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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-53456] Hang analyzer creates multiple invocations</title>
                <link>https://jira.mongodb.org/browse/SERVER-53456</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Running the hang analyzer with no processes specified causes it to discover resmoke and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a2a154c9a9aa133603d0f2797d77479a7f192ac8/buildscripts/resmokelib/hang_analyzer/hang_analyzer.py#L76&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;send&lt;/a&gt; it a SIGUSR1 to dump info. When Resmoke receives a SIGUSR1 it &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a2a154c9a9aa133603d0f2797d77479a7f192ac8/buildscripts/resmokelib/sighandler.py#L155&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;invokes&lt;/a&gt; the hang analyzer targeting its subprocesses. Now there are two hang analyzers that will target the same mongo and mongods, creating attachment failures, overwriting output files, and sometimes hanging as well.&lt;/p&gt;

&lt;p&gt;This doesn&apos;t happen in CI because we &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a2a154c9a9aa133603d0f2797d77479a7f192ac8/etc/evergreen.yml#L3272&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;only target&lt;/a&gt; python processes, but it&apos;s intended that a local invocation without specifying processes should work.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1572487">SERVER-53456</key>
            <summary>Hang analyzer creates multiple invocations</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="siran.wang@mongodb.com">Siran Wang</assignee>
                                    <reporter username="carl.worley@mongodb.com">Raiden Worley</reporter>
                        <labels>
                            <label>neweng</label>
                            <label>tig-hanganalyzer</label>
                    </labels>
                <created>Fri, 18 Dec 2020 21:58:49 +0000</created>
                <updated>Sun, 29 Oct 2023 21:59:22 +0000</updated>
                            <resolved>Fri, 26 Feb 2021 19:34:02 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3637275" author="xgen-internal-githook" created="Fri, 26 Feb 2021 16:37:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Siran Wang&apos;, &apos;email&apos;: &apos;siran.wang@mongodb.com&apos;, &apos;username&apos;: &apos;vincivans&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53456&quot; title=&quot;Hang analyzer creates multiple invocations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53456&quot;&gt;&lt;del&gt;SERVER-53456&lt;/del&gt;&lt;/a&gt; let hang_analyzer target only c++ process&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f589354f0fe82b2fd489ea13e76acd163120aeb6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f589354f0fe82b2fd489ea13e76acd163120aeb6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3538327" author="robert.guo" created="Mon, 21 Dec 2020 15:37:16 +0000"  >&lt;p&gt;A couple of options.&lt;/p&gt;

&lt;p&gt;1. have the hang analyzer just target c++ processes by default&lt;br/&gt;
2. Have a global hang analyzer lock file to allow only a single instance to run.&lt;/p&gt;

&lt;p&gt;We can try option 1 first since the majority of users on Server will care about C++ processes only.&lt;/p&gt;</comment>
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