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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-13024] Clear the &apos;jumbo&apos; flag from the chunk document when the chunk is no longer over-sized</title>
                <link>https://jira.mongodb.org/browse/SERVER-13024</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, if the balancer goes to split a chunk and cannot, the chunk gets marked as &apos;jumbo&apos;, which will prevent the balancer from migrating that chunk and from trying to split it again.&lt;/p&gt;

&lt;p&gt;If in the future, documents are deleted from that shard key range or the cluster&apos;s &lt;tt&gt;chunksize&lt;/tt&gt; setting changes, the chunk itself may no longer be &apos;jumbo&apos;, but MongoDB will not clear the &apos;jumbo&apos; flag from that chunk.  &lt;/p&gt;

&lt;p&gt;If you have a system where documents are short-lived (say, one week) and are then removed from the system, this will result in a system with a large number of chunks that are incorrectly marked &apos;jumbo&apos;.  In addition, the number of &apos;jumbo&apos; chunks will grow over time.&lt;/p&gt;</description>
                <environment></environment>
        <key id="117363">SERVER-13024</key>
            <summary>Clear the &apos;jumbo&apos; flag from the chunk document when the chunk is no longer over-sized</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="10033" iconUrl="https://jira.mongodb.org/images/icons/statuses/information.png" description="Status for tickets that need to be escalated and unblocked on our team.">Blocked</status>
                    <statusCategory id="4" key="indeterminate" colorName="inprogress"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-catalog-and-routing">Backlog - Catalog and Routing</assignee>
                                    <reporter username="william.zola@10gen.com">William Zola</reporter>
                        <labels>
                            <label>car-product-sync</label>
                            <label>oldshardingemea</label>
                    </labels>
                <created>Tue, 4 Mar 2014 16:10:13 +0000</created>
                <updated>Thu, 1 Feb 2024 10:58:10 +0000</updated>
                                                                            <component>Sharding</component>
                                        <votes>1</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="4173121" author="kaloian.manassiev" created="Sat, 6 Nov 2021 08:19:56 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tommaso.tocci&quot; class=&quot;user-hover&quot; rel=&quot;tommaso.tocci&quot;&gt;tommaso.tocci&lt;/a&gt;, I believe this might belong under the AutoSplitter project&apos;s subsequent milestones (if we will be doing something smarter around tracking deletes).&lt;/p&gt;</comment>
                            <comment id="1958712" author="kaloian.manassiev" created="Fri, 27 Jul 2018 16:34:54 +0000"  >&lt;p&gt;One thing that should also be noted is that since the balancer utilizes the catalog cache to get the jumbo status of chunks, it is not sufficient to just unset the jumbo field on the chunk, because due to incremental refresh these changes will not be seen in the balancer&apos;s cache.&lt;/p&gt;</comment>
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            <issuekey id="2563721">SERVER-86055</issuekey>
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            <issuekey id="97675">SERVER-11629</issuekey>
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            <issuelink>
            <issuekey id="139441">SERVER-14121</issuekey>
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            <issuelink>
            <issuekey id="162991">DOCS-4163</issuekey>
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            <issuekey id="212400">DOCS-5701</issuekey>
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            <issuekey id="134394">SERVER-13806</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="244329">SERVER-21931</issuekey>
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            <issuelink>
            <issuekey id="727680">SERVER-40435</issuekey>
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