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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>
    </build-info>


<item>
            <title>[SERVER-66502] Do not increase RPU when waiting for write concerns</title>
                <link>https://jira.mongodb.org/browse/SERVER-66502</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We found that waiting for write concerns will cause RPUs in HELP-33863 when reading the top of the oplog. HELP-33863 has more details about the behavior. It&apos;s surprising to customers and &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=chris.shum%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;chris.shum@mongodb.com&quot;&gt;chris.shum@mongodb.com&lt;/a&gt; confirmed that we need to change the behavior.&lt;/p&gt;

&lt;p&gt;We should test {w: 1} and {w: &quot;majority&quot;} with &quot;j&quot; unspecified, &quot;true&quot; and &quot;false&quot;.&lt;/p&gt;

&lt;p&gt;Here&apos;s the stack trace of incrementing RPUs on waiting for write concerns.&lt;/p&gt;
&lt;p/&gt;
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&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;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;#0  mongo::ResourceConsumption::MetricsCollector::incrementOneDocRead (this=0x7fee240c5678, docBytesRead=167) at src/mongo/db/query/server_status.h:240&lt;/span&gt;&lt;/pre&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;   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;#1  0x00005591399a4a6c in mongo::WiredTigerRecordStoreCursorBase::next (this=0x7fee2cc15b20) at src/mongo/db/storage/idle_thread_block.h:2243&lt;/span&gt;&lt;/pre&gt;
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				&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;   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;#2  0x000055913998dc9e in mongo::WiredTigerOplogManager::waitForAllEarlierOplogWritesToBeVisible (this=0x7fee2ce66fe0, oplogRecordStore=0x7fee247ce020, opCtx=0x7fee25ecd6e0) at src/mongo/bson/idle_thread_block.h:134&lt;/span&gt;&lt;/pre&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;   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;#3  0x00005591399a2309 in mongo::WiredTigerRecordStore::waitForAllEarlierOplogWritesToBeVisibleImpl (this=0x7fee247ce020, opCtx=0x7fee25ecd6e0) at src/mongo/db/storage/idle_thread_block.h:1881&lt;/span&gt;&lt;/pre&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;   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;#4  0x000055913b1bb26a in mongo::RecordStore::waitForAllEarlierOplogWritesToBeVisible (this=0x7fee247ce020, opCtx=0x7fee25ecd6e0) at src/mongo/bson/operation_context.h:112&lt;/span&gt;&lt;/pre&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;   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;#5  0x0000559138a6a8e2 in mongo::repl::StorageInterfaceImpl::waitForAllEarlierOplogWritesToBeVisible (this=0x7fee2c7b82c0, opCtx=0x7fee25ecd6e0, primaryOnly=true) at src/mongo/bson/storage_interface.h:1512&lt;/span&gt;&lt;/pre&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;   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;#6  0x000055913a8efecf in mongo::waitForNoOplogHolesIfNeeded (opCtx=0x7fee25ecd6e0) at src/third_party/variant-1.4.0/include/mpark/log_options.h:260&lt;/span&gt;&lt;/pre&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;   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;#7  0x000055913a8f0357 in mongo::waitForWriteConcern (opCtx=0x7fee25ecd6e0, replOpTime=..., writeConcern=..., result=0x7fee01920f40) at src/third_party/variant-1.4.0/include/mpark/log_options.h:318&lt;/span&gt;&lt;/pre&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;   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;#8  0x000055913888db72 in mongo::ServiceEntryPointMongod::Hooks::waitForWriteConcern(mongo::OperationContext*, mongo::CommandInvocation const*, mongo::repl::OpTime const&amp;amp;, mongo::BSONObjBuilder&amp;amp;) const::{lambda()#1}::operator()() const (__closure=0x7fee01921060)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   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;    at build/debug/mongo/s/shard_cannot_refresh_due_to_locks_held_exception.h:133&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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;   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;#9  0x000055913888dd58 in mongo::ServiceEntryPointMongod::Hooks::waitForWriteConcern (this=0x7fee24fc19e0, opCtx=0x7fee25ecd6e0, invocation=0x7fee26797da0, lastOpBeforeRun=..., commandResponseBuilder=...)&lt;/span&gt;&lt;/pre&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;   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;    at build/debug/mongo/s/shard_cannot_refresh_due_to_locks_held_exception.h:140&lt;/span&gt;&lt;/pre&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;   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;#10 0x000055913889bbad in mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_waitForWriteConcern (this=0x7fee26cd0ba0, bb=...) at src/mongo/db/stats/tracking_metadata.h:1171&lt;/span&gt;&lt;/pre&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;   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;#11 0x000055913889d8a8 in mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_checkWriteConcern (this=0x7fee26cd0ba0) at src/mongo/db/stats/tracking_metadata.h:1273&lt;/span&gt;&lt;/pre&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;   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;#12 0x000055913889bc52 in operator() (__closure=0x7fee019214e8, status=...) at src/mongo/db/stats/tracking_metadata.h:1178&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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;   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;#13 0x000055913889bd2b in mongo::future_details::call&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt;&amp;amp;&amp;gt;(struct {...} &amp;amp;, mongo::StatusWith&amp;lt;mongo::future_details::FakeVoid&amp;gt;) (func=..., sw=...)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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;   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;    at src/mongo/util/status_with.h:260&lt;/span&gt;&lt;/pre&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;   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;#14 0x000055913889bdca in mongo::future_details::throwingCall&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt;, mongo::StatusWith&amp;lt;mongo::future_details::FakeVoid&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (func=...)&lt;/span&gt;&lt;/pre&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;   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;    at src/mongo/util/status_with.h:308&lt;/span&gt;&lt;/pre&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;   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;#15 0x000055913889be73 in operator() (__closure=0x7fee01921430, val=...) at src/mongo/util/status_with.h:977&lt;/span&gt;&lt;/pre&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;   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;#16 0x000055913889c5f4 in mongo::future_details::FutureImpl&amp;lt;mongo::future_details::FakeVoid&amp;gt;::generalImpl&amp;lt;mongo::future_details::FutureImpl&amp;lt;mongo::future_details::FakeVoid&amp;gt;::onCompletion&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt; &amp;gt;(mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt;&amp;amp;&amp;amp;) &amp;amp;&amp;amp;::&amp;lt;lambda(mongo::future_details::FakeVoid&amp;amp;&amp;amp;)&amp;gt;, mongo::future_details::FutureImpl&amp;lt;mongo::future_details::FakeVoid&amp;gt;::onCompletion&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt; &amp;gt;(mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt;&amp;amp;&amp;amp;) &amp;amp;&amp;amp;::&amp;lt;lambda(mongo::Status&amp;amp;&amp;amp;)&amp;gt;, mongo::future_details::FutureImpl&amp;lt;mongo::future_details::FakeVoid&amp;gt;::onCompletion&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt; &amp;gt;(mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt;&amp;amp;&amp;amp;) &amp;amp;&amp;amp;::&amp;lt;lambda()&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;, struct {...} &amp;amp;&amp;amp;, struct {...} &amp;amp;&amp;amp;) (this=0x7fee019214f0, success=..., fail=..., notReady=...) at src/mongo/util/status_with.h:1184&lt;/span&gt;&lt;/pre&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;   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;#17 0x000055913889c7a8 in mongo::future_details::FutureImpl&amp;lt;mongo::future_details::FakeVoid&amp;gt;::onCompletion&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (this=0x7fee019214f0, func=...)&lt;/span&gt;&lt;/pre&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;   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;    at src/mongo/util/status_with.h:1015&lt;/span&gt;&lt;/pre&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;   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;#18 0x000055913889c847 in mongo::Future&amp;lt;void&amp;gt;::onCompletion&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl()::&amp;lt;lambda(mongo::Status)&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (this=0x7fee019214f0, func=...) at src/mongo/bson/write_concern_options.h:418&lt;/span&gt;&lt;/pre&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;   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;#19 0x000055913889c8e1 in mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern::_runImpl (this=0x7fee26cd0ba0) at src/mongo/db/stats/tracking_metadata.h:1182&lt;/span&gt;&lt;/pre&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;   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;#20 0x0000559138895ea2 in operator() (__closure=0x7fee019215b8) at src/mongo/db/stats/tracking_metadata.h:656&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;   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;#21 0x00005591388a9bb6 in mongo::makeReadyFutureWith&amp;lt;mongo::(anonymous namespace)::RunCommandImpl::run()::&amp;lt;lambda()&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (func=...) at src/mongo/bson/write_concern_options.h:1225&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   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;#22 0x00005591388973e4 in mongo::(anonymous namespace)::RunCommandImpl::run (this=0x7fee26cd0ba0) at src/mongo/db/stats/tracking_metadata.h:654&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;   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;#23 0x00005591388a087a in operator()&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern&amp;gt; (__closure=0x7fee0192178f, runner=0x7fee26cd0ba0) at src/mongo/db/stats/tracking_metadata.h:1639&lt;/span&gt;&lt;/pre&gt;
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				&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;   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;#24 0x00005591388a08fc in operator() (__closure=0x7fee01921740) at src/mongo/rpc/api_parameters_gen.h:827&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   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;#25 0x00005591388ac738 in mongo::makeReadyFutureWith&amp;lt;mongo::future_util::AsyncState&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern&amp;gt;::thenWithState&amp;lt;mongo::(anonymous namespace)::ExecCommandDatabase::_commandExec()::&amp;lt;lambda()&amp;gt;::&amp;lt;lambda(auto:81*)&amp;gt; &amp;gt;(mongo::(anonymous namespace)::ExecCommandDatabase::_commandExec()::&amp;lt;lambda()&amp;gt;::&amp;lt;lambda(auto:81*)&amp;gt;&amp;amp;&amp;amp;) &amp;amp;&amp;amp;::&amp;lt;lambda()&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (func=...) at src/mongo/bson/write_concern_options.h:1225&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   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;#26 0x00005591388a0a4e in mongo::future_util::AsyncState&amp;lt;mongo::(anonymous namespace)::RunCommandAndWaitForWriteConcern&amp;gt;::thenWithState&amp;lt;mongo::(anonymous namespace)::ExecCommandDatabase::_commandExec()::&amp;lt;lambda()&amp;gt;::&amp;lt;lambda(auto:81*)&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (&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;   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;    this=0x7fee019217a0, launcher=...) at src/mongo/rpc/api_parameters_gen.h:832&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;   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;#27 0x00005591388a0f69 in operator() (__closure=0x7fee01921800) at src/mongo/db/stats/tracking_metadata.h:1639&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   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;#28 0x00005591388a1f51 in mongo::(anonymous namespace)::ExecCommandDatabase::_commandExec (this=0x7fee240de020) at src/mongo/db/stats/tracking_metadata.h:1646&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   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;#29 0x0000559138894b6e in operator() (__closure=0x7fee01921920) at src/mongo/db/stats/tracking_metadata.h:536&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;   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;#30 0x00005591388a97df in mongo::makeReadyFutureWith&amp;lt;mongo::(anonymous namespace)::ExecCommandDatabase::run()::&amp;lt;lambda()&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (func=...) at src/mongo/bson/write_concern_options.h:1225&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;   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;#31 0x0000559138895770 in mongo::(anonymous namespace)::ExecCommandDatabase::run (this=0x7fee240de020) at src/mongo/db/stats/tracking_metadata.h:534&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;   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;#32 0x00005591388a4204 in operator()&amp;lt;mongo::(anonymous namespace)::ExecCommandDatabase&amp;gt; (__closure=0x7fee01921adf, runner=0x7fee240de020) at src/mongo/db/stats/tracking_metadata.h:1917&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;   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;#33 0x00005591388a4286 in operator() (__closure=0x7fee01921a90) at src/mongo/rpc/api_parameters_gen.h:827&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;   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;#34 0x00005591388ae118 in mongo::makeReadyFutureWith&amp;lt;mongo::future_util::AsyncState&amp;lt;mongo::(anonymous namespace)::ExecCommandDatabase&amp;gt;::thenWithState&amp;lt;mongo::(anonymous namespace)::executeCommand(std::shared_ptr&amp;lt;mongo::(anonymous namespace)::HandleRequest::ExecutionContext&amp;gt;)::&amp;lt;lambda()&amp;gt; mutable::&amp;lt;lambda(auto:83*)&amp;gt; &amp;gt;(mongo::(anonymous namespace)::executeCommand(std::shared_ptr&amp;lt;mongo::(anonymous namespace)::HandleRequest::ExecutionContext&amp;gt;)::&amp;lt;lambda()&amp;gt; mutable::&amp;lt;lambda(auto:83*)&amp;gt;&amp;amp;&amp;amp;) &amp;amp;&amp;amp;::&amp;lt;lambda()&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (func=...)&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;   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;    at src/mongo/bson/write_concern_options.h:1225&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;   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;#35 0x00005591388a43d8 in mongo::future_util::AsyncState&amp;lt;mongo::(anonymous namespace)::ExecCommandDatabase&amp;gt;::thenWithState&amp;lt;mongo::(anonymous namespace)::executeCommand(std::shared_ptr&amp;lt;mongo::(anonymous namespace)::HandleRequest::ExecutionContext&amp;gt;)::&amp;lt;lambda()&amp;gt; mutable::&amp;lt;lambda(auto:83*)&amp;gt; &amp;gt;(struct {...} &amp;amp;&amp;amp;) (this=0x7fee01921ae0, launcher=...) at src/mongo/rpc/api_parameters_gen.h:832&lt;/span&gt;&lt;/pre&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;   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;#36 0x00005591388a4446 in operator() (__closure=0x7fee23f5d018) at src/mongo/db/stats/tracking_metadata.h:1917&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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;   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;#37 0x00005591388a44bb in mongo::future_details::call&amp;lt;mongo::(anonymous namespace)::executeCommand(std::shared_ptr&amp;lt;mongo::(anonymous namespace)::HandleRequest::ExecutionContext&amp;gt;)::&amp;lt;lambda()&amp;gt;&amp;amp;&amp;gt;(struct {...} &amp;amp;, mongo::future_details::FakeVoid) (func=...)&lt;/span&gt;&lt;/pre&gt;
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					&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;...&lt;/span&gt;&lt;/pre&gt;
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&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="2047931">SERVER-66502</key>
            <summary>Do not increase RPU when waiting for write concerns</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="yujin.kang@mongodb.com">Yujin Kang Park</assignee>
                                    <reporter username="siyuan.zhou@mongodb.com">Siyuan Zhou</reporter>
                        <labels>
                    </labels>
                <created>Mon, 16 May 2022 21:14:17 +0000</created>
                <updated>Sun, 29 Oct 2023 21:38:12 +0000</updated>
                            <resolved>Wed, 13 Jul 2022 10:48:58 +0000</resolved>
                                                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4676062" author="xgen-internal-githook" created="Wed, 13 Jul 2022 09:45:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Yu Jin Kang Park&apos;, &apos;email&apos;: &apos;yujin.kang@mongodb.com&apos;, &apos;username&apos;: &apos;ykangpark&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66502&quot; title=&quot;Do not increase RPU when waiting for write concerns&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66502&quot;&gt;&lt;del&gt;SERVER-66502&lt;/del&gt;&lt;/a&gt;: Pause consumption metrics collection in wait for write concern.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8109993be980df50d937b4eec0c500605bc0dc82&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8109993be980df50d937b4eec0c500605bc0dc82&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4653363" author="siyuan.zhou@10gen.com" created="Fri, 1 Jul 2022 17:12:11 +0000"  >&lt;p&gt;The architecture of Serverless is less relevant here. In the current system, multiple tenants live on a replica set and a pool has multiple replica sets.&lt;/p&gt;</comment>
                            <comment id="4653357" author="siyuan.zhou@10gen.com" created="Fri, 1 Jul 2022 17:09:49 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=daniel.gottlieb%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;daniel.gottlieb@mongodb.com&quot;&gt;daniel.gottlieb@mongodb.com&lt;/a&gt; made a great diagram. Here are his comments.&lt;/p&gt;

&lt;p/&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 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;| BeginTxn          |              |&lt;/span&gt;&lt;/pre&gt;
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				&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;   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;|                   | BeginTxn     |&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;   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;| Write A           |              |&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;
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			&lt;/td&gt;
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				&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;
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			&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;   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;| Commit            |              |&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;   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;| OnCommit hooks    |              |&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;
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			&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;| WaitForTopOfOplog |              |&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;The time window we&apos;re discussing is the customer&apos;s write:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;assigning a timestamp -&amp;gt;&lt;/li&gt;
	&lt;li&gt;reading the top of oplog.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;To see one&apos;s own oplog entry, that means none of the other writers in the system perform the steps:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;assigning a timestamp -&amp;gt;&lt;/li&gt;
	&lt;li&gt;committing&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Some perhaps subtle, but non-negligible costs that can widen the customer&apos;s insert window:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;I believe the onCommit hooks are run before we do the read to wait for the top of oplog. Though I don&apos;t expect a basic insert to be too interesting.&lt;/li&gt;
	&lt;li&gt;inserts allocate their timestamp before doing their inserts. If the customer is doing large batch inserts (not what their sample code does), that might open up a much bigger window than a simple insert
	&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
		&lt;li&gt;updates/deletes assign their timestamp just before writing the oplog entry&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
	&lt;li&gt;Also getting the top of oplog does have to get a new snapshot which is grabs a lock.&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="4638869" author="siyuan.zhou@10gen.com" created="Fri, 24 Jun 2022 18:16:54 +0000"  >&lt;p&gt;This is a surprising behavior we should fix. I don&apos;t know how it compares to other work on your plate, but I&apos;d hope this wouldn&apos;t sit on the backlog for more than 3 months, so that it can catch the next rapid release.&lt;/p&gt;</comment>
                            <comment id="4638387" author="henrik.edin" created="Fri, 24 Jun 2022 15:23:11 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=siyuan.zhou%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;siyuan.zhou@mongodb.com&quot;&gt;siyuan.zhou@mongodb.com&lt;/a&gt; what is the priority for this?&lt;/p&gt;</comment>
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