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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-58338] Return an error if client attempts an OP_QUERY command other than isMaster/hello</title>
                <link>https://jira.mongodb.org/browse/SERVER-58338</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is follow-on work to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58337&quot; title=&quot;Log deprecation warning and bump serverStatus counter upon receipt of OP_QUERY command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58337&quot;&gt;&lt;del&gt;SERVER-58337&lt;/del&gt;&lt;/a&gt;. The OP_QUERY RPC protocol is deprecated in 5.0, so we can remove support for it in 5.1. As in the other related deprecation and removals (OP_INSERT, OP_KILL_CURSORS, OP_GET_MORE, etc.) we should continue to log a warning and bump the appropriate serverStatus counter prior to returning an error. Also, the error should be user-friendly, meaning that it should indicate that OP_QUERY commands, other than hello and isMaster, are no longer supported, as opposed to being some indecipherable error produced during validation of the incoming network message (e.g. &quot;unknown op code 2004&quot;, or something similar).&lt;/p&gt;</description>
                <environment></environment>
        <key id="1811224">SERVER-58338</key>
            <summary>Return an error if client attempts an OP_QUERY command other than isMaster/hello</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="yoonsoo.kim@mongodb.com">Yoon Soo Kim</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Wed, 7 Jul 2021 19:47:31 +0000</created>
                <updated>Sun, 29 Oct 2023 21:51:13 +0000</updated>
                            <resolved>Mon, 2 Aug 2021 03:33:02 +0000</resolved>
                                                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4107143" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:18:34 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
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            <issuekey id="1811214">SERVER-58337</issuekey>
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                                        <issuelink>
            <issuekey id="1911101">SERVER-61030</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="2056062">SERVER-66806</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="291886">SERVER-24426</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1836824">SERVER-58981</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1849245">SERVER-59300</issuekey>
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                            <customfieldvalue>The MongoDB shell cannot connect to 3.4 or older servers since we&amp;#39;ve changed DBClientConnection so that it sends &amp;quot;hello&amp;quot; or &amp;quot;isMaster&amp;quot; command as OP_MSG. DBClientConnection is also used by the repl code and the repl code bypasses wire protocol negotiation to send &amp;quot;_isSelf&amp;quot; command which is sent using the default wire protocol which is OP_MSG protocol now. Therefore, 5.1 mongod can&amp;#39;t be interoperable with 3.4 or older mongod.&lt;br/&gt;
&lt;br/&gt;
And also found that saslStart/saslContinue are being sent as OP_QUERY commands.&lt;br/&gt;
&lt;br/&gt;
So, only hello/isMaster/_isSelf/saslStart/saslContinue/buildinfo are allowed for OP_QUERY commands.</customfieldvalue>

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