<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 04:59:51 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>[SERVER-42197] Expose a per-query flag to disable agg optimizations</title>
                <link>https://jira.mongodb.org/browse/SERVER-42197</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This would be similar to the failpoint implemented in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35891&quot; title=&quot;Add failpoint to disable aggregation optimizations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35891&quot;&gt;&lt;del&gt;SERVER-35891&lt;/del&gt;&lt;/a&gt;, but would be for consumption by users rather than for internal testing purposes. On any given aggregate command, the application could specify a hint to disable optimization of the aggregate pipeline:&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;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&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;   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;db.collection.aggregate([&amp;lt;pipeline&amp;gt;], {disablePipelineOptimizations: true})&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Internally, this would work like the failpoint from &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35891&quot; title=&quot;Add failpoint to disable aggregation optimizations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35891&quot;&gt;&lt;del&gt;SERVER-35891&lt;/del&gt;&lt;/a&gt; and would convert &lt;tt&gt;Pipeline::optimizePipeline()&lt;/tt&gt; into a no-op. The effect would to be to prevent rewrite optimizations like &lt;tt&gt;$match&lt;/tt&gt; pushdown and &lt;tt&gt;$sort&lt;/tt&gt;-&lt;tt&gt;$limit&lt;/tt&gt; coalescing into a top-k sort. It would serve as an &quot;escape hatch&quot; in the cases where an optimization is actually unhelpful, putting customers into a mode where their pipeline is much closer to procedural code than a logical statement of the query.&lt;/p&gt;</description>
                <environment></environment>
        <key id="855037">SERVER-42197</key>
            <summary>Expose a per-query flag to disable agg optimizations</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="3">Duplicate</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Fri, 12 Jul 2019 12:56:41 +0000</created>
                <updated>Tue, 6 Dec 2022 02:54:08 +0000</updated>
                            <resolved>Wed, 31 Jul 2019 14:48:51 +0000</resolved>
                                                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="2352373" author="craig.homa" created="Wed, 31 Jul 2019 14:48:51 +0000"  >&lt;p&gt;Closing as a duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-38585&quot; title=&quot;Add no-op delimiter stage to aggregation to prevent pipeline optimizations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-38585&quot;&gt;SERVER-38585&lt;/a&gt;. Please follow that issue for updates.&lt;/p&gt;</comment>
                            <comment id="2337368" author="asya" created="Mon, 22 Jul 2019 19:51:47 +0000"  >&lt;p&gt;I would be concerned about a disable that&apos;s pipeline wide, given that there is no way for the user to write some of the optimizations literally into their pipeline.&lt;/p&gt;</comment>
                            <comment id="2322861" author="david.storch" created="Fri, 12 Jul 2019 13:13:28 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=charlie.swanson&quot; class=&quot;user-hover&quot; rel=&quot;charlie.swanson&quot;&gt;charlie.swanson&lt;/a&gt;, oh yeah, forgot about that one. You&apos;re right that this has the same goal as &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-38585&quot; title=&quot;Add no-op delimiter stage to aggregation to prevent pipeline optimizations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-38585&quot;&gt;SERVER-38585&lt;/a&gt;, but they suggest a slightly different solution. Chris suggests the (arguably better) more granular option of placing a &quot;disable optimization&quot; hint in the pipeline itself. This switch would disable optimization for the operation as a whole. It might still make sense to consider them duplicates, though. We can discuss at our triage meeting.&lt;/p&gt;</comment>
                            <comment id="2322857" author="charlie.swanson" created="Fri, 12 Jul 2019 13:09:03 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.storch&quot; class=&quot;user-hover&quot; rel=&quot;david.storch&quot;&gt;david.storch&lt;/a&gt; potential duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-38585&quot; title=&quot;Add no-op delimiter stage to aggregation to prevent pipeline optimizations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-38585&quot;&gt;SERVER-38585&lt;/a&gt;?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="652100">SERVER-38585</issuekey>
        </issuelink>
                            </outwardlinks>
                                                        </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="652100">SERVER-38585</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="565307">SERVER-35891</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_12751" key="com.atlassian.jira.plugin.system.customfieldtypes:multiselect">
                        <customfieldname>Assigned Teams</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="25143"><![CDATA[Query]]></customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Fri, 12 Jul 2019 13:09:03 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        4 years, 28 weeks 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_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>alexander.golin@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            4 years, 28 weeks ago
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                    <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>asya.kamsky@mongodb.com</customfieldvalue>
            <customfieldvalue>backlog-server-query</customfieldvalue>
            <customfieldvalue>charlie.swanson@mongodb.com</customfieldvalue>
            <customfieldvalue>craig.homa@mongodb.com</customfieldvalue>
            <customfieldvalue>david.storch@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hve0lz:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hv33pb:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10558" key="com.pyxis.greenhopper.jira:gh-global-rank">
                        <customfieldname>Rank (Obsolete)</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>9223372036854775807</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_23361" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Requested By</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <customfield id="customfield_10053" key="com.atlassian.jira.ext.charting:timeinstatus">
                        <customfieldname>Time In Status</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_22870" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Triagers</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_14350" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>serverRank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hvdmvb:</customfieldvalue>

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