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    <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>[SERVER-12834] Create flag to allow mongod to ignore &quot;index too long&quot; errors</title>
                <link>https://jira.mongodb.org/browse/SERVER-12834</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5290&quot; title=&quot;fail to insert docs with fields too long to index, and fail to create indexes where doc keys are too big&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-5290&quot;&gt;&lt;del&gt;SERVER-5290&lt;/del&gt;&lt;/a&gt;, mongod correctly returns an error when trying to index a key over the maximum allowed length.   There are plenty of workarounds for new applications (hash the value, truncate the value), but for existing applications with millions of documents, this causes major issues.&lt;/p&gt;

&lt;p&gt;Allowing users to relax this restriction will permit them to gradually deal with these bad index entries.  They can use the upgradeCheck tool (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-8391&quot; title=&quot;Pre-flight upgrade tool to check for changes breaking backwards compatibility or introducing regressions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-8391&quot;&gt;&lt;del&gt;SERVER-8391&lt;/del&gt;&lt;/a&gt;) provided in 2.6 to get an idea if this is something they need or not.&lt;/p&gt;

&lt;p&gt;To enable this flag starting in 2.6.0, start mongod with &lt;tt&gt;--setParameter failIndexKeyTooLong=0&lt;/tt&gt;.  It defaults to true.&lt;/p&gt;</description>
                <environment></environment>
        <key id="112993">SERVER-12834</key>
            <summary>Create flag to allow mongod to ignore &quot;index too long&quot; errors</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="eliot">Eliot Horowitz</assignee>
                                    <reporter username="dan@mongodb.com">Daniel Pasette</reporter>
                        <labels>
                    </labels>
                <created>Fri, 21 Feb 2014 20:59:19 +0000</created>
                <updated>Tue, 18 Jul 2017 00:35:10 +0000</updated>
                            <resolved>Mon, 24 Feb 2014 06:46:40 +0000</resolved>
                                    <version>2.5.4</version>
                                    <fixVersion>2.6.0-rc1</fixVersion>
                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="503931" author="xgen-internal-githook" created="Mon, 24 Feb 2014 06:46:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12834&quot; title=&quot;Create flag to allow mongod to ignore &amp;quot;index too long&amp;quot; errors&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12834&quot;&gt;&lt;del&gt;SERVER-12834&lt;/del&gt;&lt;/a&gt;: failIndexKeyTooLong option to ignore &quot;index too long&quot; errors&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/64d61703a6ef9986608861cd5614ae2c0bf05cf4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/64d61703a6ef9986608861cd5614ae2c0bf05cf4&lt;/a&gt;&lt;/p&gt;</comment>
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                                        <issuelink>
            <issuekey id="114638">DOCS-2795</issuekey>
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            <issuekey id="404827">SERVER-30188</issuekey>
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            <issuekey id="116154">SERVER-12982</issuekey>
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            <issuelink>
            <issuekey id="128213">SERVER-13404</issuekey>
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                                        <issuelink>
            <issuekey id="19114">SERVER-3372</issuekey>
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            <issuekey id="32794">SERVER-5290</issuekey>
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