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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-22334] mongod crashes on map_reduce call at AdjustAmountOfExternalAllocatedMemory</title>
                <link>https://jira.mongodb.org/browse/SERVER-22334</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have replica set with 3 mongod nodes. After we call crash-mongo.py (attached) script two of nodes (SECONDARY) fall with the backtrace (see mongod-crash.txt attached).&lt;/p&gt;</description>
                <environment></environment>
        <key id="261425">SERVER-22334</key>
            <summary>mongod crashes on map_reduce call at AdjustAmountOfExternalAllocatedMemory</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="pva">Peter</reporter>
                        <labels>
                    </labels>
                <created>Thu, 28 Jan 2016 13:44:39 +0000</created>
                <updated>Fri, 29 Jan 2016 13:26:15 +0000</updated>
                            <resolved>Fri, 29 Jan 2016 13:26:15 +0000</resolved>
                                    <version>3.0.8</version>
                                                    <component>Admin</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1157752" author="ramon.fernandez" created="Fri, 29 Jan 2016 13:26:03 +0000"  >&lt;p&gt;Thanks for the feedback &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=pva&quot; class=&quot;user-hover&quot; rel=&quot;pva&quot;&gt;pva&lt;/a&gt;, and glad to hear that 3.2.1 solves this issue for you.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                            <comment id="1157502" author="pva" created="Fri, 29 Jan 2016 02:53:18 +0000"  >&lt;p&gt;I&apos;m not sure how to update status of this issue, but I hope you&apos;ll see my comment.&lt;/p&gt;</comment>
                            <comment id="1157499" author="pva" created="Fri, 29 Jan 2016 02:51:20 +0000"  >&lt;p&gt;Thank you guys for fast feedback.&lt;/p&gt;

&lt;p&gt;1. We use Gentoo distribution everywhere, so binaries are self built, of course.&lt;br/&gt;
2. Upgrade to 3.2.1 helped. Actually after upgrade this script started to issue error:&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;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-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;Traceback (most recent call last):&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;  File &quot;crash-mongo.py&quot;, line 26, in &amp;lt;module&amp;gt;&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;    result = db.sms.map_reduce(map, reduce,&quot;sms_report&quot;, query={&apos;charging_id&apos;: {&apos;$ne&apos;:10}, &apos;receipt.stat&apos;: &apos;DELIVRD&apos;})&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;  File &quot;/usr/lib64/python3.4/site-packages/pymongo/collection.py&quot;, line 1621, in map_reduce&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;    sock_info, cmd, slave_ok, ReadPreference.PRIMARY)&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;  File &quot;/usr/lib64/python3.4/site-packages/pymongo/collection.py&quot;, line 191, in _command&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;    allowable_errors)&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;  File &quot;/usr/lib64/python3.4/site-packages/pymongo/pool.py&quot;, line 184, in command&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;    codec_options, check, allowable_errors)&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;  File &quot;/usr/lib64/python3.4/site-packages/pymongo/network.py&quot;, line 54, in command&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;    helpers._check_command_response(response_doc, msg, allowable_errors)&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;  File &quot;/usr/lib64/python3.4/site-packages/pymongo/helpers.py&quot;, line 188, in _check_command_response&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;    raise OperationFailure(msg % errmsg, code, response)&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;pymongo.errors.OperationFailure: command SON([(&apos;mapreduce&apos;, &apos;sms&apos;), (&apos;map&apos;, Code(&apos;\n    function(){\n        emit(this.addr, this)\n    }\n&apos;, {})), (&apos;reduce&apos;, Code(&quot;\n    function(key, values){\n         var result = {&apos;addr&apos;: key, &apos;sent&apos;:[]}\n         for (var i = 0; i &amp;lt; values.length; i++) {\n            result.sent.append(value)\n         }\n         return result\n    }\n&quot;, {})), (&apos;out&apos;, &apos;sms_report&apos;), (&apos;query&apos;, {&apos;receipt.stat&apos;: &apos;DELIVRD&apos;, &apos;charging_id&apos;: {&apos;$ne&apos;: 10}})]) on namespace atv-purchase.$cmd failed: ReferenceError: value is not defined :&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;   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;_funcs2@:5:13&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;My guess is that crash was due to this error, and this error was as result was not defined with var. It should be &apos;var result = ...&apos; instead of &apos;result = ...&apos;&lt;/p&gt;

&lt;p&gt;So this error is resolved in 3.2.&#1093;. Thank you again!&lt;/p&gt;</comment>
                            <comment id="1156548" author="ramon.fernandez" created="Thu, 28 Jan 2016 13:58:20 +0000"  >&lt;p&gt;Note also that &lt;a href=&quot;https://docs.mongodb.org/manual/release-notes/3.2/#spidermonkey-javascript-engine&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;MongoDB 3.2 uses SpiderMonkey as the JavaScript engine&lt;/a&gt;, so I&apos;d recommend you try the latest version (3.2.1 at the moment) and see if meets your needs.&lt;/p&gt;</comment>
                            <comment id="1156542" author="ramon.fernandez" created="Thu, 28 Jan 2016 13:55:03 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=pva&quot; class=&quot;user-hover&quot; rel=&quot;pva&quot;&gt;pva&lt;/a&gt;, the crash is happening inside the V8 engine. We&apos;ve seen this before in systems with grsecurity/SELinux, as well as with custom compiled binaries.&lt;/p&gt;

&lt;p&gt;Does your system have any grsecurity/SELinux policies enabled? Are you using stock binaries or were these binaries compiled in-house?&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="106790" name="crash-mongo.py" size="557" author="pva" created="Thu, 28 Jan 2016 13:44:39 +0000"/>
                            <attachment id="106791" name="mongod-crash.txt" size="6120" author="pva" created="Thu, 28 Jan 2016 13:44:39 +0000"/>
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