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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-30687] Group query halts server.</title>
                <link>https://jira.mongodb.org/browse/SERVER-30687</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p/&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;OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016&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;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
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&lt;p/&gt;

&lt;p&gt;Relevant logs are in log.txt&lt;/p&gt;

&lt;p&gt;At the time of incident I was running mongoexport on big collection (~10gb 15mln docs)&lt;br/&gt;
I suppose that mongoexport have slowed database to the level, when &quot;group reduce init 2&quot; exceeded its 2 second timeout.&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;
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&lt;p/&gt;

&lt;p&gt;Maybe it would be better to fail single query instead of halting entire instance.&lt;/p&gt;</description>
                <environment></environment>
        <key id="417019">SERVER-30687</key>
            <summary>Group query halts server.</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="3">Duplicate</resolution>
                                        <assignee username="mark.agarunov">Mark Agarunov</assignee>
                                    <reporter username="sarg">Sergey Trofimov</reporter>
                        <labels>
                            <label>RF</label>
                    </labels>
                <created>Wed, 16 Aug 2017 08:10:36 +0000</created>
                <updated>Wed, 20 Sep 2017 05:04:19 +0000</updated>
                            <resolved>Mon, 21 Aug 2017 16:12:42 +0000</resolved>
                                    <version>3.2.16</version>
                                                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1652149" author="sarg" created="Sat, 19 Aug 2017 14:47:02 +0000"  >&lt;p&gt;Hi. I&apos;m glad to hear that the problem is already fixed. &lt;br/&gt;
Thank you for your recommendation, we will follow it asap. &lt;br/&gt;
Please feel free to close the issue.&lt;/p&gt;</comment>
                            <comment id="1651519" author="mark.agarunov" created="Fri, 18 Aug 2017 15:56:00 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=sarg&quot; class=&quot;user-hover&quot; rel=&quot;sarg&quot;&gt;sarg&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the report. Looking over the log you&apos;ve provided, I suspect this behavior is due to the same cause as &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-26389&quot; title=&quot;Make javascript periodic interrupts disabled by default&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-26389&quot;&gt;&lt;del&gt;SERVER-26389&lt;/del&gt;&lt;/a&gt;, which has been fixed in MongoDB version 3.4. My recommendation would be to upgrade to the latest version of MongoDB if possible. &lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="163393" name="log.txt" size="10834" author="sarg" created="Wed, 16 Aug 2017 08:04:42 +0000"/>
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