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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-58650] Extract splitVector logic for the auto splitter into a new function</title>
                <link>https://jira.mongodb.org/browse/SERVER-58650</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/s/split_vector.h&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;splitVector&lt;/a&gt; function is currently serving 3 different purposes:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Provide users a way to determine bounds for parallelizing data processing, through the &lt;a href=&quot;https://docs.mongodb.com/v5.0/reference/command/splitVector/index.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;splitVector command&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;Determine the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/f4169a7378cb724c2901042303c6e57be4f65733/src/mongo/s/shard_util.cpp#L99&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;initial split points&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;Determine the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/f4169a7378cb724c2901042303c6e57be4f65733/src/mongo/db/s/chunk_splitter.cpp#L339-L347&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;auto-splitter&apos;s split points&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Objective of this ticket is to extract the logic currently used by the chunk splitter - basically copy the &lt;tt&gt;splitVector&lt;/tt&gt; function and &quot;peel&quot; the code not reached during auto splitting - into a different function to be backported with minimum effort.&lt;/p&gt;

&lt;p&gt;This is a precondition for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55028&quot; title=&quot;Improve the auto-splitter policy&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55028&quot;&gt;&lt;del&gt;SERVER-55028&lt;/del&gt;&lt;/a&gt; aimed to improve chunk splitter&apos;s split points selection policy without impacting the user-facing &lt;tt&gt;splitVector&lt;/tt&gt; behavior.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1823556">SERVER-58650</key>
            <summary>Extract splitVector logic for the auto splitter into a new function</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="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                            <label>PM-2321-Chunk-Splitter</label>
                    </labels>
                <created>Mon, 19 Jul 2021 08:29:01 +0000</created>
                <updated>Sun, 29 Oct 2023 21:50:44 +0000</updated>
                            <resolved>Mon, 19 Jul 2021 12:20:51 +0000</resolved>
                                                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="4107302" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:22:48 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3949169" author="xgen-internal-githook" created="Mon, 19 Jul 2021 11:57:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Pierlauro Sciarelli&apos;, &apos;email&apos;: &apos;pierlauro.sciarelli@mongodb.com&apos;, &apos;username&apos;: &apos;pierlauro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58650&quot; title=&quot;Extract splitVector logic for the auto splitter into a new function&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58650&quot;&gt;&lt;del&gt;SERVER-58650&lt;/del&gt;&lt;/a&gt; Extract splitVector logic for the auto splitter into a new function&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ccba6ffd40461675c4a5558c7fceeeb996a85a10&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ccba6ffd40461675c4a5558c7fceeeb996a85a10&lt;/a&gt;&lt;/p&gt;</comment>
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