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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>
    </build-info>


<item>
            <title>[COMPASS-6362] Investigate changes in SERVER-70267: Streaming group when id is on time</title>
                <link>https://jira.mongodb.org/browse/COMPASS-6362</link>
                <project id="13182" key="COMPASS">Compass </project>
                    <description>    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Original Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;    In some cases for timeseries (example below) optimizer may replace $group with $_internalStreamingGroup stage.&lt;/p&gt;

&lt;p&gt;In addition to all $group fields, it will also contain $monotonicIdFields field  that lists all _id fields that are considered monotonic by the optimizer. If _id is a single expression, it will just contain a single element &#8220;_id&#8221;. &lt;/p&gt;

&lt;p&gt;Example of explain output with the new stage&lt;br/&gt;
{&lt;br/&gt;
        &quot;explainVersion&quot; : &quot;1&quot;,&lt;br/&gt;
        &quot;stages&quot; : [&lt;br/&gt;
                {&lt;br/&gt;
                        &quot;$cursor&quot; : {&lt;br/&gt;
                                &quot;queryPlanner&quot; : {&lt;br/&gt;
                                        &quot;namespace&quot; : &quot;timeseries.system.buckets.Collection0&quot;,&lt;br/&gt;
                                        &quot;indexFilterSet&quot; : false,&lt;br/&gt;
                                        &quot;parsedQuery&quot; : {&lt;/p&gt;

&lt;p&gt;                                        },&lt;br/&gt;
                                        &quot;queryHash&quot; : &quot;17830885&quot;,&lt;br/&gt;
                                        &quot;planCacheKey&quot; : &quot;17830885&quot;,&lt;br/&gt;
                                        &quot;maxIndexedOrSolutionsReached&quot; : false,&lt;br/&gt;
                                        &quot;maxIndexedAndSolutionsReached&quot; : false,&lt;br/&gt;
                                        &quot;maxScansToExplodeReached&quot; : false,&lt;br/&gt;
                                        &quot;winningPlan&quot; : &lt;/p&gt;
{
                                                &quot;stage&quot; : &quot;COLLSCAN&quot;,
                                                &quot;direction&quot; : &quot;forward&quot;
                                        }
&lt;p&gt;,&lt;br/&gt;
                                        &quot;rejectedPlans&quot; : [ ]&lt;br/&gt;
                                }&lt;br/&gt;
                        }&lt;br/&gt;
                },&lt;br/&gt;
                {&lt;br/&gt;
                        &quot;$_internalUnpackBucket&quot; : &lt;/p&gt;
{
                                &quot;include&quot; : [
                                        &quot;price&quot;,
                                        &quot;time&quot;,
                                        &quot;symbol&quot;
                                ],
                                &quot;timeField&quot; : &quot;time&quot;,
                                &quot;metaField&quot; : &quot;symbol&quot;,
                                &quot;bucketMaxSpanSeconds&quot; : 3600,
                                &quot;assumeNoMixedSchemaData&quot; : true,
                                &quot;includeMinTimeAsMetadata&quot; : true

                &quot;internalQueryFacetBufferSizeBytes&quot; : 104857600,
                &quot;internalQueryFacetMaxOutputDocSizeBytes&quot; : 104857600,
                &quot;internalLookupStageIntermediateDocumentMaxSizeBytes&quot; : 104857600,
                &quot;internalDocumentSourceGroupMaxMemoryBytes&quot; : 104857600,
                &quot;internalQueryMaxBlockingSortMemoryUsageBytes&quot; : 104857600,
                &quot;internalQueryProhibitBlockingMergeOnMongoS&quot; : 0,
                &quot;internalQueryMaxAddToSetBytes&quot; : 104857600,
                &quot;internalDocumentSourceSetWindowFieldsMaxMemoryBytes&quot; : 104857600,
                &quot;internalQueryFrameworkControl&quot; : &quot;tryBonsai&quot;
        }
&lt;p&gt;,&lt;br/&gt;
        &quot;command&quot; : {&lt;br/&gt;
                &quot;aggregate&quot; : &quot;system.buckets.Collection0&quot;,&lt;br/&gt;
                &quot;pipeline&quot; : [&lt;br/&gt;
                        {&lt;br/&gt;
                                &quot;$_internalUnpackBucket&quot; : &lt;/p&gt;
{
                                        &quot;timeField&quot; : &quot;time&quot;,
                                        &quot;metaField&quot; : &quot;symbol&quot;,
                                        &quot;bucketMaxSpanSeconds&quot; : 3600,
                                        &quot;assumeNoMixedSchemaData&quot; : true,
                                &quot;includeMinTimeAsMetadata&quot; : true                                                                                                 [75/5353]
                        }
&lt;p&gt;                },&lt;br/&gt;
                {&lt;br/&gt;
                        &quot;$_internalBoundedSort&quot; : {&lt;br/&gt;
                                &quot;sortKey&quot; : &lt;/p&gt;
{
                                        &quot;time&quot; : 1
                                }
&lt;p&gt;,&lt;br/&gt;
                                &quot;bound&quot; : &lt;/p&gt;
{
                                        &quot;base&quot; : &quot;min&quot;,
                                        &quot;offsetSeconds&quot; : NumberLong(0)
                                }
&lt;p&gt;,&lt;br/&gt;
                                &quot;limit&quot; : NumberLong(0)&lt;br/&gt;
                        }&lt;br/&gt;
                },&lt;br/&gt;
                {&lt;br/&gt;
                        &quot;$_internalStreamingGroup&quot; : {&lt;br/&gt;
                                &quot;_id&quot; : {&lt;br/&gt;
                                        &quot;symbol&quot; : &quot;$symbol&quot;,&lt;br/&gt;
                                        &quot;time&quot; : {&lt;br/&gt;
                                                &quot;$dateTrunc&quot; : {&lt;br/&gt;
                                                        &quot;date&quot; : &quot;$time&quot;,&lt;br/&gt;
                                                        &quot;unit&quot; : &lt;/p&gt;
{
                                                                &quot;$const&quot; : &quot;minute&quot;
                                                        }
&lt;p&gt;,&lt;br/&gt;
                                                        &quot;binSize&quot; : &lt;/p&gt;
{
                                                                &quot;$const&quot; : 61
                                                        }
&lt;p&gt;                                                }&lt;br/&gt;
                                        }&lt;br/&gt;
                                },&lt;br/&gt;
                                &quot;high&quot; : &lt;/p&gt;
{
                                        &quot;$max&quot; : &quot;$price&quot;
                                }
&lt;p&gt;,&lt;br/&gt;
                                &quot;low&quot; : &lt;/p&gt;
{
                                        &quot;$min&quot; : &quot;$price&quot;
                                }
&lt;p&gt;,&lt;br/&gt;
                                &quot;open&quot; : &lt;/p&gt;
{
                                        &quot;$first&quot; : &quot;$price&quot;
                                }
&lt;p&gt;,&lt;br/&gt;
                                &quot;close&quot; : &lt;/p&gt;
{
                                        &quot;$last&quot; : &quot;$price&quot;
                                }
&lt;p&gt;,&lt;br/&gt;
                                &quot;$monotonicIdFields&quot; : [&lt;br/&gt;
                                        &quot;time&quot;&lt;br/&gt;
                                ]&lt;br/&gt;
                        }&lt;br/&gt;
                }&lt;br/&gt;
        ],&lt;br/&gt;
        &quot;serverInfo&quot; : &lt;/p&gt;
{
                &quot;host&quot; : &quot;ip-10-122-10-70&quot;,
                &quot;port&quot; : 27017,
                &quot;version&quot; : &quot;6.3.0-alpha-261-geac3840&quot;,
                &quot;gitVersion&quot; : &quot;eac384080001c4ba2dbbb72cb79550deb215a79a&quot;
        }
&lt;p&gt;,&lt;br/&gt;
        &quot;serverParameters&quot; : &lt;/p&gt;
{
                &quot;internalQueryFacetBufferSizeBytes&quot; : 104857600,
                &quot;internalQueryFacetMaxOutputDocSizeBytes&quot; : 104857600,
                &quot;internalLookupStageIntermediateDocumentMaxSizeBytes&quot; : 104857600,
                &quot;internalDocumentSourceGroupMaxMemoryBytes&quot; : 104857600,
                &quot;internalQueryMaxBlockingSortMemoryUsageBytes&quot; : 104857600,
                &quot;internalQueryProhibitBlockingMergeOnMongoS&quot; : 0,
                &quot;internalQueryMaxAddToSetBytes&quot; : 104857600,
                &quot;internalDocumentSourceSetWindowFieldsMaxMemoryBytes&quot; : 104857600,
                &quot;internalQueryFrameworkControl&quot; : &quot;tryBonsai&quot;
        }
&lt;p&gt;,&lt;br/&gt;
        &quot;command&quot; : {&lt;br/&gt;
                &quot;aggregate&quot; : &quot;system.buckets.Collection0&quot;,&lt;br/&gt;
                &quot;pipeline&quot; : [&lt;br/&gt;
                        {&lt;br/&gt;
                                &quot;$_internalUnpackBucket&quot; : &lt;/p&gt;
{
                                        &quot;timeField&quot; : &quot;time&quot;,
                                        &quot;metaField&quot; : &quot;symbol&quot;,
                                        &quot;bucketMaxSpanSeconds&quot; : 3600,
                                        &quot;assumeNoMixedSchemaData&quot; : true,
                                        &quot;usesExtendedRange&quot; : false
                                }
&lt;p&gt;                        },&lt;br/&gt;
                        {&lt;br/&gt;
                                &quot;$sort&quot; : &lt;/p&gt;
{
                                        &quot;time&quot; : 1
                                }
&lt;p&gt;                        },&lt;br/&gt;
                        {&lt;br/&gt;
                                &quot;$group&quot; : {&lt;br/&gt;
                                        &quot;_id&quot; : {&lt;br/&gt;
                                                &quot;symbol&quot; : &quot;$symbol&quot;,&lt;br/&gt;
                                                &quot;time&quot; : {&lt;br/&gt;
                                                        &quot;$dateTrunc&quot; : &lt;/p&gt;
{
                                                                &quot;date&quot; : &quot;$time&quot;,
                                                                &quot;unit&quot; : &quot;minute&quot;,
                                                                &quot;binSize&quot; : 61
                                                        }
&lt;p&gt;                                                }&lt;br/&gt;
                                        },&lt;br/&gt;
                                        &quot;high&quot; : &lt;/p&gt;
{
                                                &quot;$max&quot; : &quot;$price&quot;
                                        }
&lt;p&gt;,&lt;br/&gt;
                                        &quot;low&quot; : &lt;/p&gt;
{
                                                &quot;$min&quot; : &quot;$price&quot;
                                        }
&lt;p&gt;,&lt;br/&gt;
                                        &quot;open&quot; : &lt;/p&gt;
{
                                                &quot;$first&quot; : &quot;$price&quot;
                                        }
&lt;p&gt;,&lt;br/&gt;
                                        &quot;close&quot; : &lt;/p&gt;
{
                                                &quot;$last&quot; : &quot;$price&quot;
                                        }
&lt;p&gt;                                }&lt;br/&gt;
                        }&lt;br/&gt;
                ],&lt;br/&gt;
                &quot;cursor&quot; : {&lt;/p&gt;

&lt;p&gt;                },&lt;br/&gt;
                &quot;collation&quot; : &lt;/p&gt;
{
                        &quot;locale&quot; : &quot;simple&quot;
                }
&lt;p&gt;        },&lt;br/&gt;
        &quot;ok&quot; : 1&lt;br/&gt;
}&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    null&lt;/p&gt;
</description>
                <environment></environment>
        <key id="2207070">COMPASS-6362</key>
            <summary>Investigate changes in SERVER-70267: Streaming group when id is on time</summary>
                <type id="10501" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Investigation</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="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                    </labels>
                <created>Fri, 9 Dec 2022 12:01:04 +0000</created>
                <updated>Wed, 7 Jun 2023 01:45:34 +0000</updated>
                            <resolved>Fri, 9 Dec 2022 15:59:32 +0000</resolved>
                                                    <fixVersion>No version</fixVersion>
                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5479914" author="dbeng-pm-bot" created="Wed, 7 Jun 2023 01:45:34 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70267&quot; title=&quot;Streaming group when id is on time&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70267&quot;&gt;&lt;del&gt;SERVER-70267&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
6.3.0-rc0, 6.0.7&lt;/p&gt;</comment>
                            <comment id="5044043" author="alena.khineika" created="Fri, 9 Dec 2022 15:59:32 +0000"  >&lt;p&gt;Does not impact the DevTools products.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="2153157">SERVER-70267</issuekey>
        </issuelink>
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                                                        </issuelinktype>
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