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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-952] Don&apos;t do linear scans of chunks in mongos</title>
                <link>https://jira.mongodb.org/browse/SERVER-952</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="11264">SERVER-952</key>
            <summary>Don&apos;t do linear scans of chunks in mongos</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="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                    </labels>
                <created>Mon, 8 Feb 2010 12:42:21 +0000</created>
                <updated>Tue, 12 Jul 2016 00:27:20 +0000</updated>
                            <resolved>Thu, 15 Jul 2010 20:44:03 +0000</resolved>
                                                    <fixVersion>1.5.5</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="15858" author="redbeard0531" created="Thu, 15 Jul 2010 20:44:03 +0000"  >&lt;p&gt;Still a few linear scans on splits/migrates, but no user ops do scans any more so closing&lt;/p&gt;</comment>
                            <comment id="15663" author="auto" created="Mon, 12 Jul 2010 16:00:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: remove getChunksForQuery &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/77622da34748e602c76923556de31fbaffc7c959&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/77622da34748e602c76923556de31fbaffc7c959&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="15662" author="auto" created="Mon, 12 Jul 2010 16:00:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Sharded findAndModify now requires shard key in query &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/b2420ca55ff787d20a848e8b7b7d301fc28bd446&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/b2420ca55ff787d20a848e8b7b7d301fc28bd446&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="15660" author="auto" created="Mon, 12 Jul 2010 16:00:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: fix Sharded MR &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/bf391f294954076a7bc8b87bdfacd1a779d1d134&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/bf391f294954076a7bc8b87bdfacd1a779d1d134&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="15659" author="auto" created="Mon, 12 Jul 2010 16:00:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Sharded distinct uses shards not chunks &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/4676c5ac07fe44ae985cfd7fbb0c68c0f90f5f9f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/4676c5ac07fe44ae985cfd7fbb0c68c0f90f5f9f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="15211" author="auto" created="Tue, 29 Jun 2010 21:11:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Start using getShardsForQuery &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/43d5954d08bbc9b154d18184abf74dd278412b86&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/43d5954d08bbc9b154d18184abf74dd278412b86&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="15210" author="auto" created="Tue, 29 Jun 2010 21:11:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: cache list of shards &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/3b37957322b3b00c783c9a90e7afdfeb8f25f4c6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/3b37957322b3b00c783c9a90e7afdfeb8f25f4c6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="13773" author="auto" created="Thu, 22 Apr 2010 16:09:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;redbeard0531@gmail.com&apos;}
&lt;p&gt;Message: ChunkManager::getShardsForQuery &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-943&quot; title=&quot;do chunk filtering in mongod (WAS: Make receiving mongod ignore objects during migration)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-943&quot;&gt;&lt;del&gt;SERVER-943&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/bbb8ca9316ca429cb15aaeb7f917b3a1903b3aca&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/bbb8ca9316ca429cb15aaeb7f917b3a1903b3aca&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="13768" author="redbeard0531" created="Thu, 22 Apr 2010 12:42:33 +0000"  >&lt;p&gt;Waiting for server-943 to eliminate all linear scans of chunks.&lt;/p&gt;</comment>
                            <comment id="13578" author="auto" created="Mon, 12 Apr 2010 23:08:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Use FieldRangeSet to pick chunks for queries. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-954&quot; title=&quot;$in support&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-954&quot;&gt;&lt;del&gt;SERVER-954&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SERVER-952&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-947&quot; title=&quot;finish ShardKeyPattern::relevant - handle all query types&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-947&quot;&gt;&lt;del&gt;SERVER-947&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/bc63a3f9c7e3add53e5e86f3041a3d4825ff3c82&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/bc63a3f9c7e3add53e5e86f3041a3d4825ff3c82&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="13380" author="auto" created="Thu, 1 Apr 2010 15:43:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Add chunkMap to ChunkManager. Start of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-952&quot; title=&quot;Don&amp;#39;t do linear scans of chunks in mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-952&quot;&gt;&lt;del&gt;SHARDING-79&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/3a252136550aa3a0dd2d4e774efedfa951029c98&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/3a252136550aa3a0dd2d4e774efedfa951029c98&lt;/a&gt;&lt;/p&gt;</comment>
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