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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-9114] Add balancer strategy that balances based on working set estimation</title>
                <link>https://jira.mongodb.org/browse/SERVER-9114</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Would be nice to have a balancing strategy that uses the working set estimator to pick chunks to migrate based on trying to evenly distribute the working set across shards.&lt;/p&gt;</description>
                <environment></environment>
        <key id="69626">SERVER-9114</key>
            <summary>Add balancer strategy that balances based on working set estimation</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-cluster-scalability">Backlog - Cluster Scalability</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                            <label>balancer</label>
                            <label>balancingStrategy</label>
                            <label>chunks</label>
                            <label>mongos</label>
                            <label>oldshardingemea</label>
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                <created>Mon, 25 Mar 2013 14:36:15 +0000</created>
                <updated>Tue, 16 Jan 2024 14:18:30 +0000</updated>
                                                                            <component>Sharding</component>
                                        <votes>2</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="5121017" author="connie.chen" created="Wed, 18 Jan 2023 15:37:39 +0000"  >&lt;p&gt;Taking out of PM-631 and placing in &quot;Needs Scheduling&quot; since we have closed PM-631 as won&apos;t do&#160;&lt;/p&gt;</comment>
                            <comment id="297932" author="scotthernandez" created="Mon, 25 Mar 2013 15:59:36 +0000"  >&lt;p&gt;I don&apos;t think we need storage by chunk first. Simply moving (active) chunks to the shard with the most effective working set will do it.&lt;/p&gt;</comment>
                            <comment id="297847" author="spencer" created="Mon, 25 Mar 2013 14:38:09 +0000"  >&lt;p&gt;Having a way to group document on-disk order by chunk is likely a prerequisite for this.&lt;/p&gt;</comment>
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            <issuekey id="14477">SERVER-2472</issuekey>
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            <issuekey id="31307">SERVER-5047</issuekey>
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            <issuelink>
            <issuekey id="69650">SERVER-9120</issuekey>
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            <issuelink>
            <issuekey id="18463">SERVER-3294</issuekey>
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