<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 07:49:07 UTC 2024

It is possible to restrict the fields that are returned in this document by specifying the 'field' parameter in your request.
For example, to request only the issue key and summary append 'field=key&field=summary' to the URL of your request.
-->
<rss version="0.92" >
<channel>
    <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>
    </build-info>


<item>
            <title>[DOCS-4894] Pre-Aggregated Reports use case doc needs changing to reflect WiredTiger use</title>
                <link>https://jira.mongodb.org/browse/DOCS-4894</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The &quot;Pre-Aggregated Reports&quot; use case doc page &lt;a href=&quot;http://docs.mongodb.org/ecosystem/use-cases/pre-aggregated-reports/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/ecosystem/use-cases/pre-aggregated-reports/&lt;/a&gt; is one of the most important use case pages for MongoDB, and is used and reference by many customers/users, especially w.r.t. to time-series type usage patterns, often found in Financial Services and IoT.&lt;/p&gt;

&lt;p&gt;With the introduction of WiredTiger in MongoDB version 3.0, some of the advice in this page may no longer be applicable and may need to be marked as applying to MMAPv1 use only.&lt;/p&gt;

&lt;p&gt;The page defines 4 key patterns:&lt;br/&gt;
1. Pre-aggregation (update averages/mins/maxs for each consumed event rather than recording raw event).&lt;br/&gt;
2. Bucketing (grouping sets of records together, eg. by day, for fast subsequent access - the pattern to deal with consuming lots of fine grained events and then servicing analytics/reports that want to retrieve coarse grained data).&lt;br/&gt;
3. Pre-allocation (aka. pre-padding, to avoid excessive document growth and re-allocation)&lt;br/&gt;
4. Intra-document-hierarchy (to prevent event ingestion latencies from increasing as the time of each day increases)&lt;/p&gt;

&lt;p&gt;Note: These patterns are also documented in chapter 4 of the book &quot;MongoDB Applied Design Patterns&quot; by Rick Copeland (O&apos;Reilly)&lt;/p&gt;

&lt;p&gt;With the introduction of WiredTiger, it is likely that pattern 3 (Pre-allocation) is no longer required and perhaps would even be detrimental, due to the way WiredTiger deals with &quot;in-place updates&quot; internally. Also it could be that pattern 4 (intra-document hierarchy) also adds no value when using WiredTiger (this needs to be validated by someone).&lt;/p&gt;

&lt;p&gt;Please update the doc page to indicate which of the 4 patterns should not be applied, when running WiredTiger rather than MMAPv1.&lt;/p&gt;</description>
                <environment></environment>
        <key id="187085">DOCS-4894</key>
            <summary>Pre-Aggregated Reports use case doc needs changing to reflect WiredTiger use</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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="paul.done@mongodb.com">Paul Done</reporter>
                        <labels>
                            <label>aggregation</label>
                            <label>storage</label>
                    </labels>
                <created>Tue, 3 Mar 2015 10:15:26 +0000</created>
                <updated>Sun, 29 Oct 2017 12:38:53 +0000</updated>
                            <resolved>Tue, 4 Oct 2016 17:54:16 +0000</resolved>
                                                    <fixVersion>mongodb-3.0</fixVersion>
                                    <component>ecosystem</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1399737" author="xgen-internal-githook" created="Tue, 4 Oct 2016 14:49:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kay-kim&apos;, u&apos;name&apos;: u&apos;kay&apos;, u&apos;email&apos;: u&apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4894&quot; title=&quot;Pre-Aggregated Reports use case doc needs changing to reflect WiredTiger use&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4894&quot;&gt;&lt;del&gt;DOCS-4894&lt;/del&gt;&lt;/a&gt; rename filename so url reflects mmapv1 as well&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs-ecosystem/commit/76d260cc53182ac7ac46228d78c8e3a993b2b3bc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs-ecosystem/commit/76d260cc53182ac7ac46228d78c8e3a993b2b3bc&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1399731" author="xgen-internal-githook" created="Tue, 4 Oct 2016 14:41:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kay-kim&apos;, u&apos;name&apos;: u&apos;kay&apos;, u&apos;email&apos;: u&apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4894&quot; title=&quot;Pre-Aggregated Reports use case doc needs changing to reflect WiredTiger use&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4894&quot;&gt;&lt;del&gt;DOCS-4894&lt;/del&gt;&lt;/a&gt; updat title and add admonition for MMAPv1 only&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs-ecosystem/commit/d27236463908e23281f6ac6f5a0258353c1a42db&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs-ecosystem/commit/d27236463908e23281f6ac6f5a0258353c1a42db&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1399718" author="kay.kim@10gen.com" created="Tue, 4 Oct 2016 14:30:50 +0000"  >&lt;p&gt;Will annotate as MMAPv1 only and update title to reflect MMAPv1 as well.&lt;/p&gt;</comment>
                            <comment id="1338574" author="emily.hall" created="Wed, 27 Jul 2016 19:33:44 +0000"  >&lt;p&gt;Closed for housekeeping on 7/27/2016 by Emily Hall. &lt;br/&gt;
If you require additional support, please open a new ticket for prioritization. &lt;br/&gt;
Thanks,&lt;br/&gt;
Emily&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="268946">DOCS-7310</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="78180">DOCS-1582</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="156093">DOCS-3983</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>4.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Tue, 3 Mar 2015 17:19:01 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        7 years, 19 weeks, 1 day ago
    
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18254" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Dependencies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue><![CDATA[]]></customfieldvalue>


                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_15850" key="com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary">
                        <customfieldname>Development</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                            <customfield id="customfield_10857" key="com.pyxis.greenhopper.jira:gh-epic-link">
                        <customfieldname>Epic Link</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>DOCS-7098</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10057" key="com.atlassian.jira.toolkit:lastusercommented">
                        <customfieldname>Last comment by Customer</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>true</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10056" key="com.atlassian.jira.toolkit:lastupdaterorcommenter">
                        <customfieldname>Last commenter</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>jess.mokrzecki@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            7 years, 19 weeks, 1 day ago
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                            <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>emily.hall</customfieldvalue>
            <customfieldvalue>xgen-internal-githook</customfieldvalue>
            <customfieldvalue>kay.kim@mongodb.com</customfieldvalue>
            <customfieldvalue>paul.done@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hrqinr:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hsi2t3:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10558" key="com.pyxis.greenhopper.jira:gh-global-rank">
                        <customfieldname>Rank (Obsolete)</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>164812</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_10557" key="com.pyxis.greenhopper.jira:gh-sprint">
                        <customfieldname>Sprint</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue id="667">Docs Sprint 2016 (01.25-02.12)</customfieldvalue>
    <customfieldvalue id="1286">Docs Q3 W9 (10/4)</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                        <customfield id="customfield_10555" key="com.atlassian.jira.plugin.system.customfieldtypes:float">
                        <customfieldname>Story Points</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>0.25</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_10053" key="com.atlassian.jira.ext.charting:timeinstatus">
                        <customfieldname>Time In Status</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_14350" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>serverRank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hrz1cv:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                </customfields>
    </item>
</channel>
</rss>