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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>
    </build-info>


<item>
            <title>[SERVER-32468] Use a 1-node CSRS in non-stepdown sharding passthroughs tests</title>
                <link>https://jira.mongodb.org/browse/SERVER-32468</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Akin to the idea behind &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31670&quot; title=&quot;Change replica set fixture used by replica_sets_jscore_passthrough to make its secondary have zero votes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31670&quot;&gt;&lt;del&gt;SERVER-31670&lt;/del&gt;&lt;/a&gt; of reducing the number of unexpected elections observed in our tests, I&apos;d like to propose that we use&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;a 3-node CSRS where all nodes have votes=1 and priority=1 when the test suite attempts to step down the CSRS primary, and&lt;/li&gt;
	&lt;li&gt;a 1-node CSRS for all other cases.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;This would mean the following test suites would run with a 1-node CSRS&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;&lt;tt&gt;aggregation_sharded_collections_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;causally_consistent_jscore_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;causally_consistent_jscore_passthrough_auth.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;change_streams_mongos_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;change_streams_sharded_collections_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;change_streams_secondary_reads.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;integration_tests_sharded.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;jstestfuzz_sharded.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;jstestfuzz_sharded_causal_consistency.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;jstestfuzz_sharded_session.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;sharded_causally_consistent_jscore_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;sharded_collections_jscore_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;sharding_gle_auth_basics_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;sharding_jscore_op_query_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;sharding_jscore_passthrough.yml&lt;/tt&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;and only &lt;tt&gt;jstestfuzz_sharded_continuous_stepdown.yml&lt;/tt&gt; would continue to use a 3-node replica set. Is the Sharding team agreeable to this proposal? I&apos;d also be curious to know if this is something we&apos;d consider doing for sharding-related tests that aren&apos;t interested in specifically how collection metadata operates are processed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="476527">SERVER-32468</key>
            <summary>Use a 1-node CSRS in non-stepdown sharding passthroughs tests</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="robert.guo@mongodb.com">Robert Guo</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Wed, 27 Dec 2017 21:16:18 +0000</created>
                <updated>Mon, 30 Oct 2023 23:09:41 +0000</updated>
                            <resolved>Fri, 26 Jan 2018 16:20:33 +0000</resolved>
                                                    <fixVersion>3.6.3</fixVersion>
                    <fixVersion>3.7.2</fixVersion>
                                    <component>Sharding</component>
                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1806155" author="xgen-internal-githook" created="Wed, 14 Feb 2018 21:34:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;robert.guo@10gen.com&apos;, &apos;name&apos;: &apos;Robert Guo&apos;, &apos;username&apos;: &apos;guoyr&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32468&quot; title=&quot;Use a 1-node CSRS in non-stepdown sharding passthroughs tests&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32468&quot;&gt;&lt;del&gt;SERVER-32468&lt;/del&gt;&lt;/a&gt; Use a 1-node CSRS in non-stepdown sharding passthroughs tests&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 0aeb5ce7e8d4a190dac43fd110533eef149f7880)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/47fc424ca082fc11d04fe0dedc550a3b87e689c5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/47fc424ca082fc11d04fe0dedc550a3b87e689c5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1786032" author="xgen-internal-githook" created="Fri, 26 Jan 2018 16:20:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Robert Guo&apos;, &apos;email&apos;: &apos;robert.guo@10gen.com&apos;, &apos;username&apos;: &apos;guoyr&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32468&quot; title=&quot;Use a 1-node CSRS in non-stepdown sharding passthroughs tests&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32468&quot;&gt;&lt;del&gt;SERVER-32468&lt;/del&gt;&lt;/a&gt; Use a 1-node CSRS in non-stepdown sharding passthroughs tests&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0aeb5ce7e8d4a190dac43fd110533eef149f7880&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0aeb5ce7e8d4a190dac43fd110533eef149f7880&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1760602" author="kyle.suarez" created="Thu, 28 Dec 2017 05:16:54 +0000"  >&lt;p&gt;Another benefit is that I find the tests to go faster as well, and tend to use only 1 node in the CSRS when doing local testing (Charlie&apos;s suggestion).&lt;/p&gt;</comment>
                            <comment id="1760441" author="max.hirschhorn@10gen.com" created="Wed, 27 Dec 2017 21:36:48 +0000"  >&lt;p&gt;Thanks &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kaloian.manassiev&quot; class=&quot;user-hover&quot; rel=&quot;kaloian.manassiev&quot;&gt;kaloian.manassiev&lt;/a&gt;, I moved this back to TIG since we can make the necessary changes to resmoke.py now that I&apos;ve gotten your confirmation.&lt;/p&gt;</comment>
                            <comment id="1760428" author="kaloian.manassiev" created="Wed, 27 Dec 2017 21:30:54 +0000"  >&lt;p&gt;I don&apos;t see any problem with doing that for the passthrough tests - it sounds like a good idea to me, from efficiency point of view. All the config server features should work just fine with a single node in the set.&lt;/p&gt;

&lt;p&gt;As for the dedicated sharding suites - we have always been saying that &quot;if it is failing in Evergreen due to slow machine, chances are that customers are experiencing the same problems&quot;, so this would force us to make the product better&quot;. However, I think overwhelming majority of the build failures we are getting are just noise in the tests.&lt;/p&gt;

&lt;p&gt;Based on this, I am fine with doing it for the dedicated sharding tests, other than the step down suite.&lt;/p&gt;</comment>
                    </comments>
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                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="714469">SERVER-40063</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="487875">SERVER-32920</issuekey>
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