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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-20324] Assertion failure isABSONObj() src/mongo/bson/bsonelement.cpp 409</title>
                <link>https://jira.mongodb.org/browse/SERVER-20324</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Since upgrade to 3.0 we see strange problems with mongod server. It happens once every few days. The strange thing is that when it happens we cannot connect from one host to mongod but another host has no problems. Yesterday during this situation we saw mongod crash during query from local console. Query which normally takes milliseconds was interrupted with ctrl-c and error from attachment has occured. We don&apos;t see any errors in mongod log. Our setup is replica set with 3 nodes (primary, secondary, arbiter). Can you tell me what you need to analize this problem? &lt;/p&gt;</description>
                <environment>Debian 7.9</environment>
        <key id="228905">SERVER-20324</key>
            <summary>Assertion failure isABSONObj() src/mongo/bson/bsonelement.cpp 409</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="ramon.fernandez@mongodb.com">Ramon Fernandez Marina</assignee>
                                    <reporter username="matya">Marcin Matyaszczyk</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Sep 2015 07:52:25 +0000</created>
                <updated>Sat, 10 Oct 2015 13:39:23 +0000</updated>
                            <resolved>Sat, 10 Oct 2015 13:39:23 +0000</resolved>
                                    <version>3.0.4</version>
                                                    <component>Stability</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1057290" author="ramon.fernandez" created="Sat, 10 Oct 2015 13:39:16 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=matya&quot; class=&quot;user-hover&quot; rel=&quot;matya&quot;&gt;matya&lt;/a&gt;, the server logs you uploaded show that the server does not crash, but is just reporting there was a socket exception while servicing this request:&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;
		&lt;tbody &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-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;2015-09-08T11:05:46.791+0000 I QUERY    [conn2207804] query base5.webhook_send query: { uid: &quot;07363ead312dc7f1a9185e9ca484236b&quot;, event_type: &quot;ok&quot; } planSummary: IXSCAN { uid: 1.0, event_type: 1.0 } ntoreturn:0 ntoskip:0 nscanned:1 nscannedObjects:1 keyUpdates:0 writeConflicts:0 numYields:1 nreturned:1 reslen:405 locks:{ Global: { acquireCount: { r: 4 } }, Database: { acquireCount: { r: 2 } }, Collection: { acquireCount: { r: 2 } } } 29915ms&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;2015-09-08T11:05:46.791+0000 I NETWORK  [conn2207804] SocketException handling request, closing client connection: 9001 socket exception [SEND_ERROR] server [127.0.0.1:48655]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;
&lt;p&gt;The most likely cause for this behavior is a transient network error.&lt;/p&gt;

&lt;p&gt;Please note that the SERVER project is for reporting bugs or feature suggestions for the MongoDB server. For MongoDB-related support discussion please post on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or &lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;, where your question will reach a larger audience. A question like this involving more discussion would be best posted on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt;. See also our &lt;a href=&quot;https://www.mongodb.org/about/support/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Technical Support page&lt;/a&gt; for additional support resources.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                            <comment id="1025072" author="matya" created="Wed, 9 Sep 2015 13:26:13 +0000"  >&lt;p&gt;logs uploaded&lt;/p&gt;</comment>
                            <comment id="1025051" author="ramon.fernandez" created="Wed, 9 Sep 2015 13:05:09 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=matya&quot; class=&quot;user-hover&quot; rel=&quot;matya&quot;&gt;matya&lt;/a&gt;, the stack trace looks like coming from the shell, not from the server. Can you please upload logs for the &lt;tt&gt;mongod&lt;/tt&gt; process that you say crashed at the time of the crash?&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="89154" name="mongocrash.txt" size="4557" author="matya" created="Wed, 9 Sep 2015 07:52:25 +0000"/>
                            <attachment id="89203" name="mongod.log.2015-09-09T01-43-01.gz" size="19121732" author="matya" created="Wed, 9 Sep 2015 13:26:13 +0000"/>
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