<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 05:15:59 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-48051] Temporary namespace collisions in 4.4 mixed version cluster mapReduce tests</title>
                <link>https://jira.mongodb.org/browse/SERVER-48051</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20057&quot; title=&quot;Concurrent, sharded mapReduces can fail when temporary namespaces collide across mongos processes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20057&quot;&gt;&lt;del&gt;SERVER-20057&lt;/del&gt;&lt;/a&gt; disabled map reduce testing with more than one mongos because the temporary namespace chosen for concurrent sharded cluster mapReduces on different routers can collide.&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43303&quot; title=&quot;Re introduce mapReduce fsm tests in sharded suites&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43303&quot;&gt;&lt;del&gt;SERVER-43303&lt;/del&gt;&lt;/a&gt; enabled this testing because this problem doesn&apos;t exist for the new mapReduce implementation. If this testing runs in a 4.4 mixed version cluster though, the old protocol is still used because each mongos uses the 4.2 binary, which can lead to failures.&lt;/p&gt;

&lt;p&gt;Either the testing enabled by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43303&quot; title=&quot;Re introduce mapReduce fsm tests in sharded suites&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43303&quot;&gt;&lt;del&gt;SERVER-43303&lt;/del&gt;&lt;/a&gt; should be disabled in mixed version clusters or the way legacy sharded mapReduce generates temporary namespaces should be fixed, possibly by using a UUID as the namespace suffix instead of &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ffdfdb88ba4e7e42f075674345bdf14f454f8e7c/src/mongo/s/commands/cluster_map_reduce_cmd.cpp#L71-L77&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a concatenation of&#160;the current time and an atomic counter&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1344805">SERVER-48051</key>
            <summary>Temporary namespace collisions in 4.4 mixed version cluster mapReduce tests</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="charlie.swanson@mongodb.com">Charlie Swanson</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                            <label>qopt-team</label>
                    </labels>
                <created>Fri, 8 May 2020 17:43:16 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:29 +0000</updated>
                            <resolved>Wed, 20 May 2020 20:48:41 +0000</resolved>
                                                    <fixVersion>4.4.0-rc7</fixVersion>
                                    <component>MapReduce</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3098276" author="xgen-internal-githook" created="Wed, 20 May 2020 20:43:54 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Charlie Swanson&apos;, &apos;email&apos;: &apos;charlie.swanson@mongodb.com&apos;, &apos;username&apos;: &apos;cswanson310&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48051&quot; title=&quot;Temporary namespace collisions in 4.4 mixed version cluster mapReduce tests&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48051&quot;&gt;&lt;del&gt;SERVER-48051&lt;/del&gt;&lt;/a&gt; Avoid known namespace conflict on concurrent mapReduces&lt;/p&gt;

&lt;p&gt;We know that the implementation of mapReduce on a 4.2 mongos will choose&lt;br/&gt;
a namespace for mapReduce results to be sent to temporarily, and the&lt;br/&gt;
name is not unique enough. This patch blacklists mixed-version testing&lt;br/&gt;
of mapReduce in the concurrency suite.&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b2b65781fd8695292d737355c583c5d83774d8a1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b2b65781fd8695292d737355c583c5d83774d8a1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3076264" author="jack.mulrow" created="Fri, 8 May 2020 17:46:03 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43303&quot; title=&quot;Re introduce mapReduce fsm tests in sharded suites&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43303&quot;&gt;&lt;del&gt;SERVER-43303&lt;/del&gt;&lt;/a&gt; was completed by the query team, so assigning this ticket to their backlog user.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                                        </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_10011" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Backwards Compatibility</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10038"><![CDATA[Fully Compatible]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                            <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Tue, 19 May 2020 18:58:51 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        3 years, 38 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_17050" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Downstream Team Attention</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="16941"><![CDATA[Not Needed]]></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>luke.bonanomi@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            3 years, 38 weeks ago
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_16465" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Linked BF Score</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>27.0</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>charlie.swanson@mongodb.com</customfieldvalue>
            <customfieldvalue>xgen-internal-githook</customfieldvalue>
            <customfieldvalue>jack.mulrow@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hxkczj:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hr5hn3:</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|hxjz8v:</customfieldvalue>

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