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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-27337] Map/Reduce output inline option is masserting</title>
                <link>https://jira.mongodb.org/browse/SERVER-27337</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The mr1.js jstest tests this but doesn&apos;t check the command result and thus the test still passes:&lt;/p&gt;
&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;  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;    res = db.runCommand({mapreduce: &quot;mr1&quot;, map: m2, reduce: r2, out: {inline: true}});&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;   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;    print(&quot;t4: &quot; + res.timeMillis);&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;The massert is when it tries to drop its temp collections:&lt;/p&gt;
&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;  margin-top: 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;[MongoDFixture:job0] 2016-12-08T09:28:13.441-0500 I -        [conn4] Assertion: 28539:need a valid database name src/mongo/db/concurrency/d_concurrency.cpp 106&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;This massert does not occur in 3.2 or 3.4.&lt;/p&gt;</description>
                <environment></environment>
        <key id="337282">SERVER-27337</key>
            <summary>Map/Reduce output inline option is masserting</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="9">Done</resolution>
                                        <assignee username="tess.avitabile@mongodb.com">Tess Avitabile</assignee>
                                    <reporter username="milkie@mongodb.com">Eric Milkie</reporter>
                        <labels>
                    </labels>
                <created>Thu, 8 Dec 2016 14:32:59 +0000</created>
                <updated>Wed, 5 Apr 2017 11:44:16 +0000</updated>
                            <resolved>Tue, 13 Dec 2016 15:13:31 +0000</resolved>
                                    <version>3.5.1</version>
                                    <fixVersion>3.5.1</fixVersion>
                                    <component>MapReduce</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1456274" author="xgen-internal-githook" created="Tue, 13 Dec 2016 15:12:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tessavitabile&apos;, u&apos;name&apos;: u&apos;Tess Avitabile&apos;, u&apos;email&apos;: u&apos;tess.avitabile@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27337&quot; title=&quot;Map/Reduce output inline option is masserting&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27337&quot;&gt;&lt;del&gt;SERVER-27337&lt;/del&gt;&lt;/a&gt; mapReduce should not attempt to drop nonexistent temp collection&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1dde8c56b6025363f8e048120f1ada69522d8615&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1dde8c56b6025363f8e048120f1ada69522d8615&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1452430" author="milkie" created="Thu, 8 Dec 2016 16:17:04 +0000"  >&lt;p&gt;This appears to have been broken with the commit in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20113&quot; title=&quot;File descriptors can be exhausted by killing map/reduce jobs on WiredTiger&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20113&quot;&gt;&lt;del&gt;SERVER-20113&lt;/del&gt;&lt;/a&gt;.  The old code worked even if the temp collection namespace was null (e.g. when the inline functionality is used).  The new code assumes the temp collection namespace will always be present and valid, but this is an incorrect assumption.&lt;/p&gt;</comment>
                    </comments>
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