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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>[SERVER-50432] In at least one instance (4615603), log index keys as strings instead of deflated JSON</title>
                <link>https://jira.mongodb.org/browse/SERVER-50432</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Downstream consumers of structured logs could have problems persisting/rendering &lt;a href=&quot;https://github.com/mongodb/mongo/blob/045e804b3d95082ee54de055e38d142ee8b56953/src/mongo/db/exec/working_set_common.cpp#L99-L114&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;log line 4615603&lt;/a&gt;, and potentially others.&lt;/p&gt;

&lt;p&gt;The convention of logging index keys as Extended JSON with deflated key names (e.g., { &quot;&quot;: &quot;valueA&quot;, &quot;&quot;: &quot;valueB&quot; } in index {a:1, b:1}) will probably lead many consumers to receive a single-field document with only the last value (e.g., { &quot;&quot;: &quot;valueB&quot; }) unless they introduce special handling.&lt;/p&gt;

&lt;p&gt;To be clear, we do log the index key correctly. It is just in a convention that many clients will readily mangle.&lt;/p&gt;

&lt;p&gt;At a minimum, can log line 4615603 log &lt;tt&gt;attr.indexKeyData.key&lt;/tt&gt; as a string instead of Extended JSON? There may be a more generic solution that fixes all log lines impacted, but it is yet unclear how many log lines are impacted.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1448183">SERVER-50432</key>
            <summary>In at least one instance (4615603), log index keys as strings instead of deflated JSON</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="eric.cox@mongodb.com">Eric Cox</assignee>
                                    <reporter username="eric.sedor@mongodb.com">Eric Sedor</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Thu, 20 Aug 2020 21:13:35 +0000</created>
                <updated>Sun, 29 Oct 2023 22:04:12 +0000</updated>
                            <resolved>Fri, 25 Sep 2020 15:57:56 +0000</resolved>
                                    <version>4.4.0</version>
                                    <fixVersion>4.8.0</fixVersion>
                                    <component>Logging</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3411853" author="xgen-internal-githook" created="Fri, 25 Sep 2020 15:41:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Eric Cox&apos;, &apos;email&apos;: &apos;eric.cox@mongodb.com&apos;, &apos;username&apos;: &apos;ericox&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-50432&quot; title=&quot;In at least one instance (4615603), log index keys as strings instead of deflated JSON&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-50432&quot;&gt;&lt;del&gt;SERVER-50432&lt;/del&gt;&lt;/a&gt;: In at least one instance (4615603) log index keys as strings instead of deflated JSON&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8a1c501997224714ecb17a93895940ff228a41fd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8a1c501997224714ecb17a93895940ff228a41fd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3352013" author="bruce.lucas@10gen.com" created="Fri, 21 Aug 2020 12:38:34 +0000"  >&lt;p&gt;The JSON spec says that field names &quot;SHOULD&quot; be unique, meaning that it&apos;s recommended because of undesirable consequences, but not mandatory. As Eric indicates many tools that log consumers will want to used to process logs will not handle duplicate key names; for example jq:&lt;/p&gt;
&lt;p/&gt;
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&lt;p/&gt;
&lt;p&gt;So it would be good where possible to avoid emitting log lines with duplicate keys.&lt;/p&gt;</comment>
                    </comments>
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                                            <outwardlinks description="related to">
                                                        </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="1557466">SERVER-53187</issuekey>
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