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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-68781] Check value of hidden maxChunkSizeBytes</title>
                <link>https://jira.mongodb.org/browse/SERVER-68781</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In versions 4.2 - 5.0, there is a hidden parameter to the moveChunk command which can be used to specify the max chunk size to move. However, there are not any checks on what this value can be set to. This can cause problems if the value is set to NaN or a negative value. We should check that the passed in value is a positive number and throw invalid options otherwise.&lt;/p&gt;

&lt;p&gt;This parameter was removed in 5.3, so is not a problem on versions greater than this.&lt;/p&gt;

&lt;p&gt;Passing NaN can also result in different behavior depending on the architecture and version:&lt;/p&gt;

&lt;p&gt;x86&lt;/p&gt;

&lt;p&gt;v4.2 -&amp;gt; max chunk size set to 2^64 bytes and entering critical section during transfer mods not allowed&lt;/p&gt;

&lt;p&gt;v4.4 &amp;amp; 5.0 -&amp;gt; max chunk size set to -2^63 and max number of documents to transfer set to 2&lt;/p&gt;

&lt;p&gt;arm&lt;/p&gt;

&lt;p&gt;v4.2, 4.4, &amp;amp; 5.0 -&amp;gt; max chunk size set to the default&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;So we should separately check that the value is a number and that it is not negative so that the behavior is consistent across architectures&lt;/p&gt;</description>
                <environment></environment>
        <key id="2112289">SERVER-68781</key>
            <summary>Check value of hidden maxChunkSizeBytes</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-sharding-emea">[DO NOT USE] Backlog - Sharding EMEA</assignee>
                                    <reporter username="allison.easton@mongodb.com">Allison Easton</reporter>
                        <labels>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Fri, 12 Aug 2022 10:20:09 +0000</created>
                <updated>Mon, 5 Dec 2022 23:51:09 +0000</updated>
                            <resolved>Tue, 4 Oct 2022 13:27:14 +0000</resolved>
                                    <version>4.4.15</version>
                    <version>5.0.10</version>
                    <version>4.2.22</version>
                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4876162" author="tommaso.tocci" created="Tue, 4 Oct 2022 13:27:14 +0000"  >&lt;p&gt;You can only hit this issue if you are doing a manual moveChunk and using an undocumented parameter, additionally the problem has been already resolved in versions &amp;gt; &lt;tt&gt;5.0.&lt;/tt&gt;&lt;/p&gt;</comment>
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            <issuekey id="2099440">SERVER-68309</issuekey>
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