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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-31990] Rollback can abort on long collection names.</title>
                <link>https://jira.mongodb.org/browse/SERVER-31990</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Here&apos;s a sequence of operations that seems to cause rollback to abort:&lt;br/&gt;
1. Create a collection with a long name; (long = 64 or so characters)&lt;br/&gt;
2. Rename it to one with a shorter name;&lt;br/&gt;
3. Create an index with a long name.&lt;/p&gt;

&lt;p&gt;Rollback seems to do the rename without dropping indexes, causing the rename back to the long name to fail when the index is present.&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;   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;2017-11-15T19:53:32.521+0000 I ROLLBACK [rsBackgroundSync] Attempting to rename collection with UUID: ec2f6bdc-d71b-410c-a294-62556ad94185, from: db_1.system.drop.1510775596i24t10.two, to: db_1.verylongnamespaceverylongnamespaceverylongnamespaceverylongnamespaceverylongnamespaceverylongnamespaceverylongnam&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2017-11-15T19:53:32.521+0000 F ROLLBACK [rsBackgroundSync] Unable to roll back renameCollection command: InvalidLength: collection name length of 118 exceeds maximum length of 116, allowing for index names&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2017-11-15T19:53:32.521+0000 I ROLLBACK [rsBackgroundSync] Rollback finished. The final minValid is: { ts: Timestamp 1510775610000|106, t: 11 }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2017-11-15T19:53:32.522+0000 F ROLLBACK [rsBackgroundSync] Unable to complete rollback. A full resync may be needed: UnrecoverableRollbackError: Unable to rollback renameCollection command&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2017-11-15T19:53:32.522+0000 F -        [rsBackgroundSync] Fatal Assertion 40507 at src/mongo/db/repl/rs_rollback.cpp 1475&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   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;2017-11-15T19:53:32.522+0000 F -        [rsBackgroundSync]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&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-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;***aborting after fassert() failure&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="459491">SERVER-31990</key>
            <summary>Rollback can abort on long collection names.</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="judah.schvimer@mongodb.com">Judah Schvimer</assignee>
                                    <reporter username="robert.guo@mongodb.com">Robert Guo</reporter>
                        <labels>
                            <label>rbfz</label>
                    </labels>
                <created>Wed, 15 Nov 2017 22:44:20 +0000</created>
                <updated>Mon, 30 Oct 2023 23:10:29 +0000</updated>
                            <resolved>Wed, 29 Nov 2017 17:11:40 +0000</resolved>
                                    <version>3.6.0-rc4</version>
                                    <fixVersion>3.6.1</fixVersion>
                    <fixVersion>3.7.1</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1743306" author="xgen-internal-githook" created="Tue, 5 Dec 2017 18:43:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;judahschvimer&apos;, &apos;email&apos;: &apos;judah@mongodb.com&apos;, &apos;name&apos;: &apos;Judah Schvimer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31990&quot; title=&quot;Rollback can abort on long collection names.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31990&quot;&gt;&lt;del&gt;SERVER-31990&lt;/del&gt;&lt;/a&gt; drop indexes before renaming collections in rollback via refetch&lt;/p&gt;

&lt;p&gt;(cherry picked from commit d923a5575bf277bfc49073597ca0c4d156b93492)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/18851f31bbee892d558680536894968efa72feb7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/18851f31bbee892d558680536894968efa72feb7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1737511" author="xgen-internal-githook" created="Wed, 29 Nov 2017 17:10:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Judah Schvimer&apos;, &apos;username&apos;: &apos;judahschvimer&apos;, &apos;email&apos;: &apos;judah@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31990&quot; title=&quot;Rollback can abort on long collection names.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31990&quot;&gt;&lt;del&gt;SERVER-31990&lt;/del&gt;&lt;/a&gt; drop indexes before renaming collections in rollback via refetch&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d923a5575bf277bfc49073597ca0c4d156b93492&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d923a5575bf277bfc49073597ca0c4d156b93492&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1727150" author="robert.guo" created="Wed, 15 Nov 2017 23:55:42 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=Spencer&quot; class=&quot;user-hover&quot; rel=&quot;Spencer&quot;&gt;Spencer&lt;/a&gt; This is indeed on WT, but we check the NS length as part of the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/afc2467c150c75dc201daacb9ac4e1f76e6fea6f/src/mongo/db/catalog/rename_collection.cpp#L126&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;renameCollection command&lt;/a&gt;, independent of the storage engine.&lt;/p&gt;</comment>
                            <comment id="1727098" author="spencer" created="Wed, 15 Nov 2017 22:56:52 +0000"  >&lt;p&gt;Is this on wiredTiger?  My understanding was that WT doesn&apos;t have a character limit on collection or index names?&lt;/p&gt;</comment>
                            <comment id="1727087" author="judah.schvimer" created="Wed, 15 Nov 2017 22:48:12 +0000"  >&lt;p&gt;If we hadn&apos;t fasserted we would have dropped the index shortly after. It should be safe to drop indexes by UUID first during rollback to fix this.&lt;/p&gt;</comment>
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