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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-2419] Chunks on same server incorrectly calculate central keys for split</title>
                <link>https://jira.mongodb.org/browse/SERVER-2419</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When multiple chunks are present on the same server for the same collection, the split key is automatically calculated as the key at half the &lt;b&gt;total&lt;/b&gt; size of the index, not the size of the individual chunk.  This leads to errors when the chunk size is smaller than half the total index size.  Included test reproduces.&lt;/p&gt;</description>
                <environment>Linux Ubuntu SMP Thu Dec 2 02:41:37 UTC 2010 x86_64 GNU/Linux&lt;br/&gt;
</environment>
        <key id="14331">SERVER-2419</key>
            <summary>Chunks on same server incorrectly calculate central keys for split</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="eliot">Eliot Horowitz</assignee>
                                    <reporter username="greg_10gen">Greg Studer</reporter>
                        <labels>
                    </labels>
                <created>Thu, 27 Jan 2011 16:58:01 +0000</created>
                <updated>Tue, 12 Jul 2016 00:18:48 +0000</updated>
                            <resolved>Sun, 6 Mar 2011 07:52:21 +0000</resolved>
                                                    <fixVersion>1.9.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="25371" author="auto" created="Mon, 7 Mar 2011 01:22:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: make forcing a split work better &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2419&quot; title=&quot;Chunks on same server incorrectly calculate central keys for split&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2419&quot;&gt;&lt;del&gt;SERVER-2419&lt;/del&gt;&lt;/a&gt; 180?&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e521301d18cddf2765a8a392d1ecaccf7e726e20&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e521301d18cddf2765a8a392d1ecaccf7e726e20&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="25358" author="auto" created="Sun, 6 Mar 2011 07:52:22 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: test for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2419&quot; title=&quot;Chunks on same server incorrectly calculate central keys for split&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2419&quot;&gt;&lt;del&gt;SERVER-2419&lt;/del&gt;&lt;/a&gt; from greg&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/afcf141e33a7d48ac396ea53125d0d8d71a33af7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/afcf141e33a7d48ac396ea53125d0d8d71a33af7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="25357" author="auto" created="Sun, 6 Mar 2011 07:52:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: make forcing a split work better &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2419&quot; title=&quot;Chunks on same server incorrectly calculate central keys for split&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2419&quot;&gt;&lt;del&gt;SERVER-2419&lt;/del&gt;&lt;/a&gt; 180?&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a7c5ebf735ac92db6f62c12a2e7dd4dc753fb2fe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a7c5ebf735ac92db6f62c12a2e7dd4dc753fb2fe&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="25250" author="greg_10gen" created="Fri, 4 Mar 2011 17:16:35 +0000"  >&lt;p&gt;Fix for the issue&lt;/p&gt;</comment>
                            <comment id="25170" author="greg_10gen" created="Thu, 3 Mar 2011 19:49:28 +0000"  >&lt;p&gt;Fix available if needed, scans full index only if bounds on index different than chunk bounds.  &lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="14332">SERVER-2420</issuekey>
        </issuelink>
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                <attachments>
                            <attachment id="10984" name="diff_for_fix.diff" size="8770" author="greg_10gen" created="Fri, 4 Mar 2011 17:16:35 +0000"/>
                            <attachment id="10746" name="shard_keycount.js" size="1204" author="greg_10gen" created="Thu, 27 Jan 2011 16:58:01 +0000"/>
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