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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-24204] Balancer window to support days of the week</title>
                <link>https://jira.mongodb.org/browse/SERVER-24204</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;A customer had to restrict the balancer window to only 4 hours per day, when traffic is much lighter.&lt;br/&gt;
Chunk migrations keep falling behind due to the small balancing window.&lt;br/&gt;
The fix was to enable longer hours over the weekend, which also shows a much lighter traffic for that period.&lt;/p&gt;

&lt;p&gt;Since the balancer schedule only supports hours, alternatives were:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;manually change the schedule on Friday night and Sunday night&lt;/li&gt;
	&lt;li&gt;have a cron to make the changes to the schedule.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;In this case, it would have been helpful to be able to specify the hours per day in the schedule.&lt;/p&gt;</description>
                <environment></environment>
        <key id="287676">SERVER-24204</key>
            <summary>Balancer window to support days of the week</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-sharding-emea">[DO NOT USE] Backlog - Sharding EMEA</assignee>
                                    <reporter username="daniel.coupal@mongodb.com">Daniel Coupal</reporter>
                        <labels>
                            <label>balancer</label>
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                <created>Wed, 18 May 2016 22:17:28 +0000</created>
                <updated>Tue, 6 Dec 2022 04:25:23 +0000</updated>
                            <resolved>Thu, 13 Jan 2022 16:26:57 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>1</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4291108" author="connie.chen" created="Thu, 13 Jan 2022 16:26:57 +0000"  >&lt;p&gt;This is a specific solution, we will be solving this by making the balancer not impactful. Work will be tracked as part of the PM-2142: Always-On Balancer projects&lt;/p&gt;</comment>
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