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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-15948] Fast OplogStart mechanism for storage engines supporting arbitrary DiskLocs</title>
                <link>https://jira.mongodb.org/browse/SERVER-15948</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is an internal feature that storage engines can opt into.  If they support storing arbitrary keys as the loc in an insert, they can use the &quot;ts&quot; field from oplog entries (using the provided methods to extract the key). This allows replication to ask the storage engine where to look when a secondary tries to fetch oplog entries using a query like {ts: {$gt: OpTime(123, 445)}}.&lt;/p&gt;</description>
                <environment></environment>
        <key id="167258">SERVER-15948</key>
            <summary>Fast OplogStart mechanism for storage engines supporting arbitrary DiskLocs</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>Tue, 4 Nov 2014 17:57:06 +0000</created>
                <updated>Wed, 19 Nov 2014 16:26:07 +0000</updated>
                            <resolved>Tue, 4 Nov 2014 19:52:05 +0000</resolved>
                                                    <fixVersion>2.8.0-rc0</fixVersion>
                                    <component>Replication</component>
                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="756124" author="xgen-internal-githook" created="Tue, 4 Nov 2014 22:06:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15948&quot; title=&quot;Fast OplogStart mechanism for storage engines supporting arbitrary DiskLocs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15948&quot;&gt;&lt;del&gt;SERVER-15948&lt;/del&gt;&lt;/a&gt; dont run query_oplogreplay.js in sharding passthrough&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/100be46dd67ca36e90c281952295ec044929ff18&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/100be46dd67ca36e90c281952295ec044929ff18&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="755982" author="xgen-internal-githook" created="Tue, 4 Nov 2014 20:03:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15948&quot; title=&quot;Fast OplogStart mechanism for storage engines supporting arbitrary DiskLocs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15948&quot;&gt;&lt;del&gt;SERVER-15948&lt;/del&gt;&lt;/a&gt; Update tests to new definition of isOplog&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/39032e1e57c9426f057147ffb785ab8822ec5530&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/39032e1e57c9426f057147ffb785ab8822ec5530&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="755937" author="xgen-internal-githook" created="Tue, 4 Nov 2014 19:38:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15948&quot; title=&quot;Fast OplogStart mechanism for storage engines supporting arbitrary DiskLocs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15948&quot;&gt;&lt;del&gt;SERVER-15948&lt;/del&gt;&lt;/a&gt; add missing files&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4731939510292ac460decd503e7b0e984c09a569&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4731939510292ac460decd503e7b0e984c09a569&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="755906" author="xgen-internal-githook" created="Tue, 4 Nov 2014 19:14:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15948&quot; title=&quot;Fast OplogStart mechanism for storage engines supporting arbitrary DiskLocs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15948&quot;&gt;&lt;del&gt;SERVER-15948&lt;/del&gt;&lt;/a&gt; Fast OplogStart impl for RSs supporting arbitrary DiskLocs&lt;/p&gt;

&lt;p&gt;Storage engines must opt-in to this functionality. For now, heap1 is the only&lt;br/&gt;
one to do so.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d5f6eb21a94a39bd39c3c7a7b0ac107aca33a7e4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d5f6eb21a94a39bd39c3c7a7b0ac107aca33a7e4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="755905" author="xgen-internal-githook" created="Tue, 4 Nov 2014 19:14:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15948&quot; title=&quot;Fast OplogStart mechanism for storage engines supporting arbitrary DiskLocs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15948&quot;&gt;&lt;del&gt;SERVER-15948&lt;/del&gt;&lt;/a&gt; Fix tests inserting duplicate ts&apos;s into oplog&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f0bafc7c171217b7541d337723c6390a793be359&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f0bafc7c171217b7541d337723c6390a793be359&lt;/a&gt;&lt;/p&gt;</comment>
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