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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>[SERVER-25040] Initial syncing node maintains tmp collection from map reduce when primary has renamed it</title>
                <link>https://jira.mongodb.org/browse/SERVER-25040</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When running the small_oplog_rs_initsync passthrough we get an error where a temporary collection created in a mapreduce is not renamed on teh secondary even though it is on the primary.&lt;/p&gt;</description>
                <environment></environment>
        <key id="300765">SERVER-25040</key>
            <summary>Initial syncing node maintains tmp collection from map reduce when primary has renamed it</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="siyuan.zhou@mongodb.com">Siyuan Zhou</assignee>
                                    <reporter username="judah.schvimer@mongodb.com">Judah Schvimer</reporter>
                        <labels>
                    </labels>
                <created>Wed, 13 Jul 2016 15:20:31 +0000</created>
                <updated>Mon, 19 Dec 2016 21:51:15 +0000</updated>
                            <resolved>Mon, 19 Dec 2016 21:51:15 +0000</resolved>
                                    <version>3.3.9</version>
                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1461590" author="spencer" created="Mon, 19 Dec 2016 21:51:06 +0000"  >&lt;p&gt;Re-opening to change resolution since no commits happened on this ticket&lt;/p&gt;</comment>
                            <comment id="1354739" author="judah.schvimer" created="Thu, 11 Aug 2016 20:57:49 +0000"  >&lt;p&gt;This appears to be another issue of metadata idempotency.&lt;/p&gt;

&lt;p&gt;Consider &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;{ ts: Timestamp 1468367378000|6, t: 1, h: 1161015165816820222, v: 2, op: &quot;c&quot;, ns: &quot;test.$cmd&quot;, o: { renameCollection: &quot;test.tmp.mr.mr_merge_1&quot;, to: &quot;test.mr_merge_out&quot;, stayTemp: false, dropTarget: false } }&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;

&lt;p&gt;When we call listCollections, it returns test.mr_merge_out so we clone test.mr_merge_out.&lt;br/&gt;
We then get to the applyOps phase.&lt;br/&gt;
First we apply &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;{ ts: Timestamp 1468367378000|1, t: 1, h: -3741401790110643680, v: 2, op: &quot;c&quot;, ns: &quot;test.$cmd&quot;, o: { create: &quot;tmp.mr.mr_merge_1&quot;, temp: true } }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;&lt;br/&gt;
Then eventually we apply &lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{ ts: Timestamp 1468367378000|6, t: 1, h: 1161015165816820222, v: 2, op: &quot;c&quot;, ns: &quot;test.$cmd&quot;, o: { renameCollection: &quot;test.tmp.mr.mr_merge_1&quot;, to: &quot;test.mr_merge_out&quot;, stayTemp: false, dropTarget: false } }&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;br/&gt;
We have dropTarget: false, which means that it will return a &quot;NamespaceExists&quot; error since the target namespace already exists. In oplog.cpp, &quot;NamespaceExists&quot; is an acceptable error for renameCollection, so this renameCollection will fail silently and both collections will exist on the secondary, as we see. &lt;/p&gt;</comment>
                            <comment id="1323108" author="judah.schvimer" created="Wed, 13 Jul 2016 18:56:07 +0000"  >&lt;p&gt;Example is here: &lt;a href=&quot;https://logkeeper.mongodb.org/build/04af62a90a0ca2ec40f91f626bd08c06/all&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://logkeeper.mongodb.org/build/04af62a90a0ca2ec40f91f626bd08c06/all&lt;/a&gt; with tmp.mr.mr_merge_1&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="305043">SERVER-25332</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is depended on by">
                                                        </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="316283">SERVER-26117</issuekey>
        </issuelink>
                            </outwardlinks>
                                                        </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="134533" name="tmpCollection.txt" size="9122025" author="judah.schvimer@mongodb.com" created="Wed, 10 Aug 2016 22:56:51 +0000"/>
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