customfield_10057" key="com.atlassian.jira.toolkit:lastusercommented">
                        <customfieldname>Last comment by Customer</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>true</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_10056" key="com.atlassian.jira.toolkit:lastupdaterorcommenter">
                        <customfieldname>Last commenter</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>vishnu.kaushik@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            2 weeks, 2 days ago
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>xgen-internal-githook</customfieldvalue>
            <customfieldvalue>james.bronsted@mongodb.com</customfieldvalue>
            <customfieldvalue>jason.chan@mongodb.com</customfieldvalue>
            <customfieldvalue>lingzhi.deng@mongodb.com</customfieldvalue>
            <customfieldvalue>matthew.russotto@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|i2pl1b:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|i0c95z:zm</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10558" key="com.pyxis.greenhopper.jira:gh-global-rank">
                        <customfieldname>Rank (Obsolete)</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>9223372036854775807</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_22250" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Special Downgrade Instructions Required</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="23343"><![CDATA[Not Needed]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10557" key="com.pyxis.greenhopper.jira:gh-sprint">
                        <customfieldname>Sprint</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue id="7617">Service Arch 2023-10-16</customfieldvalue>
    <customfieldvalue id="7618">Service Arch 2023-10-30</customfieldvalue>
    <customfieldvalue id="7619">Service Arch 2023-11-13</customfieldvalue>
    <customfieldvalue id="7935">Service Arch 2023-11-27</customfieldvalue>
    <customfieldvalue id="7936">Service Arch 2023-12-11</customfieldvalue>
    <customfieldvalue id="7937">Service Arch 2023-12-25</customfieldvalue>
    <customfieldvalue id="8038">Service Arch 2024-01-08</customfieldvalue>
    <customfieldvalue id="8039">Service Arch 2024-01-22</customfieldvalue>
    <customfieldvalue id="8040">Service Arch 2024-02-05</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10053" key="com.atlassian.jira.ext.charting:timeinstatus">
                        <customfieldname>Time In Status</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_22870" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Triagers</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_14350" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>serverRank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|i2p76n:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                    </customfields>
    </item>
</channel>
</rss>