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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-18458] High cpu usage on secondary with wiredTiger</title>
                <link>https://jira.mongodb.org/browse/SERVER-18458</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We have a replica set with 3 servers which install Mongodb 2.6.7.&lt;br/&gt;
After update one secondary to 3.0.2 with the wiredTiger engine, the CPU usage will increased to 100% slowly.&lt;br/&gt;
But if make the 3.0.2 as Primary, everything is OK.&lt;/p&gt;</description>
                <environment></environment>
        <key id="203906">SERVER-18458</key>
            <summary>High cpu usage on secondary with wiredTiger</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="fivoot">Damon</reporter>
                        <labels>
                    </labels>
                <created>Wed, 13 May 2015 16:02:28 +0000</created>
                <updated>Thu, 14 May 2015 22:49:12 +0000</updated>
                            <resolved>Wed, 13 May 2015 17:07:18 +0000</resolved>
                                    <version>3.0.2</version>
                    <version>3.0.3</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="914721" author="fivoot" created="Thu, 14 May 2015 22:49:12 +0000"  >&lt;p&gt;Hi, Ramon&lt;br/&gt;
The issue still exists, after update to 2.6.9.&lt;br/&gt;
And seems it&apos;s the issue of the Java drive: &lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-853&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;JAVA-853 &lt;/a&gt;.&lt;br/&gt;
We are using the Java driver 2.11.4, here is some log of the Mongodb and Java:&lt;/p&gt;

&lt;p&gt;Mongo:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;2015-05-14T21:56:09.239+0000 I QUERY    &lt;span class=&quot;error&quot;&gt;&amp;#91;conn13679&amp;#93;&lt;/span&gt; killcursors  keyUpdates:0 writeConflicts:0 numYields:0 locks:{ Global: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; }, Database: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; }, Collection: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; } } 21345ms&lt;br/&gt;
2015-05-14T21:56:09.240+0000 I NETWORK  &lt;span class=&quot;error&quot;&gt;&amp;#91;rsBackgroundSync&amp;#93;&lt;/span&gt; Socket flush send() errno:9 Bad file descriptor 10.0.1.85:27017&lt;br/&gt;
2015-05-14T21:56:09.240+0000 I -        &lt;span class=&quot;error&quot;&gt;&amp;#91;rsBackgroundSync&amp;#93;&lt;/span&gt; caught exception (socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;SEND_ERROR&amp;#93;&lt;/span&gt; for 10.0.1.85:27017) in destructor (~PiggyBackData)&lt;br/&gt;
2015-05-14T21:56:09.260+0000 I QUERY    &lt;span class=&quot;error&quot;&gt;&amp;#91;conn13721&amp;#93;&lt;/span&gt; killcursors  keyUpdates:0 writeConflicts:0 numYields:0 locks:{ Global: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; }, Database: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; }, Collection: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; } } 20980ms&lt;br/&gt;
2015-05-14T21:56:09.312+0000 I QUERY    &lt;span class=&quot;error&quot;&gt;&amp;#91;conn13529&amp;#93;&lt;/span&gt; killcursors  keyUpdates:0 writeConflicts:0 numYields:0 locks:{ Global: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; }, Database: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; }, Collection: { acquireCount: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { r}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; } } 10244ms&lt;br/&gt;
2015-05-14T21:56:09.313+0000 I NETWORK  &lt;span class=&quot;error&quot;&gt;&amp;#91;conn13068&amp;#93;&lt;/span&gt; SocketException handling request, closing client connection: 9001 socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;SEND_ERROR&amp;#93;&lt;/span&gt; server &lt;span class=&quot;error&quot;&gt;&amp;#91;10.0.1.102:46615&amp;#93;&lt;/span&gt; &lt;br/&gt;
2015-05-14T21:56:09.313+0000 I NETWORK  &lt;span class=&quot;error&quot;&gt;&amp;#91;conn12945&amp;#93;&lt;/span&gt; SocketException handling request, closing client connection: 9001 socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;SEND_ERROR&amp;#93;&lt;/span&gt; server &lt;span class=&quot;error&quot;&gt;&amp;#91;10.0.1.102:46564&amp;#93;&lt;/span&gt; &lt;br/&gt;
2015-05-14T21:56:09.314+0000 I NETWORK  &lt;span class=&quot;error&quot;&gt;&amp;#91;conn13466&amp;#93;&lt;/span&gt; SocketException handling request, closing client connection: 9001 socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;SEND_ERROR&amp;#93;&lt;/span&gt; server &lt;span class=&quot;error&quot;&gt;&amp;#91;10.0.1.103:34850&amp;#93;&lt;/span&gt; &lt;br/&gt;
2015-05-14T21:56:09.314+0000 I NETWORK  &lt;span class=&quot;error&quot;&gt;&amp;#91;conn13391&amp;#93;&lt;/span&gt; SocketException handling request, closing client connection: 9001 socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;SEND_ERROR&amp;#93;&lt;/span&gt; server &lt;span class=&quot;error&quot;&gt;&amp;#91;10.0.1.103:34823&amp;#93;&lt;/span&gt; &lt;br/&gt;
2015-05-14T21:56:09.314+0000 I NETWORK  &lt;span class=&quot;error&quot;&gt;&amp;#91;conn13340&amp;#93;&lt;/span&gt; SocketException handling request, closing client connection: 9001 socket exception &lt;span class=&quot;error&quot;&gt;&amp;#91;SEND_ERROR&amp;#93;&lt;/span&gt; server &lt;span class=&quot;error&quot;&gt;&amp;#91;10.0.1.102:46726&amp;#93;&lt;/span&gt; &lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Java:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;DBPortPool.ConnectionWaitTimeOut: Connection wait timeout after 15000 ms InvalidDataAccessResourceUsageException: Connection wait timeout after 15000 ms; nested exception is com.mongodb.DBPortPool$ConnectionWaitTimeOut: Connection wait timeout after 15000 ms&lt;/p&gt;&lt;/blockquote&gt;
&lt;p&gt;Will re-test after update the Java driver.&lt;/p&gt;

&lt;p&gt;Thanks.&lt;/p&gt;</comment>
                            <comment id="913051" author="ramon.fernandez" created="Wed, 13 May 2015 17:06:56 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=fivoot&quot; class=&quot;user-hover&quot; rel=&quot;fivoot&quot;&gt;fivoot&lt;/a&gt;, this is not a supported configuration. As &lt;a href=&quot;http://docs.mongodb.org/manual/release-notes/3.0-upgrade/#change-replica-set-storage-engine-to-wiredtiger&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;noted in the documentation&lt;/a&gt;, you need to upgrade to 2.6.8 or newer before upgrading to 3.0.&lt;/p&gt;

&lt;p&gt;We haven&apos;t observed the behavior you describe in our internal upgrade testing. If you&apos;re interested in pursuing this please re-test with 2.6.8 or 2.6.9 and upload more information about your secondary (logs at logLevel 1, information from top/iostat, etc.).&lt;/p&gt;

&lt;p&gt;Cheers,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;
</comment>
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