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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-29989] BSON field &apos;OperationSessionInfo.$logicalTime&apos; is a duplicate field</title>
                <link>https://jira.mongodb.org/browse/SERVER-29989</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;While running patch with causal consistency set to true by default got this error&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;
		&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;   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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.180+0000 assert: [40413] != [73] are not equal : Expected failure code did not match actual in command result: {&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.181+0000 	&quot;ok&quot; : 0,&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.181+0000 	&quot;errmsg&quot; : &quot;BSON field &apos;OperationSessionInfo.$logicalTime&apos; is a duplicate field&quot;,&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.181+0000 	&quot;code&quot; : 40413,&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.181+0000 	&quot;codeName&quot; : &quot;Location40413&quot;,&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.181+0000 	&quot;$logicalTime&quot; : {&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.182+0000 		&quot;clusterTime&quot; : Timestamp(1499278149, 2),&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.182+0000 		&quot;signature&quot; : {&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;
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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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.182+0000 			&quot;keyId&quot; : NumberLong(&quot;6439350411403984900&quot;)&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.182+0000 		}&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.183+0000 	},&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.183+0000 	&quot;operationTime&quot; : Timestamp(1499278149, 2)&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;[js_test:commands_namespace_parsing] 2017-07-05T18:09:09.183+0000 } : undefined&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;Investigated, testing the fix.&lt;br/&gt;
The code running the command on mongos propagates the response from mongod and adds cluster time without check: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.5.9/src/mongo/s/commands/strategy.cpp#L133&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r3.5.9/src/mongo/s/commands/strategy.cpp#L133&lt;/a&gt; &lt;br/&gt;
This also happens when mongod sends the request to a another shard: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.5.9/src/mongo/db/service_entry_point_mongod.cpp#L267&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r3.5.9/src/mongo/db/service_entry_point_mongod.cpp#L267&lt;/a&gt;&lt;/p&gt;


&lt;p&gt;The proposed fix is to skip appending cluster time if its already there in &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.5.9/src/mongo/rpc/metadata/logical_time_metadata.cpp#L105&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/r3.5.9/src/mongo/rpc/metadata/logical_time_metadata.cpp#L105&lt;/a&gt;. Will use the greatest of both cluster times&lt;/p&gt;</description>
                <environment></environment>
        <key id="400896">SERVER-29989</key>
            <summary>BSON field &apos;OperationSessionInfo.$logicalTime&apos; is a duplicate field</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="13203">Gone away</resolution>
                                        <assignee username="misha.tyulenev@mongodb.com">Misha Tyulenev</assignee>
                                    <reporter username="misha.tyulenev@mongodb.com">Misha Tyulenev</reporter>
                        <labels>
                            <label>PM-221</label>
                    </labels>
                <created>Wed, 5 Jul 2017 22:39:39 +0000</created>
                <updated>Fri, 27 Oct 2023 20:44:02 +0000</updated>
                            <resolved>Thu, 17 Aug 2017 16:07:45 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1621045" author="misha.tyulenev" created="Thu, 13 Jul 2017 14:47:18 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=jack.mulrow&quot; class=&quot;user-hover&quot; rel=&quot;jack.mulrow&quot;&gt;jack.mulrow&lt;/a&gt; I found other cases when it duplicates the clusterTime - when mongod sends a command to config shard. So with that Im going to change the approach and &lt;br/&gt;
1. copy the greatest cluster time it seems there is no way around it &lt;br/&gt;
2. Move this code to the LogicalTimeMetadata::writeToMetadata&lt;br/&gt;
Updated the description per this&lt;/p&gt;</comment>
                            <comment id="1617679" author="kaloian.manassiev" created="Mon, 10 Jul 2017 15:00:14 +0000"  >&lt;p&gt;OK cool. Then I am going to make it 3.5 Required because it seems serious enough to warrant that.&lt;/p&gt;</comment>
                            <comment id="1617671" author="misha.tyulenev" created="Mon, 10 Jul 2017 14:57:54 +0000"  >&lt;p&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; Its not the test fixing issue. The problem is that somewhere in OP_MSG the @logicalTime added twice - this is not correct it should be one top level $logicalTime which is the greatest. Once its fixed the error will go away&lt;/p&gt;</comment>
                            <comment id="1617622" author="kaloian.manassiev" created="Mon, 10 Jul 2017 14:21:47 +0000"  >&lt;p&gt;Did this error message change because we started using the IDL parser? Also, what is the impact of this - is it a matter of fixing a test only or there&apos;s an internal dependency?&lt;/p&gt;

&lt;p&gt;I am moving it out of the iteration, because it is Needs Triage.&lt;/p&gt;</comment>
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