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    <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-56441] Avoid allocate and copy metadata if we successfully lookup existing bucket</title>
                <link>https://jira.mongodb.org/browse/SERVER-56441</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55213&quot; title=&quot;Distinguish between null and missing for metadata in time-series collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55213&quot;&gt;&lt;del&gt;SERVER-55213&lt;/del&gt;&lt;/a&gt; we are no longer creating a modified metadata &lt;tt&gt;BSONObj&lt;/tt&gt; when creating &lt;tt&gt;BucketKey&lt;/tt&gt; when inserting documents into timeseries buckets. If we can find a bucket before having to normalize the metadata, we should not have to make the copy of the metadata into a new &lt;tt&gt;BSONObj&lt;/tt&gt; as we currently are doing at the beginning of &lt;tt&gt;BucketCatalog::insert&lt;/tt&gt;. &lt;/p&gt;

&lt;p&gt;To be able to handle all the different shapes of incoming metadata (missing, scalars or subobjects). We need to change how it is stored inside &lt;tt&gt;BucketMetadata&lt;/tt&gt; to be just the value buffer of the metadata &lt;tt&gt;BSONElement&lt;/tt&gt; owned or unowned. &lt;/p&gt;

&lt;p&gt;If we need to store the &lt;tt&gt;BucketMetadata&lt;/tt&gt; (creating new bucket etc) we need to copy and take ownership of the buffer.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1694555">SERVER-56441</key>
            <summary>Avoid allocate and copy metadata if we successfully lookup existing bucket</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13201">Fixed</resolution>
                                        <assignee username="yuhong.zhang@mongodb.com">Yuhong Zhang</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Wed, 28 Apr 2021 15:34:39 +0000</created>
                <updated>Sun, 29 Oct 2023 21:54:22 +0000</updated>
                            <resolved>Mon, 3 May 2021 18:52:19 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3751665" author="xgen-internal-githook" created="Mon, 3 May 2021 13:32:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Yuhong Zhang&apos;, &apos;email&apos;: &apos;danielzhangyh@gmail.com&apos;, &apos;username&apos;: &apos;YuhongZhang98&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56441&quot; title=&quot;Avoid allocate and copy metadata if we successfully lookup existing bucket&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56441&quot;&gt;&lt;del&gt;SERVER-56441&lt;/del&gt;&lt;/a&gt; Avoid allocate and copy metadata if we successfully lookup existing bucket&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f96326be159b4dda099fcf445ededb6ccaf95f6c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f96326be159b4dda099fcf445ededb6ccaf95f6c&lt;/a&gt;&lt;/p&gt;</comment>
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