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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>
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<item>
            <title>[DOCS-11906] Docs for SERVER-32959: Remove index name length limit</title>
                <link>https://jira.mongodb.org/browse/DOCS-11906</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;----------------------------&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;OriginalDescription&quot;&gt;&lt;/a&gt;Original Description&lt;/h2&gt;

&lt;blockquote&gt;
&lt;h3&gt;&lt;a name=&quot;Description%3A&quot;&gt;&lt;/a&gt;Description: &lt;/h3&gt;

&lt;p&gt;Remove documentation on any index name limit mention.&lt;/p&gt;

&lt;h3&gt;&lt;a name=&quot;EngineeringTicketDescription%3A&quot;&gt;&lt;/a&gt;Engineering Ticket Description:&lt;/h3&gt;

&lt;p&gt;As described in &lt;a href=&quot;https://docs.mongodb.com/v3.4/reference/limits/#indexes&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/v3.4/reference/limits/#indexes&lt;/a&gt;, mongod inforces a limits of 128 characters for the &lt;b&gt;combination&lt;/b&gt; of index_name and database_name when creating indexes.  (Similar restrictions apply to collection names for the creation of collections.)&lt;/p&gt;

&lt;p&gt;This can cause errors when unloading / reloading data (e.g., with mongodump and mongorestore) to create test environments in which the database names may differ from the original source.&lt;/p&gt;

&lt;p&gt;For example, when unloading data/indexes from a production database named &lt;tt&gt;abc&lt;/tt&gt; and loading into a database named &lt;tt&gt;abc-uat-2018jan29&lt;/tt&gt; for testing purposes, index names that had been legal in the source database may no longer be legal in the destination database.&lt;/p&gt;

&lt;p&gt;Although this can be resolved by renaming indexes, doing so violates testing protocols, as hinted queries will no longer function equivalently (without change)  in both environments.&lt;/p&gt;

&lt;p&gt;To overcome this, it would be helpful if separate and independent limits were enforced on database names and on index / collection names;  this would ensure that any collection or indexe that can be successfully created in one database can be exported and imported into any other database.&lt;/p&gt;&lt;/blockquote&gt;
&lt;p&gt;----------------------------&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges%28filesthatneedworkandhowmuch%29&quot;&gt;&lt;/a&gt;Scope of changes (files that need work and how much)&lt;/h2&gt;

&lt;p&gt;*&lt;b&gt;only if fcv = 4.2&lt;/b&gt;*&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Update limits and modify references&lt;/li&gt;
	&lt;li&gt;4.2 release notes and compatibility (fcv section)&lt;/li&gt;
	&lt;li&gt;4.2 downgrade prereq&lt;/li&gt;
&lt;/ul&gt;


&lt;h2&gt;&lt;a name=&quot;Impacttootherdocsoutsideofthisproduct&quot;&gt;&lt;/a&gt;Impact to other docs outside of this product&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28workanddate%3F%29&quot;&gt;&lt;/a&gt;MVP (work and date?)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28e.g.ScopeDocs%2CInvision%29&quot;&gt;&lt;/a&gt;Resources (e.g. Scope Docs, Invision)&lt;/h2&gt;</description>
                <environment></environment>
        <key id="575070">DOCS-11906</key>
            <summary>Docs for SERVER-32959: Remove index name length limit</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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="kay.kim@mongodb.com">Kay Kim</reporter>
                        <labels>
                    </labels>
                <created>Mon, 23 Jul 2018 16:33:36 +0000</created>
                <updated>Mon, 13 Nov 2023 18:33:41 +0000</updated>
                            <resolved>Thu, 11 Oct 2018 20:59:05 +0000</resolved>
                                                    <fixVersion>4.1.1</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2030679" author="xgen-internal-githook" created="Thu, 11 Oct 2018 20:58:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;kay&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;, &apos;username&apos;: &apos;kay-kim&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-11906&quot; title=&quot;Docs for SERVER-32959: Remove index name length limit&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-11906&quot;&gt;&lt;del&gt;DOCS-11906&lt;/del&gt;&lt;/a&gt;: 4.2 fcv index name limit&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/a84f40e881f8635add0254d966e2207c71ee246a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/a84f40e881f8635add0254d966e2207c71ee246a&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="488813">SERVER-32959</issuekey>
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