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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-9285] Very high usage of memory on upgrading from 2.2 to 2.4.1</title>
                <link>https://jira.mongodb.org/browse/SERVER-9285</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After upgrading from 2.2 to 2.4.1 i am seeing a very usage of the memory. The memory (8GB) usage stays at 40-50% most of the time and gradually goes upto 98% !!&lt;/p&gt;

&lt;p&gt;Please help urgently as it is impacting my production&lt;/p&gt;</description>
                <environment>Windows Server 2008 R2</environment>
        <key id="71147">SERVER-9285</key>
            <summary>Very high usage of memory on upgrading from 2.2 to 2.4.1</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="-1">Unassigned</assignee>
                                    <reporter username="ronak.rks">Ronak Kumar Samantray</reporter>
                        <labels>
                    </labels>
                <created>Mon, 8 Apr 2013 21:08:57 +0000</created>
                <updated>Wed, 10 Dec 2014 23:18:39 +0000</updated>
                            <resolved>Fri, 4 Apr 2014 18:47:19 +0000</resolved>
                                    <version>2.4.1</version>
                                                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="311828" author="tad" created="Fri, 12 Apr 2013 09:32:07 +0000"  >&lt;p&gt;The release candidate version 2.4.2-rc0 includes fixes for some memory leaks in JavaScript, which are particularly evident when running MapReduce but also affect other JavaScript usage.  Can you try version 2.4.2-rc0 and see if the memory usage is better?&lt;/p&gt;</comment>
                            <comment id="311804" author="ronak.rks" created="Fri, 12 Apr 2013 08:39:52 +0000"  >&lt;p&gt;I just reverted back to 2.2.* and its working fine to start with. I will wait for a full day and let you guys know. But as of now it looks like a problem with the 2.4.1 version. &lt;/p&gt;

&lt;p&gt;Someone kindly help us resolve this.&lt;/p&gt;

&lt;p&gt;Ronak&lt;/p&gt;</comment>
                            <comment id="310308" author="steinn" created="Wed, 10 Apr 2013 15:14:05 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;I am running a mongod server and am experiencing the same problem running on Ubuntu 12.04. &lt;/p&gt;

&lt;p&gt;I have a replica set with two nodes and an arbiter. This issue has occurred at least three times since upgrading from 2.2.3 to 2.4.1.&lt;br/&gt;
This has only occurred on the primary node. The secondary node is only used for fail overs. There are no MapReduce jobs, so it&apos;s probably not&lt;br/&gt;
the 9230 issue.&lt;/p&gt;

&lt;p&gt;Currently when the primary node gets to high memory usage I step down the primary and restart the mongod process.&lt;/p&gt;

&lt;p&gt;Any idea what the problem might be?&lt;/p&gt;




</comment>
                            <comment id="309317" author="ronak.rks" created="Tue, 9 Apr 2013 13:13:13 +0000"  >&lt;p&gt;I do have Map-Reduce functions, but its only used very few times. The primary queries are Read and Geo spatial queries.&lt;/p&gt;</comment>
                            <comment id="309293" author="tad" created="Tue, 9 Apr 2013 12:38:01 +0000"  >&lt;p&gt;Do you run MapReduce jobs?&lt;/p&gt;

&lt;p&gt;This may be &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9230&quot; title=&quot;v8 ObjectTracker isn&amp;#39;t tracking uncollected objects&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9230&quot;&gt;&lt;del&gt;SERVER-9230&lt;/del&gt;&lt;/a&gt; (which will be fixed in 2.4.2), in which a memory leak causes heap space to grow over time.  Can you run VMMap (&lt;a href=&quot;http://technet.microsoft.com/en-us/sysinternals/dd535533.aspx&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://technet.microsoft.com/en-us/sysinternals/dd535533.aspx&lt;/a&gt;) on the mongod.exe process and see if the heap memory is increasing over time?&lt;/p&gt;</comment>
                            <comment id="309232" author="ronak.rks" created="Tue, 9 Apr 2013 10:14:15 +0000"  >&lt;p&gt;I am observing it on mongod.exe&lt;/p&gt;</comment>
                            <comment id="308882" author="renctan" created="Mon, 8 Apr 2013 21:40:41 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;Are you seeing this on mongos or mongod?&lt;/p&gt;</comment>
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