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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-53395] Use delta format for updating timeseries buckets</title>
                <link>https://jira.mongodb.org/browse/SERVER-53395</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we create update operations using &lt;tt&gt;$set&lt;/tt&gt; to perform timeseries inserts into existing buckets. However, because &lt;tt&gt;$set&lt;/tt&gt; inserts new fields into a sorted position for idempotency reasons, this means that the bucket orders elements in order like:&lt;/p&gt;
&lt;p/&gt;
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&lt;p/&gt;
&lt;p&gt;This is a problem for unwinding and will also make it impossible to implement future optimizations to efficiency: eventually, we&apos;d like to be able to blindly append new fields to the end of existing objects without parsing all existing fields.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1570517">SERVER-53395</key>
            <summary>Use delta format for updating timeseries buckets</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="benety.goh@mongodb.com">Benety Goh</assignee>
                                    <reporter username="geert.bosch@mongodb.com">Geert Bosch</reporter>
                        <labels>
                    </labels>
                <created>Wed, 16 Dec 2020 18:31:45 +0000</created>
                <updated>Sun, 29 Oct 2023 21:59:30 +0000</updated>
                            <resolved>Fri, 18 Dec 2020 22:50:51 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="3537019" author="benety.goh" created="Fri, 18 Dec 2020 22:48:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53395&quot; title=&quot;Use delta format for updating timeseries buckets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53395&quot;&gt;&lt;del&gt;SERVER-53395&lt;/del&gt;&lt;/a&gt; UpdateDriver::parse() supports delta updates for non-oplog application&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a2a154c9a9aa133603d0f2797d77479a7f192ac8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a2a154c9a9aa133603d0f2797d77479a7f192ac8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3536971" author="xgen-internal-githook" created="Fri, 18 Dec 2020 22:17:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53395&quot; title=&quot;Use delta format for updating timeseries buckets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53395&quot;&gt;&lt;del&gt;SERVER-53395&lt;/del&gt;&lt;/a&gt; time-series insert uses delta updates instead of classic update&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a56d682b08d9a72ef54fde6d47c978b8eb54bfbc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a56d682b08d9a72ef54fde6d47c978b8eb54bfbc&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3536632" author="xgen-internal-githook" created="Fri, 18 Dec 2020 19:22:37 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53395&quot; title=&quot;Use delta format for updating timeseries buckets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53395&quot;&gt;&lt;del&gt;SERVER-53395&lt;/del&gt;&lt;/a&gt; time-series bucket update creates write_ops::Update, bypassing OpMsgRequest&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a95a13a20fdc09c856e621588d3eb13a5048b5c8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a95a13a20fdc09c856e621588d3eb13a5048b5c8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3536576" author="xgen-internal-githook" created="Fri, 18 Dec 2020 18:55:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53395&quot; title=&quot;Use delta format for updating timeseries buckets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53395&quot;&gt;&lt;del&gt;SERVER-53395&lt;/del&gt;&lt;/a&gt; bucket catalog should recalculate new fields and size delta when current bucket is full&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7cf4ce85c46013c41e57cc581abe23b89028f85a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7cf4ce85c46013c41e57cc581abe23b89028f85a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3536258" author="xgen-internal-githook" created="Fri, 18 Dec 2020 16:19:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53395&quot; title=&quot;Use delta format for updating timeseries buckets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53395&quot;&gt;&lt;del&gt;SERVER-53395&lt;/del&gt;&lt;/a&gt; BucketCatalog::commit() returns new fields added&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6dfd7c3ce2a9ba4f9eab989291ce03bd8074d01a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6dfd7c3ce2a9ba4f9eab989291ce03bd8074d01a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3536193" author="xgen-internal-githook" created="Fri, 18 Dec 2020 15:46:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53395&quot; title=&quot;Use delta format for updating timeseries buckets&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53395&quot;&gt;&lt;del&gt;SERVER-53395&lt;/del&gt;&lt;/a&gt; split upsert logic for time-series into insert and update code paths&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b901834c41fa9ce4a206f464f36739f271c02980&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b901834c41fa9ce4a206f464f36739f271c02980&lt;/a&gt;&lt;/p&gt;</comment>
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