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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>[SERVER-78803] Introduce maxPreviousTime parameter to setClusterParameter command in sharded clusters</title>
                <link>https://jira.mongodb.org/browse/SERVER-78803</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="2387224">SERVER-78803</key>
            <summary>Introduce maxPreviousTime parameter to setClusterParameter command in sharded clusters</summary>
                <type id="5" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14716&amp;avatarType=issuetype">Sub-task</type>
                            <parent id="2387222">SERVER-78801</parent>
                                    <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="romans.kasperovics@mongodb.com">Romans Kasperovics</assignee>
                                    <reporter username="denis.grebennicov@mongodb.com">Denis Grebennicov</reporter>
                        <labels>
                            <label>M2</label>
                    </labels>
                <created>Mon, 10 Jul 2023 11:04:14 +0000</created>
                <updated>Fri, 5 Jan 2024 17:22:13 +0000</updated>
                            <resolved>Thu, 21 Dec 2023 21:40:32 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5966384" author="xgen-internal-githook" created="Thu, 21 Dec 2023 18:07:18 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;romanskas&apos;, &apos;email&apos;: &apos;30618745+romanskas@users.noreply.github.com&apos;, &apos;username&apos;: &apos;romanskas&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78803&quot; title=&quot;Introduce maxPreviousTime parameter to setClusterParameter command in sharded clusters&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78803&quot;&gt;&lt;del&gt;SERVER-78803&lt;/del&gt;&lt;/a&gt; Reject concurrent query settings updates in sharded clusters (#17060)&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78803&quot; title=&quot;Introduce maxPreviousTime parameter to setClusterParameter command in sharded clusters&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78803&quot;&gt;&lt;del&gt;SERVER-78803&lt;/del&gt;&lt;/a&gt; Reject concurrent query settings updates in sharded&lt;br/&gt;
clusters&lt;/p&gt;

&lt;p&gt;Until now, a new value of a cluster parameter was just replacing the old&lt;br/&gt;
one.&lt;br/&gt;
For the query settings project it is important to read / modify / write&lt;br/&gt;
cluster parameter values. In this scenario, concurrent calls of&lt;br/&gt;
setQuerySettings command may lead to seemingly successful, but incorrect&lt;br/&gt;
results.&lt;br/&gt;
This commit introduces an additional &apos;previousTime&apos; parameter to ensure&lt;br/&gt;
that the cluster parameter value that was read has not changed at the&lt;br/&gt;
time&lt;br/&gt;
of writing, otherwise the operation must fail.&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78802&quot; title=&quot;Introduce maxPreviousTime parameter to setClusterParameter command in replica set&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78802&quot;&gt;&lt;del&gt;SERVER-78802&lt;/del&gt;&lt;/a&gt; has added the &apos;previousTime&apos; parameter and the related&lt;br/&gt;
check&lt;br/&gt;
for replica set deployments. This change is adding the check to sharded&lt;br/&gt;
cluster&lt;br/&gt;
deployments.&lt;br/&gt;
As of now, the optional &apos;previousTime&apos; parameter is only being used by&lt;br/&gt;
the&lt;br/&gt;
query settings command. The design consideration for this new parameter&lt;br/&gt;
and&lt;br/&gt;
the related check are described in the design document attached to the&lt;br/&gt;
parent&lt;br/&gt;
ticket &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78801&quot; title=&quot;Ensure cluster-wide parameters mechanism correctness (when working with query settings parameter)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78801&quot;&gt;&lt;del&gt;SERVER-78801&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: f5f35648c676f7dd132ba69d34bbd5251b71a2e1&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6b1483403eebc2307ac32b211bad863e21970a45&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6b1483403eebc2307ac32b211bad863e21970a45&lt;/a&gt;&lt;/p&gt;</comment>
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