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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-68323] Decompress BSONColumn one control block at a time</title>
                <link>https://jira.mongodb.org/browse/SERVER-68323</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;By decompressing one control block at a time in BSONColumn we can reduce the amount of state required in the BSONColumn::Iterator and perform the Simple8b unpacking in a tight(er) loop. This should improve the cache locality and be a performance improvement for the regular case.&lt;/p&gt;

&lt;p&gt;Decompressing objects will be a little more complex as we will need to keep track of decompressed BSONElement per sub-stream and cannot build the returned BSONObj inplace. &lt;/p&gt;

&lt;p&gt;But this tradeoff is most likely acceptable as we should optimize for the most common cases. This can also be a stepping stone towards partial Object decompression where queries are only interested in a subset of the streams.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2099538">SERVER-68323</key>
            <summary>Decompress BSONColumn one control block at a time</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                            <label>BSON</label>
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                <created>Tue, 26 Jul 2022 17:50:36 +0000</created>
                <updated>Mon, 11 Dec 2023 19:30:59 +0000</updated>
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