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    <title>MongoDB Jira</title>
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    <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-44923] update is too slow  when the chunk migration</title>
                <link>https://jira.mongodb.org/browse/SERVER-44923</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;hi&#160;&#160;&lt;/p&gt;

&lt;p&gt;&#160; &#160; i found the update operation would be too slow when the balancer is running( from&#160; 2019-11-27T13:40:00+0800&#160; to&#160; 2019-11-27T14:50:00+0800&#160; &#160; &#160;), so i want to&#160; check the chunk migration would&#160; influence the performance of the sharding cluster;&lt;/p&gt;

&lt;p&gt;&#160; &#160; after stopping the balancer, the update operation will be ok.&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1032108">SERVER-44923</key>
            <summary>update is too slow  when the chunk migration</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="13204">Community Answered</resolution>
                                        <assignee username="dmitry.agranat@mongodb.com">Dmitry Agranat</assignee>
                                    <reporter username="hmyyj126@126.com">ck wild</reporter>
                        <labels>
                    </labels>
                <created>Tue, 3 Dec 2019 03:12:38 +0000</created>
                <updated>Fri, 27 Oct 2023 15:56:37 +0000</updated>
                            <resolved>Wed, 4 Dec 2019 10:14:00 +0000</resolved>
                                    <version>3.4.23</version>
                                                    <component>Admin</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2582312" author="dmitry.agranat" created="Wed, 4 Dec 2019 10:13:38 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=hmyyj126%40126.com&quot; class=&quot;user-hover&quot; rel=&quot;hmyyj126@126.com&quot;&gt;hmyyj126@126.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Though the data you&apos;ve uploaded does not cover the time slot you&apos;ve mentioned (from 2019-11-27T13:40:00+0800 to 2019-11-27T14:50:00+0800), some operations latency might sometimes be impacted during chunk migration. In fact, I was able to see such occurrences during other times on November 27th, for example, between 09:12 and 10:32 UTC.&lt;/p&gt;

&lt;p&gt;I&apos;ve also noted the MongoDB version of the cluster is 3.4 which will be EOL in January. We recommend using the latest MongoDB version, which of today is &lt;a href=&quot;https://docs.mongodb.com/manual/release-notes/4.2/#oct-18-2019&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;4.2.1&lt;/a&gt;. If you suspect a bug or have a feature request, please upgrade your cluster to the latest MongoDB version and we&apos;ll be happy to assist.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Dima &lt;/p&gt;</comment>
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