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    <title>MongoDB Jira</title>
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    <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-43256] Fix incorrect uses of assert.soon and make hang-analysis call exit</title>
                <link>https://jira.mongodb.org/browse/SERVER-43256</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;A number of places use assert.soon as a retry mechanism (e.g. ssl_test.js), and at least one test (index_delete.js) runs assert.soon in a try/finally block to capture better error messages.&lt;/p&gt;

&lt;p&gt;&#8593; looks like this:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&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;  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;    try {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;        assert.soon(function() {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;            return checkProgram(serverPID).alive &amp;amp;&amp;amp;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;                (0 === _runMongoProgram.apply(null, clientArgv));&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;        }, &quot;connect failed&quot;, connectTimeoutMillis);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;    } catch (ex) {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;        return false;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;    } finally {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;        _stopMongoProgram(this.port);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;   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;    }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;

&lt;p&gt;In the cases where assert.soon fails due to timeout, we want to instead run hang-analysis and exit rather than returning control to the caller.&lt;/p&gt;

&lt;p&gt;(Comment from Robert: I think assert.soon almost always fails due to a timeout. What&apos;s the reason for exiting in this case?)&lt;/p&gt;

&lt;p&gt;Uses of assert.soon are pervasive in &lt;tt&gt;jstests&lt;/tt&gt; so do a best-effort fix here. Could modify assert.soon in a patch-build to throw immediately and any test that &lt;b&gt;doesn&apos;t&lt;/b&gt; fail is likely using it incorrectly.&lt;/p&gt;

&lt;p&gt;If there are more than (say) 3-4 cases of using assert.soon as a retry mechanism, create a helper &lt;tt&gt;assert.retry&lt;/tt&gt; method (name/location tbd) that has a similar signature to assert.soon but doesn&apos;t call hang-analyzer or barf if the callback is never truthy and instead returns a &lt;tt&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;success, error&amp;#93;&lt;/span&gt;&lt;/tt&gt; array where &lt;tt&gt;success&lt;/tt&gt; is the last result of the callback and error is any errors thrown by the callback. (Exact signature tbd depending on how it&apos;s used by callers of extant assert.soon.)&lt;/p&gt;

&lt;p&gt;Finally, once this is done, modify existing callers of the hang-analyzer (probably just assert.soon) to call exit after running hang-analysis.&lt;/p&gt;</description>
                <environment></environment>
        <key id="922746">SERVER-43256</key>
            <summary>Fix incorrect uses of assert.soon and make hang-analysis call exit</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="ryan.timmons@mongodb.com">Ryan Timmons</reporter>
                        <labels>
                    </labels>
                <created>Tue, 10 Sep 2019 19:53:27 +0000</created>
                <updated>Sun, 29 Oct 2023 22:17:20 +0000</updated>
                            <resolved>Thu, 31 Oct 2019 20:41:34 +0000</resolved>
                                    <version>Backlog</version>
                                    <fixVersion>4.3.1</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2513300" author="xgen-internal-githook" created="Thu, 31 Oct 2019 20:40:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Robert Guo&apos;, &apos;email&apos;: &apos;robert.guo@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43256&quot; title=&quot;Fix incorrect uses of assert.soon and make hang-analysis call exit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43256&quot;&gt;&lt;del&gt;SERVER-43256&lt;/del&gt;&lt;/a&gt; When assert.soon() is expected to fail, don&apos;t call the hang analyzer&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c046a5896652acea84c9db1d9346a43b2745a37b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c046a5896652acea84c9db1d9346a43b2745a37b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2501255" author="ryan.timmons" created="Fri, 25 Oct 2019 16:46:25 +0000"  >&lt;p&gt;Be suspicious any time there&apos;s an &lt;tt&gt;assert&lt;/tt&gt; inside of an &lt;tt&gt;assert.throws&lt;/tt&gt; e.g. &lt;a href=&quot;https://github.com/mongodb/mongo/blob/71fd21e91f9f7da71ddfd25fc3c021760e04953b/jstests/multiVersion/config_chunks_tags_set_fcv.js#L108-L110&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2499808" author="ryan.timmons" created="Thu, 24 Oct 2019 19:42:27 +0000"  >&lt;p&gt;A patch-test of calling hang-analyzer from assert.js is &lt;a href=&quot;https://evergreen.mongodb.com/version/5dae13882fbabe52a4964952&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;. Most of the reds are a result of the code in my last comment.&lt;/p&gt;</comment>
                            <comment id="2499804" author="ryan.timmons" created="Thu, 24 Oct 2019 19:41:28 +0000"  >&lt;p&gt;One particularly obvious case of using assert.soon incorrectly is here:&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/blob/c119ef45e3f1c2cc7f36c7b81d0731e332461c2b/jstests/replsets/log_secondary_oplog_application.js#L41-L44&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/c119ef45e3f1c2cc7f36c7b81d0731e332461c2b/jstests/replsets/log_secondary_oplog_application.js#L41-L44&lt;/a&gt;&lt;br/&gt;
The &lt;tt&gt;checkLog.contains&lt;/tt&gt; function relies on assert.soon to see if a message is in the log. This test is trying to assert that a message is &lt;b&gt;not&lt;/b&gt; in the logs, so it asserts that the assert.soon throws an exception. So if the hang-analyzer takes a while there could be an election and the rest of the test fails... Solution for this particular case is to just sleep for the timeout that assert.soon would normally wait throughout its retries and then call &lt;tt&gt;checkContainsOnce&lt;/tt&gt; and assert it&apos;s false&lt;/p&gt;</comment>
                            <comment id="2415759" author="max.hirschhorn@10gen.com" created="Wed, 11 Sep 2019 01:27:32 +0000"  >&lt;blockquote&gt;
&lt;p&gt;Finally, once this is done, modify existing callers of the hang-analyzer (probably just assert.soon) to call exit after running hang-analysis.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;I would think we&apos;d still want the mongo shell to log the JavaScript stacktrace along with the &quot;failed to load&quot; message picked up by the Build Baron tooling of where the exception from &lt;tt&gt;assert.soon()&lt;/tt&gt; came from.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="328471">SERVER-26867</issuekey>
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