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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-75880] Upsert permits _id values containing $-prefixed paths which cannot be inserted using insert command</title>
                <link>https://jira.mongodb.org/browse/SERVER-75880</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is a continuation to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75517&quot; title=&quot;illegal format of `_id` possible via upsert&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75517&quot;&gt;&lt;del&gt;SERVER-75517&lt;/del&gt;&lt;/a&gt; where the changes from &lt;a href=&quot;https://github.com/mongodb/mongo/commit/819f9d1ae3c9d92cd473946d2a872965440be6a2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;819f9d1&lt;/a&gt; made it so the server checks the top&amp;#45;level fields within an &amp;#95;id embedded object do not start with a &apos;$&apos; character. The non top&amp;#45;level fields in the &amp;#95;id embedded object won&apos;t be validated for &apos;$&apos; characters by an update using upsert=true. The upsert behavior diverges from the storage_validation::storageValidIdField() / BSONObj::storageValidEmbedded() behavior called by the insert command via &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0239589385ef353ca1ee2a10036cd8c5c52d8599/src/mongo/db/ops/insert.cpp#L130&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;fixDocumentForInsert()&lt;/a&gt; in which the latter recursive checks that fields in embedded objects and arrays &lt;em&gt;at any level&lt;/em&gt; do not start with a &apos;$&apos; character.&lt;/p&gt;

&lt;p&gt;This difference in behavior between [updates using upsert=true] and inserts would prevent tools like mongosync which perform a logical sync from successfully copying over the documents. Probably the documents should be prevented from being upserted to preserve the pre PM-1856 behavior for the &amp;#95;id field.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2310166">SERVER-75880</key>
            <summary>Upsert permits _id values containing $-prefixed paths which cannot be inserted using insert command</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="13201">Fixed</resolution>
                                        <assignee username="chii.huang@mongodb.com">Chi-I Huang</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>query-director-triage</label>
                    </labels>
                <created>Sat, 8 Apr 2023 18:43:24 +0000</created>
                <updated>Sun, 29 Oct 2023 21:23:20 +0000</updated>
                            <resolved>Tue, 30 May 2023 16:22:23 +0000</resolved>
                                    <version>6.0.0</version>
                    <version>5.0.16</version>
                    <version>6.3.0-rc3</version>
                                    <fixVersion>7.1.0-rc0</fixVersion>
                                    <component>Write Ops</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="5459016" author="xgen-internal-githook" created="Mon, 29 May 2023 22:36:55 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Chi-I Huang&apos;, &apos;email&apos;: &apos;chii.huang@mongodb.com&apos;, &apos;username&apos;: &apos;chiihuang&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75880&quot; title=&quot;Upsert permits _id values containing $-prefixed paths which cannot be inserted using insert command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75880&quot;&gt;&lt;del&gt;SERVER-75880&lt;/del&gt;&lt;/a&gt;: Added isEmbeddedInIdField flag to disallow $-prefixed fields in _id field&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/139c0f6e6f7c7c20e08e1996d38fed3073e5bf94&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/139c0f6e6f7c7c20e08e1996d38fed3073e5bf94&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2360741">SERVER-77858</issuekey>
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            <issuekey id="2353892">SERVER-77590</issuekey>
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