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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-27131] While inserting records into MongoDB, the used memory of the instance running MongoDB keeps growing until it is shutdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-27131</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I am running mongoDB server on an instance of &lt;b&gt;1 GB RAM&lt;/b&gt;. I have my client application on the other side inserting records for a somewhat long period of time (~ 1 day to 2 days). &lt;/p&gt;

&lt;p&gt;What is happening is that &lt;b&gt;the free memory of the instance keeps decreasing&lt;/b&gt; (or the used memory keeps increasing) until it reaches the maximum and seems the operating system kills the mongoDB. &lt;/p&gt;

&lt;p&gt;I had two types of exceptions: &lt;/p&gt;

&lt;p&gt;&lt;font color=&quot;red&quot;&gt;*The first one: *&lt;/font&gt;&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;org.springframework.dao.DataIntegrityViolationException: { &quot;serverUsed&quot; : &quot;52.212.43.249:27017&quot; , &quot;ok&quot; : 1 , &quot;n&quot; : 0 , &quot;err&quot; : &quot;WiredTigerRecordStore::insertRecord 12: Cannot allocate memory&quot; , &quot;code&quot; : 8}; nested exception is com.mongodb.WriteConcernException: { &quot;serverUsed&quot; : &quot;52.212.43.249:27017&quot; , &quot;ok&quot; : 1 , &quot;n&quot; : 0 , &quot;err&quot; : &quot;WiredTigerRecordStore::insertRecord 12: Cannot allocate memory&quot; , &quot;code&quot; : 8}&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;   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;	at org.springframework.data.mongodb.core.MongoExceptionTranslator.translateExceptionIfPossible(MongoExceptionTranslator.java:85)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.potentiallyConvertRuntimeException(MongoTemplate.java:2114)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.execute(MongoTemplate.java:464)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.insertDBObject(MongoTemplate.java:1027)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.doInsert(MongoTemplate.java:838)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.insert(MongoTemplate.java:777)&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;   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;	at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.save(SimpleMongoRepository.java:78)&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;   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;	at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)&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;   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;	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&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;   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;	at java.lang.reflect.Method.invoke(Method.java:497)&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;   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;	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:503)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:488)&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;	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:460)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;&lt;font color=&quot;red&quot;&gt;or the second one (resulting from shutting down the mongoDB after the memory is exhausted)&lt;/font&gt;&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;org.springframework.dao.DataAccessResourceFailureException: Timed out after 10000 ms while waiting for a server that matches AnyServerSelector{}. Client view of cluster state is {type=Unknown, servers=[{address=52.212.43.249:27017, type=Unknown, state=Connecting, exception={com.mongodb.MongoException$Network: Exception opening the socket}, caused by {java.net.ConnectException: Connection refused: connect}}]; nested exception is com.mongodb.MongoTimeoutException: Timed out after 10000 ms while waiting for a server that matches AnyServerSelector{}. Client view of cluster state is {type=Unknown, servers=[{address=52.212.43.249:27017, type=Unknown, state=Connecting, exception={com.mongodb.MongoException$Network: Exception opening the socket}, caused by {java.net.ConnectException: Connection refused: connect}}]&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;   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;	at org.springframework.data.mongodb.core.MongoExceptionTranslator.translateExceptionIfPossible(MongoExceptionTranslator.java:77)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.potentiallyConvertRuntimeException(MongoTemplate.java:2114)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.execute(MongoTemplate.java:464)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.insertDBObject(MongoTemplate.java:1027)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.doInsert(MongoTemplate.java:838)&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;   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;	at org.springframework.data.mongodb.core.MongoTemplate.insert(MongoTemplate.java:777)&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;	at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.save(SimpleMongoRepository.java:78)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="333111">SERVER-27131</key>
            <summary>While inserting records into MongoDB, the used memory of the instance running MongoDB keeps growing until it is shutdown</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="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="haytham.salhi">Haytham Salhi</reporter>
                        <labels>
                    </labels>
                <created>Sun, 20 Nov 2016 00:36:37 +0000</created>
                <updated>Fri, 2 Dec 2016 00:01:24 +0000</updated>
                            <resolved>Mon, 21 Nov 2016 01:48:57 +0000</resolved>
                                    <version>3.2.10</version>
                    <version>3.2.11</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1447402" author="thomas.schubert" created="Fri, 2 Dec 2016 00:01:24 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haytham.salhi&quot; class=&quot;user-hover&quot; rel=&quot;haytham.salhi&quot;&gt;haytham.salhi&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;We&apos;ve included this change in behavior in our latest iteration of our documentation here: &lt;a href=&quot;https://docs.mongodb.com/manual/reference/program/mongod/#cmdoption--wiredTigerCacheSizeGB&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/reference/program/mongod/#cmdoption--wiredTigerCacheSizeGB&lt;/a&gt;. If you would like workarounds to be listed for the documentation for older versions of MongoDB, please feel free to open a DOCS ticket by clicking &quot;report a problem&quot; on the same page.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1438961" author="haytham.salhi" created="Mon, 21 Nov 2016 14:04:12 +0000"  >&lt;p&gt;Thank you Thomas for the clarification. If such issue was previously reported, I think reflecting the solution (workarounds) on the manuals and documentation would be better as they are the first place where the developers go to when such issues appear, especially if solutions like the ones you mentioned are not indexed by search engines. &lt;/p&gt;

&lt;p&gt;Anoter point to mention, I tried to specify a float value for wiredTigerCacheSizeGB (e.g. 0.5), but when attempting to start mongoDB, it does not run and the status remains &apos;stop&apos;.&lt;/p&gt;

&lt;p&gt;Best,&lt;br/&gt;
Haytham&lt;/p&gt;</comment>
                            <comment id="1438591" author="thomas.schubert" created="Mon, 21 Nov 2016 01:48:57 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haytham.salhi&quot; class=&quot;user-hover&quot; rel=&quot;haytham.salhi&quot;&gt;haytham.salhi&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for providing the requested information. The output indicates that you are running 3.2.11 rather than 3.3.11 and I&apos;ve updated the ticket to reflect that. In MongoDB 3.2.11, the default &lt;a href=&quot;https://docs.mongodb.com/v3.2/faq/storage/#to-what-size-should-i-set-the-wiredtiger-internal-cache&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;WiredTiger cache size&lt;/a&gt; is 1gb or 60% of available memory, whichever is larger. Additionally, it is expected that a system would run out of memory if the entirety of available memory was allocated to the WiredTiger cache.&lt;/p&gt;

&lt;p&gt;In MongoDB 3.4, we have changed the default cache size to have a lower bound of 256mb to improve behavior when running WiredTiger on machines with little memory (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-23391&quot; title=&quot;Improve behavior when running under WiredTiger on machines with little memory&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-23391&quot;&gt;&lt;del&gt;SERVER-23391&lt;/del&gt;&lt;/a&gt;). In addition, we now allow wiredTigerCacheSizeGB to be specified as a float (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-23624&quot; title=&quot;Allow wiredTigerCacheSizeGB to be specified as a float&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-23624&quot;&gt;&lt;del&gt;SERVER-23624&lt;/del&gt;&lt;/a&gt;) to make configuration in these cases simpler.&lt;/p&gt;

&lt;p&gt;Please review &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-22274&quot; title=&quot;WiredTiger cache size is only configurable in whole gigabytes.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-22274&quot;&gt;&lt;del&gt;SERVER-22274&lt;/del&gt;&lt;/a&gt; for workarounds to set the WiredTiger cache size to a float in MongoDB 3.0 and 3.2.&lt;/p&gt;

&lt;p&gt;I&apos;m closing this ticket since the required work has been completed in the linked tickets. 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-users 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;. A question like this involving more discussion would be best posted on the mongodb-users group.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1438565" author="haytham.salhi" created="Mon, 21 Nov 2016 00:13:27 +0000"  >&lt;p&gt;You might need to give attention to the files labeled with 19/11.  &lt;/p&gt;</comment>
                            <comment id="1438563" author="haytham.salhi" created="Sun, 20 Nov 2016 23:52:15 +0000"  >&lt;p&gt;@Thomas: Attached is what you required.&lt;br/&gt;
@Dan: As mentioned in &quot;Affects Version/s&quot;, the issue appeared while using the version 3.3.10, then I upgraded it to 3.3.11; the same issue though. Here is the output of mongod --version:&lt;/p&gt;


&lt;p&gt;db version v3.2.11&lt;br/&gt;
git version: 009580ad490190ba33d1c6253ebd8d91808923e4&lt;br/&gt;
OpenSSL version: OpenSSL 1.0.1f 6 Jan 2014&lt;br/&gt;
allocator: tcmalloc&lt;br/&gt;
modules: none&lt;br/&gt;
build environment:&lt;br/&gt;
    distmod: ubuntu1404&lt;br/&gt;
    distarch: x86_64&lt;br/&gt;
    target_arch: x86_64&lt;/p&gt;
</comment>
                            <comment id="1438388" author="dan@10gen.com" created="Sun, 20 Nov 2016 04:12:03 +0000"  >&lt;p&gt;Can you also please confirm the version of mongod you are using?  Please post the output of &lt;tt&gt;mongod --version&lt;/tt&gt;.&lt;/p&gt;</comment>
                            <comment id="1438383" author="thomas.schubert" created="Sun, 20 Nov 2016 02:19:12 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=haytham.salhi&quot; class=&quot;user-hover&quot; rel=&quot;haytham.salhi&quot;&gt;haytham.salhi&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for reporting this issue. So we can continue to investigate, would you please upload an archive of the &lt;tt&gt;diagnostic.data&lt;/tt&gt; directory for an affected mongod?&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1438371" author="haytham.salhi" created="Sun, 20 Nov 2016 00:45:40 +0000"  >&lt;p&gt;The instance is running Linux OS 14.04 LTS.&lt;/p&gt;</comment>
                    </comments>
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