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    <title>MongoDB Jira</title>
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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-30264] Delete ChunkSizeTracker</title>
                <link>https://jira.mongodb.org/browse/SERVER-30264</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Because &lt;tt&gt;RangeMap&lt;/tt&gt; has severe performance issues, &lt;tt&gt;ChunkSizeTracker&lt;/tt&gt; will no longer be used, and &lt;tt&gt;ChunkManager&lt;/tt&gt; will be used in its place to keep track of chunk sizes.&lt;/p&gt;

&lt;p&gt;&lt;tt&gt;ChunkSizeTracker&lt;/tt&gt; and its unit tests should be deleted.&lt;/p&gt;</description>
                <environment></environment>
        <key id="406898">SERVER-30264</key>
            <summary>Delete ChunkSizeTracker</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="hugh.han">Hugh Han</assignee>
                                    <reporter username="hugh.han">Hugh Han</reporter>
                        <labels>
                            <label>sharding</label>
                    </labels>
                <created>Fri, 21 Jul 2017 17:23:10 +0000</created>
                <updated>Mon, 30 Oct 2023 23:15:02 +0000</updated>
                            <resolved>Wed, 26 Jul 2017 15:10:43 +0000</resolved>
                                    <version>3.5.10</version>
                                    <fixVersion>3.5.11</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1630540" author="xgen-internal-githook" created="Mon, 24 Jul 2017 20:59:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;hughhan1&apos;, &apos;name&apos;: &apos;Hugh Han&apos;, &apos;email&apos;: &apos;hughhan1@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30264&quot; title=&quot;Delete ChunkSizeTracker&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30264&quot;&gt;&lt;del&gt;SERVER-30264&lt;/del&gt;&lt;/a&gt; Delete ChunkSizeTracker&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/65bd8a5cb7898cff64e78ed34c084481c070a889&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/65bd8a5cb7898cff64e78ed34c084481c070a889&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1629395" author="xgen-internal-githook" created="Sat, 22 Jul 2017 23:15:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hughhan1&apos;, u&apos;name&apos;: u&apos;Hugh Han&apos;, u&apos;email&apos;: u&apos;hughhan1@gmail.com&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30264&quot; title=&quot;Delete ChunkSizeTracker&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30264&quot;&gt;&lt;del&gt;SERVER-30264&lt;/del&gt;&lt;/a&gt; Delete ChunkSizeTracker&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit c659868c14e86fe8d57aca9eb8603002d4d73b07.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7a00251a987ec937f81536f4ff6beca4648071ae&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7a00251a987ec937f81536f4ff6beca4648071ae&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1629394" author="xgen-internal-githook" created="Sat, 22 Jul 2017 23:07:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hughhan1&apos;, u&apos;name&apos;: u&apos;Hugh Han&apos;, u&apos;email&apos;: u&apos;hughhan1@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30264&quot; title=&quot;Delete ChunkSizeTracker&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30264&quot;&gt;&lt;del&gt;SERVER-30264&lt;/del&gt;&lt;/a&gt; Delete ChunkSizeTracker&lt;/p&gt;

&lt;p&gt;Because RangeMap has severe performance issues, ChunkSizeTracker will no longer be used, and ChunkManager will be used in its place to keep track of chunk sizes.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c659868c14e86fe8d57aca9eb8603002d4d73b07&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c659868c14e86fe8d57aca9eb8603002d4d73b07&lt;/a&gt;&lt;/p&gt;</comment>
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