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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[CSHARP-1067] ObjectId could have a slightly smaller internal representation</title>
                <link>https://jira.mongodb.org/browse/CSHARP-1067</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description>&lt;p&gt;An ObjectId is 12 bytes long, but our current implementation:&lt;/p&gt;

&lt;p/&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;private int _machine;&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;private short _pid;&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;private int _increment;&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;means that 14 bytes are used. (two fields, _machine and _increment, are 1 byte larger than they need to be).&lt;/p&gt;

&lt;p&gt;We could instead represent the 12 bytes internally as:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;private int _a;&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;private int _b;&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;private int _c;&lt;/span&gt;&lt;/pre&gt;
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&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Which is exactly 12 bytes.&lt;/p&gt;

&lt;p&gt;We could easily reimplement the Timestamp, MachineId, Pid and Increment properties to extract the necessary bytes from _a, _b and _c and synthesize the corresponding return value, so this would not be a backward breaking change.&lt;/p&gt;</description>
                <environment></environment>
        <key id="158525">CSHARP-1067</key>
            <summary>ObjectId could have a slightly smaller internal representation</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="robert@mongodb.com">Robert Stam</assignee>
                                    <reporter username="robert@mongodb.com">Robert Stam</reporter>
                        <labels>
                    </labels>
                <created>Tue, 16 Sep 2014 21:16:40 +0000</created>
                <updated>Wed, 20 Jan 2016 20:09:50 +0000</updated>
                            <resolved>Mon, 10 Aug 2015 17:42:10 +0000</resolved>
                                                    <fixVersion>2.1</fixVersion>
                                    <component>BSON</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1000914" author="xgen-internal-githook" created="Mon, 10 Aug 2015 17:41:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;rstam&apos;, u&apos;name&apos;: u&apos;rstam&apos;, u&apos;email&apos;: u&apos;robert@robertstam.org&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-1067&quot; title=&quot;ObjectId could have a slightly smaller internal representation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-1067&quot;&gt;&lt;del&gt;CSHARP-1067&lt;/del&gt;&lt;/a&gt;: Added FromByteArray helper method.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/a9be63b3433fae698b966a22c582c74618977161&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/a9be63b3433fae698b966a22c582c74618977161&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1000913" author="xgen-internal-githook" created="Mon, 10 Aug 2015 17:41:51 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;rstam&apos;, u&apos;name&apos;: u&apos;rstam&apos;, u&apos;email&apos;: u&apos;robert@robertstam.org&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-1067&quot; title=&quot;ObjectId could have a slightly smaller internal representation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-1067&quot;&gt;&lt;del&gt;CSHARP-1067&lt;/del&gt;&lt;/a&gt;: Code review changes.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/fd39739389f6fc9101ac811127dd951c7593c82e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/fd39739389f6fc9101ac811127dd951c7593c82e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1000912" author="xgen-internal-githook" created="Mon, 10 Aug 2015 17:41:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;rstam&apos;, u&apos;name&apos;: u&apos;rstam&apos;, u&apos;email&apos;: u&apos;robert@robertstam.org&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-1067&quot; title=&quot;ObjectId could have a slightly smaller internal representation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-1067&quot;&gt;&lt;del&gt;CSHARP-1067&lt;/del&gt;&lt;/a&gt;: Use slightly smaller internal representation for ObjectId.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/89944e07d11ad360680d7aa7065d7828a07f9af6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/89944e07d11ad360680d7aa7065d7828a07f9af6&lt;/a&gt;&lt;/p&gt;</comment>
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