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    <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>[SERVER-81330] Better error message when attempting to create a descending shard key</title>
                <link>https://jira.mongodb.org/browse/SERVER-81330</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Shard key fields must be ascending, with at most one hashed field. Descending fields are not allowed (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-8129&quot; title=&quot;Allow descending fields in the shard key pattern&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-8129&quot;&gt;SERVER-8129&lt;/a&gt;)&lt;/p&gt;

&lt;p&gt;When you attempt to create one with a descending field, the error message is confusing&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;
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						&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;[direct: mongos] test&amp;gt; sh.shardCollection(&quot;test.foo&quot;, {a:-1})&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;   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;MongoServerError: Shard key { a: -1 } can contain at most one &apos;hashed&apos; field, and/or multiple numerical fields set to a value of 1. Failed to parse field a&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;Can we reword this to be something like&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;   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;Shard key XXXX can contain at most one &apos;hashed&apos; field, and/or multiple fields with a value of 1 (ascending). Failed to parse field a&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Or modify the code to have different error blocks for &quot;more than one hashed field&quot; and &quot;invalid field value&quot; to make the error message more tailored.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2448725">SERVER-81330</key>
            <summary>Better error message when attempting to create a descending shard key</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="janna.golden@mongodb.com">Janna Golden</assignee>
                                    <reporter username="joanna.cheng@mongodb.com">Joanna Cheng</reporter>
                        <labels>
                            <label>sharding-nyc-subteam3</label>
                    </labels>
                <created>Fri, 22 Sep 2023 01:11:09 +0000</created>
                <updated>Thu, 2 Nov 2023 16:07:52 +0000</updated>
                            <resolved>Thu, 2 Nov 2023 14:48:02 +0000</resolved>
                                                    <fixVersion>7.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5847705" author="xgen-internal-githook" created="Wed, 1 Nov 2023 21:33:02 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;jannaerin&apos;, &apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-81330&quot; title=&quot;Better error message when attempting to create a descending shard key&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-81330&quot;&gt;&lt;del&gt;SERVER-81330&lt;/del&gt;&lt;/a&gt; Make error message more clear on an attempt to create descending shard key&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6958d7e21b0edca6d7347882424a047ad397f171&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6958d7e21b0edca6d7347882424a047ad397f171&lt;/a&gt;&lt;/p&gt;</comment>
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