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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-29510] mongos on all servers crash when adding an index</title>
                <link>https://jira.mongodb.org/browse/SERVER-29510</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I&apos;m trying to add an index on a largish (~100 GB) and busy collection (many servers connecting, hundreds requests per second):&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;db.screenshots.createIndex(&lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: {&amp;quot;user_id&amp;quot;}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt;, &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: {&amp;quot;unique&amp;quot;}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt;, &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: {background}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt;);&lt;/p&gt;

&lt;p&gt;db.screenshots.createIndex(&lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: {&amp;quot;deleted&amp;quot;}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt;, &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: {&amp;quot;unique&amp;quot;}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt;, &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: {background}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt;);&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;It seems to work, but unfortunately after the index is built, all mongos instances on all servers crash (to be precise - around 90% of mongos processes crashed; the ones which didn&apos;t crash were on idle servers with few connections).&lt;/p&gt;

&lt;p&gt;We are using mongo 3.2.13 on Ubuntu 16.04, with sharding and replication, and mongos connecting.&lt;/p&gt;

&lt;p&gt;See the attached log with a crash.&lt;/p&gt;</description>
                <environment></environment>
        <key id="391557">SERVER-29510</key>
            <summary>mongos on all servers crash when adding an index</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="3">Duplicate</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="tch@virtall.com">Tomasz Chmielewski</reporter>
                        <labels>
                    </labels>
                <created>Thu, 8 Jun 2017 06:27:08 +0000</created>
                <updated>Tue, 6 Dec 2022 03:59:41 +0000</updated>
                            <resolved>Thu, 8 Jun 2017 06:38:08 +0000</resolved>
                                    <version>3.2.13</version>
                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1590671" author="kaloian.manassiev" created="Thu, 8 Jun 2017 06:37:45 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tch%40virtall.com&quot; class=&quot;user-hover&quot; rel=&quot;tch@virtall.com&quot;&gt;tch@virtall.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for reporting this issue. This is a known problem, which was introduced in version 3.2.13 and has already been fixed under &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-29152&quot; title=&quot;Segfault in multiple shard primaries under regular load&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-29152&quot;&gt;&lt;del&gt;SERVER-29152&lt;/del&gt;&lt;/a&gt;. The fix will be available in version 3.2.14.&lt;/p&gt;

&lt;p&gt;If this is causing you recurrent problems, please downgrade to 3.2.12 until 3.2.14 is released, which should be very soon.&lt;/p&gt;

&lt;p&gt;Once again, thank you for your report and apologies for the inconvenience.&lt;/p&gt;

&lt;p&gt;Best regards,&lt;br/&gt;
-Kal.&lt;/p&gt;</comment>
                            <comment id="1590667" author="tch@virtall.com" created="Thu, 8 Jun 2017 06:28:47 +0000"  >&lt;p&gt;It seems that Jira garbled createIndex - let me know if I should readd them (don&apos;t see a way to edit the description).&lt;/p&gt;</comment>
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