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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-82834] Balancer continusly logs if cluster can&apos;t be balance due to zones</title>
                <link>https://jira.mongodb.org/browse/SERVER-82834</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If zones are configured for a collection, it is totally possible and expected that we end up with an imbalance collection because there is only one shard in a specific zone, so that shard can&apos;t donate its chunks to another shard because it would violate zones policy.&lt;/p&gt;

&lt;p&gt;If this happens, the balancer will continuously emit &lt;a href=&quot;https://github.com/mongodb/mongo/blob/463a09d5b0af502ce070b5c3e7e88ba13a8da1ca/src/mongo/db/s/balancer/balancer_policy.cpp#L601&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this log&lt;/a&gt;:&lt;/p&gt;
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&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 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;No available shards to take chunks for zone&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;we should double check which version are affected, for sure in 6.0+ we have this problem.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2491847">SERVER-82834</key>
            <summary>Balancer continusly logs if cluster can&apos;t be balance due to zones</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-catalog-and-routing">Backlog - Catalog and Routing</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                            <label>car-qw</label>
                    </labels>
                <created>Mon, 6 Nov 2023 18:32:23 +0000</created>
                <updated>Thu, 9 Nov 2023 11:22:15 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>1</watches>
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