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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-75082] Make balancer migrations throttling configurable</title>
                <link>https://jira.mongodb.org/browse/SERVER-75082</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Make the following parameters configurable:&lt;/p&gt;

&lt;p&gt;&lt;ins&gt;&lt;b&gt;Balancer Migrations Throttling&lt;/b&gt;&lt;/ins&gt;&lt;br/&gt;
Currently the minimum time between migrations is hardcoded to 1 sec. The new configurable parameter will be defaulted to 1 sec as well.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2293285">SERVER-75082</key>
            <summary>Make balancer migrations throttling configurable</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13201">Fixed</resolution>
                                        <assignee username="silvia.surroca@mongodb.com">Silvia Surroca</assignee>
                                    <reporter username="silvia.surroca@mongodb.com">Silvia Surroca</reporter>
                        <labels>
                            <label>balancer-perf-improvement</label>
                    </labels>
                <created>Tue, 21 Mar 2023 11:13:03 +0000</created>
                <updated>Sun, 29 Oct 2023 21:24:35 +0000</updated>
                            <resolved>Thu, 30 Mar 2023 10:30:56 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                    <fixVersion>6.0.6</fixVersion>
                    <fixVersion>5.0.18</fixVersion>
                    <fixVersion>6.3.2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5374190" author="xgen-internal-githook" created="Tue, 25 Apr 2023 16:08:19 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Silvia Surroca&apos;, &apos;email&apos;: &apos;silvia.surroca@mongodb.com&apos;, &apos;username&apos;: &apos;silviasuhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75082&quot; title=&quot;Make balancer migrations throttling configurable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75082&quot;&gt;&lt;del&gt;SERVER-75082&lt;/del&gt;&lt;/a&gt; Make balancer migrations throttling configurable&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8a32fea7ddff18367e50f2490888bbcd1823ba22&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8a32fea7ddff18367e50f2490888bbcd1823ba22&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5372904" author="xgen-internal-githook" created="Tue, 25 Apr 2023 09:06:57 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Silvia Surroca&apos;, &apos;email&apos;: &apos;silvia.surroca@mongodb.com&apos;, &apos;username&apos;: &apos;silviasuhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75082&quot; title=&quot;Make balancer migrations throttling configurable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75082&quot;&gt;&lt;del&gt;SERVER-75082&lt;/del&gt;&lt;/a&gt; Make balancer migrations throttling configurable&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8263eaa084ca236a1b0499ea4379160e00e16be8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8263eaa084ca236a1b0499ea4379160e00e16be8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5371266" author="xgen-internal-githook" created="Mon, 24 Apr 2023 17:17:15 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Silvia Surroca&apos;, &apos;email&apos;: &apos;silvia.surroca@mongodb.com&apos;, &apos;username&apos;: &apos;silviasuhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75082&quot; title=&quot;Make balancer migrations throttling configurable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75082&quot;&gt;&lt;del&gt;SERVER-75082&lt;/del&gt;&lt;/a&gt; Make balancer migrations throttling configurable&lt;br/&gt;
Branch: v6.3&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e53cd1b96b3c06025b27eb51e5627ba3fb190860&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e53cd1b96b3c06025b27eb51e5627ba3fb190860&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5311472" author="xgen-internal-githook" created="Thu, 30 Mar 2023 10:29:29 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Silvia Surroca&apos;, &apos;email&apos;: &apos;silvia.surroca@mongodb.com&apos;, &apos;username&apos;: &apos;silviasuhu&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75082&quot; title=&quot;Make balancer migrations throttling configurable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75082&quot;&gt;&lt;del&gt;SERVER-75082&lt;/del&gt;&lt;/a&gt; Make balancer migrations throttling configurable&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a9c5fa2bed9763091b65998edcbee3532f6062ae&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a9c5fa2bed9763091b65998edcbee3532f6062ae&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2109463">SERVER-68670</issuekey>
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            <issuekey id="2296575">SERVER-75199</issuekey>
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                            <customfieldvalue>WE introduced a new server parameter &amp;quot;balancerMigrationsThrottlingMs&amp;quot; on the config server  that allows to throttle balancing operation.&lt;br/&gt;
&lt;br/&gt;
&lt;br/&gt;
description: The minimum amount of time between two consecutive balancing rounds&lt;br/&gt;
&lt;br/&gt;
Sleep between balancer rounds in the case where the last round found some chunks which needed to be balanced. This value should be set sufficiently low so that imbalanced clusters will quickly reach balanced state, but setting it too low may cause CRUD operations to start failing due to not being able to establish a stable shard version.</customfieldvalue>

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