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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-24071] Introduce ChunkRange class</title>
                <link>https://jira.mongodb.org/browse/SERVER-24071</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We find ourselves writing a lot of functions, which have a ton of arguments like &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.3.5/src/mongo/s/shard_util.cpp#L101&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this&lt;/a&gt;. The reason for this is that all shard manipulation methods require a complete shard description for error checking.&lt;/p&gt;

&lt;p&gt;Currently we have 4 different types which each represent and parse a chunk in a different way: Chunk, ChunkType, MoveChunkRequest, ChunkRange. We should unify all these into two structures, which inherit from each other:&lt;/p&gt;

&lt;p&gt;class ChunkRange - only contains min and max, which are the bounds of the chunk&lt;/p&gt;

&lt;p&gt;struct ChunkType : public ChunkRange - contains in addition the namespace, version, jumbo bit, shard and name of the chunk (which actually can be omitted since it&apos;s generated from the the min key).&lt;/p&gt;

&lt;p&gt;This ticket is for the ChunkRange structure.&lt;/p&gt;</description>
                <environment></environment>
        <key id="284806">SERVER-24071</key>
            <summary>Introduce ChunkRange class</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="9">Done</resolution>
                                        <assignee username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</reporter>
                        <labels>
                    </labels>
                <created>Thu, 5 May 2016 19:20:16 +0000</created>
                <updated>Mon, 16 May 2016 19:50:23 +0000</updated>
                            <resolved>Mon, 9 May 2016 14:12:18 +0000</resolved>
                                                    <fixVersion>3.3.6</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1261489" author="xgen-internal-githook" created="Wed, 11 May 2016 00:06:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kaloianm&apos;, u&apos;name&apos;: u&apos;Kaloian Manassiev&apos;, u&apos;email&apos;: u&apos;kaloian.manassiev@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24071&quot; title=&quot;Introduce ChunkRange class&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24071&quot;&gt;&lt;del&gt;SERVER-24071&lt;/del&gt;&lt;/a&gt; Introduce ChunkVersion legacy format parser&lt;/p&gt;

&lt;p&gt;This change goes towards cleaning up the ChunkVersion class so it has&lt;br/&gt;
clearly specified methods for the three variants of parsing, which it&lt;br/&gt;
supports.&lt;/p&gt;

&lt;p&gt;Also it moves all the catalog types to be under the s/common library so&lt;br/&gt;
they can be used not only from the catalog.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/995ca1226f958da71273266f2150349afc94e71a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/995ca1226f958da71273266f2150349afc94e71a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1260654" author="xgen-internal-githook" created="Tue, 10 May 2016 14:20:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kaloianm&apos;, u&apos;name&apos;: u&apos;Kaloian Manassiev&apos;, u&apos;email&apos;: u&apos;kaloian.manassiev@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24071&quot; title=&quot;Introduce ChunkRange class&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24071&quot;&gt;&lt;del&gt;SERVER-24071&lt;/del&gt;&lt;/a&gt; Use ChunkRange for parsing and creating chunk bounds&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1d897277a9226a374a084c86a922096071ad0b1b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1d897277a9226a374a084c86a922096071ad0b1b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1260645" author="xgen-internal-githook" created="Tue, 10 May 2016 14:17:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;GeertBosch&apos;, u&apos;name&apos;: u&apos;Geert Bosch&apos;, u&apos;email&apos;: u&apos;geert@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24071&quot; title=&quot;Introduce ChunkRange class&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24071&quot;&gt;&lt;del&gt;SERVER-24071&lt;/del&gt;&lt;/a&gt; Fix pessimizing move&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9f00caa5498c7b885035b83cd0ee6b661e24004a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9f00caa5498c7b885035b83cd0ee6b661e24004a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1259260" author="xgen-internal-githook" created="Mon, 9 May 2016 14:08:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kaloianm&apos;, u&apos;name&apos;: u&apos;Kaloian Manassiev&apos;, u&apos;email&apos;: u&apos;kaloian.manassiev@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24071&quot; title=&quot;Introduce ChunkRange class&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24071&quot;&gt;&lt;del&gt;SERVER-24071&lt;/del&gt;&lt;/a&gt; Introduce ChunkRange class&lt;/p&gt;

&lt;p&gt;This change introduces a ChunkRange class to be used for parsing and&lt;br/&gt;
serialization of chunk min and max bounds. It also switches the chunk&lt;br/&gt;
manager and sharding utilities to use ranges encoding the chunk bounds&lt;br/&gt;
separately.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4176a6eadb2598c54862d7d80369febf7e1ecce9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4176a6eadb2598c54862d7d80369febf7e1ecce9&lt;/a&gt;&lt;/p&gt;</comment>
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                                            <outwardlinks description="related to">
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            <issuekey id="285532">SERVER-24108</issuekey>
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