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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-43898] Add more unit tests for balancer_policy.cpp and balancer_chunk_selection_policy.cpp</title>
                <link>https://jira.mongodb.org/browse/SERVER-43898</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Based from gcov, picked only stuff worth testing&lt;/p&gt;

&lt;p&gt;Zone ranges overlaps while balancing&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/946189b0389432037c248835c8f2924d7a0c8e5d/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.cpp#L106&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/946189b0389432037c248835c8f2924d7a0c8e5d/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.cpp#L106&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Zone min key does not align with an actual chunk min key&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/946189b0389432037c248835c8f2924d7a0c8e5d/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.cpp#L442&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/946189b0389432037c248835c8f2924d7a0c8e5d/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.cpp#L442&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Zone max key does not align with an actual chunk max key&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/946189b0389432037c248835c8f2924d7a0c8e5d/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.cpp#L461&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/946189b0389432037c248835c8f2924d7a0c8e5d/src/mongo/db/s/balancer/balancer_chunk_selection_policy_impl.cpp#L461&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Chunks are already well balanced in the zone&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/f1a3b974c9b8f9519bbc317859a8ff9bde62e72a/src/mongo/db/s/balancer/balancer_policy.cpp#L564&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/f1a3b974c9b8f9519bbc317859a8ff9bde62e72a/src/mongo/db/s/balancer/balancer_policy.cpp#L564&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Most overloaded shard has different tags&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/f1a3b974c9b8f9519bbc317859a8ff9bde62e72a/src/mongo/db/s/balancer/balancer_policy.cpp#L572&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/f1a3b974c9b8f9519bbc317859a8ff9bde62e72a/src/mongo/db/s/balancer/balancer_policy.cpp#L572&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="964963">SERVER-43898</key>
            <summary>Add more unit tests for balancer_policy.cpp and balancer_chunk_selection_policy.cpp</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="cheahuychou.mao@mongodb.com">Cheahuychou Mao</assignee>
                                    <reporter username="randolph@mongodb.com">Randolph Tan</reporter>
                        <labels>
                    </labels>
                <created>Tue, 8 Oct 2019 20:51:10 +0000</created>
                <updated>Sun, 29 Oct 2023 22:16:18 +0000</updated>
                            <resolved>Tue, 19 Nov 2019 17:00:03 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2549396" author="xgen-internal-githook" created="Tue, 19 Nov 2019 16:58:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Cheahuychou Mao&apos;, &apos;username&apos;: &apos;cheahuychou&apos;, &apos;email&apos;: &apos;cheahuychou.mao@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43898&quot; title=&quot;Add more unit tests for balancer_policy.cpp and balancer_chunk_selection_policy.cpp&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43898&quot;&gt;&lt;del&gt;SERVER-43898&lt;/del&gt;&lt;/a&gt; Add more unit tests for balancer_policy.cpp and balancer_chunk_selection_policy.cpp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/80d1587acb9e445cad81848a0c4b90f01bb9e00a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/80d1587acb9e445cad81848a0c4b90f01bb9e00a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2473670" author="renctan" created="Wed, 9 Oct 2019 13:56:10 +0000"  >&lt;p&gt;It was a mistake. It must be because help tickets have question type and it stayed as question when I switched to server ticket&lt;/p&gt;</comment>
                            <comment id="2473366" author="kaloian.manassiev" created="Wed, 9 Oct 2019 09:27:24 +0000"  >&lt;p&gt;What is the question here, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=renctan&quot; class=&quot;user-hover&quot; rel=&quot;renctan&quot;&gt;renctan&lt;/a&gt; (because the ticket is of type question and also is in Needs Scheduling)?&lt;/p&gt;</comment>
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