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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
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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-44818] Change the balancerCollectionStatus command response format</title>
                <link>https://jira.mongodb.org/browse/SERVER-44818</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The current command response format is:&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;
&lt;p/&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    status: balanced|draining|zoneViolation|chunksImbalance&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;However, the &lt;b&gt;balanced&lt;/b&gt;&#160;response might be confusing because an user could&apos;ve configured a big number of chunks in a zone regardless of the number of shards in that zone, and this would show an uneven distribution of chunks on the cluster, which is completely valid and does not require any action on the part of the balancer.&lt;/p&gt;

&lt;p&gt;A better approach would be to add a boolean that indicates the fulfillment of the balancer policies, so there is no action required from the balancer:&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;
&lt;p/&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    balancerCompliant: &lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;true&lt;/span&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;|&lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;false&lt;/span&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;,&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    firstComplianceViolation: draining|zoneViolation|chunksImbalance &lt;/span&gt;&lt;span style=&quot;color: #008200; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;// only if balancerCompliant is false&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1024026">SERVER-44818</key>
            <summary>Change the balancerCollectionStatus command response format</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="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</assignee>
                                    <reporter username="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</reporter>
                        <labels>
                    </labels>
                <created>Mon, 25 Nov 2019 11:53:09 +0000</created>
                <updated>Sun, 29 Oct 2023 22:14:37 +0000</updated>
                            <resolved>Tue, 26 Nov 2019 19:05:54 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2566998" author="xgen-internal-githook" created="Tue, 26 Nov 2019 19:01:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Marcos Jos&#233; Grillo Ram&#237;rez&apos;, &apos;email&apos;: &apos;marcos.grillo@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44818&quot; title=&quot;Change the balancerCollectionStatus command response format&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44818&quot;&gt;&lt;del&gt;SERVER-44818&lt;/del&gt;&lt;/a&gt; Change the balancerCollectionStatus command response format&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2b70f6f0d7cf33dd387b50141992362fc4e2fcf8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2b70f6f0d7cf33dd387b50141992362fc4e2fcf8&lt;/a&gt;&lt;/p&gt;</comment>
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                            <customfieldvalue>New command output parameter can be found on:&lt;br/&gt;
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&lt;a href=&quot;https://docs.google.com/document/d/1LAsW5xOY4E6EUU7foBhLco-bqFpGx9wL9ORiPe7r2T0&quot;&gt;https://docs.google.com/document/d/1LAsW5xOY4E6EUU7foBhLco-bqFpGx9wL9ORiPe7r2T0&lt;/a&gt;</customfieldvalue>

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