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<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-53886] jstestfuzz (mutational) fuzzer is forcing latest FCV during validate in multiversion tests</title>
                <link>https://jira.mongodb.org/browse/SERVER-53886</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The jstestfuzz*.yml changes in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53359&quot; title=&quot;jstestfuzz (mutational) fuzzer is forcing last-lts FCV during validate instead of latest&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53359&quot;&gt;&lt;del&gt;SERVER-53359&lt;/del&gt;&lt;/a&gt; resulted in the fuzzer tests using the &lt;tt&gt;latest&lt;/tt&gt;&#160;FCV (currently 4.9) in non-multiversion fuzzer test runs. Unfortunately, these configuration changes also affect the multiversion suites where &lt;tt&gt;last-lts&lt;/tt&gt; might be a more suitable FCV to use during validate.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1594068">SERVER-53886</key>
            <summary>jstestfuzz (mutational) fuzzer is forcing latest FCV during validate in multiversion tests</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="mikhail.shchatko@mongodb.com">Mikhail Shchatko</assignee>
                                    <reporter username="benety.goh@mongodb.com">Benety Goh</reporter>
                        <labels>
                            <label>tig-multiversion</label>
                    </labels>
                <created>Tue, 19 Jan 2021 18:50:58 +0000</created>
                <updated>Sun, 29 Oct 2023 21:58:39 +0000</updated>
                            <resolved>Wed, 27 Oct 2021 09:03:01 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4150879" author="xgen-internal-githook" created="Wed, 27 Oct 2021 09:01:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Mikhail Shchatko&apos;, &apos;email&apos;: &apos;mikhail.shchatko@mongodb.com&apos;, &apos;username&apos;: &apos;MikhailShchatko&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53886&quot; title=&quot;jstestfuzz (mutational) fuzzer is forcing latest FCV during validate in multiversion tests&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53886&quot;&gt;&lt;del&gt;SERVER-53886&lt;/del&gt;&lt;/a&gt; Don&apos;t force latest FCV during validate in jstestfuzz multiversion tests&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dbc4453af53117b246b65541a84241a1ac044c17&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dbc4453af53117b246b65541a84241a1ac044c17&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4077598" author="robert.guo" created="Wed, 22 Sep 2021 15:05:19 +0000"  >&lt;p&gt;Going to have to bump this out again. We still need to wait on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55857&quot; title=&quot;Support loading generated suites in resmoke.py for evergreen tasks&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55857&quot;&gt;&lt;del&gt;SERVER-55857&lt;/del&gt;&lt;/a&gt; so multiversion tasks and fuzzer tasks are not mutually exclusively generated.&lt;/p&gt;</comment>
                            <comment id="3905942" author="robert.guo" created="Mon, 28 Jun 2021 19:20:47 +0000"  >&lt;p&gt;There seems to be some errors in the multiversion task generation logic for fuzzers. I didn&apos;t look into it further since this code will largely be rewritten in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57003&quot; title=&quot;Generate all tasks for a build variant in a single task&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57003&quot;&gt;&lt;del&gt;SERVER-57003&lt;/del&gt;&lt;/a&gt;. FYI &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.bradford&quot; class=&quot;user-hover&quot; rel=&quot;david.bradford&quot;&gt;david.bradford&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;I&apos;m going to commit the change on the jstestfuzz side and mark this ticket as dependent on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57003&quot; title=&quot;Generate all tasks for a build variant in a single task&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57003&quot;&gt;&lt;del&gt;SERVER-57003&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p/&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.914] Traceback (most recent call last):&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.914]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/src/buildscripts/evergreen_gen_multiversion_tests.py&quot;, line 451, in &amp;lt;module&amp;gt;&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.914]     main()  # pylint: disable=no-value-for-parameter&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.914]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/venv/lib/python3.9/site-packages/click/core.py&quot;, line 829, in __call__&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.914]     return self.main(*args, **kwargs)&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.914]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/venv/lib/python3.9/site-packages/click/core.py&quot;, line 782, in main&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]     rv = self.invoke(ctx)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/venv/lib/python3.9/site-packages/click/core.py&quot;, line 1259, in invoke&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]     return _process_result(sub_ctx.command.invoke(sub_ctx))&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/venv/lib/python3.9/site-packages/click/core.py&quot;, line 1066, in invoke&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]     return ctx.invoke(self.callback, **ctx.params)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/venv/lib/python3.9/site-packages/click/core.py&quot;, line 610, in invoke&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]     return callback(*args, **kwargs)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/src/buildscripts/evergreen_gen_multiversion_tests.py&quot;, line 380, in run_generate_tasks&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]     generate_orchestrator.generate(evg_expansions)&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/src/buildscripts/evergreen_gen_multiversion_tests.py&quot;, line 328, in generate&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]     generated_config = self.generate_fuzzer(evg_expansions)&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]   File &quot;/data/mci/cd1aa5b838fde20f5e60de5a183337c5/src/buildscripts/evergreen_gen_multiversion_tests.py&quot;, line 298, in generate_fuzzer&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915]     existing_tasks.add({ExistingTask(f&quot;{suite}_multiversion_gen&quot;)})&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2021/06/28 16:56:53.915] TypeError: unhashable type: &apos;set&apos;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
                            <comment id="3881022" author="robert.guo" created="Wed, 16 Jun 2021 13:33:34 +0000"  >&lt;p&gt;Yeah good point Max. Thanks for the suggestion.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;For the impl: we can use the overrides introduced in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55856&quot; title=&quot;Add implicit multiversion suite config file&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55856&quot;&gt;&lt;del&gt;SERVER-55856&lt;/del&gt;&lt;/a&gt; to continue to reuse the existing suite definition with a new &lt;tt&gt;TestData&lt;/tt&gt;&#160;field in the multiversion suite definition that the fuzzer-generated file can check to disable the &lt;tt&gt;setFeatureCompatibilityVersion&lt;/tt&gt;&#160;command&lt;/p&gt;</comment>
                            <comment id="3777262" author="max.hirschhorn@10gen.com" created="Mon, 17 May 2021 15:58:56 +0000"  >&lt;p&gt;I could be missing something but I wouldn&apos;t expect the mutational (jstestfuzz) fuzzer to be able to change the feature compatibility version in the jstestfuzz&amp;#95;*&amp;#95;multiversion tasks without causing secondaries to crash.&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;If the primary is the newer binary version, then its latestFCV would cause an older binary version secondary to crash.&lt;/li&gt;
	&lt;li&gt;If the primary is the older binary version, then its lastStableFCV would cause a newer binary version secondary to crash.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Perhaps this ticket is really about preventing the mutational (jstestfuzz) fuzzer from running the setFeatureCompatibilityVersion command based around a TestData option only set in the jstestfuzz&amp;#95;*&amp;#95;multiversion tasks? If the fuzzer isn&apos;t capable of running the setFeatureCompatibilityVersion command, then there won&apos;t be any need to restore the feature compatibility version to a specific value during collection validation.&lt;/p&gt;</comment>
                            <comment id="3582964" author="brooke.miller" created="Tue, 26 Jan 2021 16:40:16 +0000"  >&lt;p&gt;In triaging, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=robert.guo&quot; class=&quot;user-hover&quot; rel=&quot;robert.guo&quot;&gt;robert.guo&lt;/a&gt;&#160; mentioned that we&apos;ll need to figure out how to override the FCV value for multiversion suites. There are a few places to set various flags, but it&apos;s difficult to determine where to grab the final value from. (More details to come in the design for the Multiversion project.)&lt;/p&gt;</comment>
                    </comments>
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