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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-40231] Large difference in data size between shards</title>
                <link>https://jira.mongodb.org/browse/SERVER-40231</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Dear Team,&lt;br/&gt;
&#160;&lt;br/&gt;
Please find the below information that there is a huge difference in the data size between the shards.&lt;br/&gt;
&#160;&lt;br/&gt;
mongos&amp;gt; db.fs.chunks.getShardDistribution()&lt;br/&gt;
&#160;&lt;br/&gt;
Shard rs0 at rs0/Server1:27017,Server2:27017,Server3:27017&lt;br/&gt;
&#160;data : 940.71GiB docs : 3867359 chunks : 62967&lt;br/&gt;
&#160;estimated data per chunk : 15.29MiB&lt;br/&gt;
&#160;estimated docs per chunk : 61&lt;br/&gt;
&#160;&lt;br/&gt;
Shard rs1 at rs1/Server4:27017,Server5:27017,Server6:27017&lt;br/&gt;
&#160;data : 2389.37GiB docs : 9811392 chunks : 62966&lt;br/&gt;
&#160;estimated data per chunk : 38.85MiB&lt;br/&gt;
&#160;estimated docs per chunk : 155&lt;br/&gt;
&#160;&lt;br/&gt;
Totals&lt;br/&gt;
&#160;data : 3330.08GiB docs : 13678751 chunks : 125933&lt;br/&gt;
&#160;Shard rs0 contains 28.24% data, 28.27% docs in cluster, avg obj size on shard : 255KiB&lt;br/&gt;
&#160;Shard rs1 contains 71.75% data, 71.72% docs in cluster, avg obj size on shard : 255KiB&lt;br/&gt;
&#160;&lt;br/&gt;
Please help me resolving this issue and please let me know the cause of this issue.&#160;&lt;br/&gt;
&#160;&lt;br/&gt;
Thank you so much in advance.&#160;&lt;br/&gt;
&#160;&lt;br/&gt;
Best Regards,&lt;br/&gt;
Prinsha Tom.&lt;/p&gt;</description>
                <environment></environment>
        <key id="719800">SERVER-40231</key>
            <summary>Large difference in data size between shards</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="backlog-server-triage">Backlog - Triage Team</assignee>
                                    <reporter username="prinsha.mongo@gmail.com">Prinsha Tom</reporter>
                        <labels>
                    </labels>
                <created>Wed, 20 Mar 2019 07:43:28 +0000</created>
                <updated>Tue, 6 Dec 2022 03:03:06 +0000</updated>
                            <resolved>Wed, 20 Mar 2019 14:55:15 +0000</resolved>
                                    <version>3.2.16</version>
                                                    <component>Admin</component>
                    <component>Diagnostics</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2186145" author="daniel.hatcher" created="Wed, 20 Mar 2019 14:55:07 +0000"  >&lt;p&gt;Hello Prinsha,&lt;/p&gt;

&lt;p&gt;I notice that you are using GridFS. Please ensure that you have read our documentation on &lt;a href=&quot;https://docs.mongodb.com/manual/core/gridfs/index.html#sharding-gridfs&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;sharding GridFS&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Additionally, please note that MongoDB 3.2 has reached end-of-life and we encourage you to upgrade as soon as possible.&lt;/p&gt;

&lt;p&gt;The SERVER project is for bugs and feature suggestions for the MongoDB server. As this ticket does not appear to a bug, I will now close it. If you need further assistance troubleshooting, I encourage you to ask our community by posting on the &lt;a href=&quot;https://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 on &lt;a href=&quot;https://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;.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;/p&gt;

&lt;p&gt;Danny&lt;/p&gt;</comment>
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