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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-44539] Re-enable &quot;missing RWC&quot; logging</title>
                <link>https://jira.mongodb.org/browse/SERVER-44539</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After both &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43712&quot; title=&quot;Use RWCDefaults for incoming requests (mongos)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43712&quot;&gt;&lt;del&gt;SERVER-43712&lt;/del&gt;&lt;/a&gt; and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43126&quot; title=&quot;Adjust RC/WC Majority passthrough suites to use RWCDefaults&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43126&quot;&gt;&lt;del&gt;SERVER-43126&lt;/del&gt;&lt;/a&gt; have been completed, re-enable the &quot;missing RWC&quot; logging (on shard/config servers) once we&apos;re sure that they won&apos;t result in logspam (or in a way which avoids that).  This may also require adjusting any jstests that issue commands directly against shard/config servers.&lt;/p&gt;</description>
                <environment></environment>
        <key id="995859">SERVER-44539</key>
            <summary>Re-enable &quot;missing RWC&quot; logging</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="kevin.pulo@mongodb.com">Kevin Pulo</reporter>
                        <labels>
                            <label>PM-900-Fallout</label>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Mon, 11 Nov 2019 05:09:40 +0000</created>
                <updated>Tue, 6 Dec 2022 02:42:44 +0000</updated>
                                                                            <component>Diagnostics</component>
                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2724151" author="kaloian.manassiev" created="Tue, 14 Jan 2020 12:18:46 +0000"  >&lt;p&gt;Also I wanted to add that in the presence of the testing done under &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45098&quot; title=&quot;Test application of RWCDefaults to all commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45098&quot;&gt;&lt;del&gt;SERVER-45098&lt;/del&gt;&lt;/a&gt;, enabling this logging is a little bit less pressing, because at least we have a confirmation that the commands are apply the defaults correctly. This logging was intended to ensure that any new commands we might add won&apos;t forget to add the defaults handling.&lt;/p&gt;</comment>
                            <comment id="2723899" author="kevin.pulo@10gen.com" created="Tue, 14 Jan 2020 09:40:25 +0000"  >&lt;p&gt;Yes, the idea is to re-enable the logging, and then fix up any excessively verbose logging that results.  The expected sources are:&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;User operations that are inadvertently not sending RWC to the shards.  Some of these are in the process of being fixed on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45098&quot; title=&quot;Test application of RWCDefaults to all commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45098&quot;&gt;&lt;del&gt;SERVER-45098&lt;/del&gt;&lt;/a&gt;.  You should also be aware of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45549&quot; title=&quot;RWC defaults aren&amp;#39;t applied to aggregate command on mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45549&quot;&gt;&lt;del&gt;SERVER-45549&lt;/del&gt;&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Internal operations on mongos/shards which don&apos;t specify RWC (like the config.cache.chunks.XXX initialisation you found).  These should have an appropriate RWC explicitly added to them (most likely {w:1} and {level:&quot;local&quot;}).&lt;/li&gt;
	&lt;li&gt;jstests that do operations directly on shards.  This might include ShardingTest setup/initialisation/shutdown.  These should have an appropriate RWC explicitly added to them (almost certainly {w:1} and {level:&quot;local&quot;}).&lt;/li&gt;
&lt;/ol&gt;
</comment>
                            <comment id="2722934" author="jack.mulrow" created="Mon, 13 Jan 2020 20:51:16 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kevin.pulo&quot; class=&quot;user-hover&quot; rel=&quot;kevin.pulo&quot;&gt;kevin.pulo&lt;/a&gt;, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kaloian.manassiev&quot; class=&quot;user-hover&quot; rel=&quot;kaloian.manassiev&quot;&gt;kaloian.manassiev&lt;/a&gt;, I ran an &lt;a href=&quot;https://evergreen.mongodb.com/version/5e1c8bf4d1fe073b38f7408c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;evergreen patch with the logging enabled&lt;/a&gt;, and it looks like we still have a good number of internal operations that don&apos;t specify a read/write concern and trigger the logging (e.g. &lt;a href=&quot;https://github.com/mongodb/mongo/blob/87f20a3aa53d88846a34d299e9b0e7b39531a6e7/src/mongo/db/s/shard_metadata_util.cpp#L340&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;creating an index on a config.cache.chunks.XXX collection&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;Just to confirm before I spend more time on this - was this ticket meant to include finding and fixing up these operations? Thanks!&lt;/p&gt;</comment>
                            <comment id="2574480" author="kaloian.manassiev" created="Mon, 2 Dec 2019 14:42:19 +0000"  >&lt;p&gt;Now that both the dependent tickets have been closed, assigning this to you Kev to evaluate whether we should re-enable that logging.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
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                                            <outwardlinks description="depends on">
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            <issuekey id="1108320">SERVER-45692</issuekey>
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            <issuekey id="1667775">SERVER-55699</issuekey>
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            <issuekey id="1029799">SERVER-44887</issuekey>
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