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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-83615] Treat maxValidateMemoryUsageMB as an absolute limit</title>
                <link>https://jira.mongodb.org/browse/SERVER-83615</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;del&gt;Right now, we allow &lt;a href=&quot;https://github.com/10gen/mongo/blob/ea5336dd3fe4dd481d2c991b3bdd2f01e5593657/src/mongo/db/catalog/index_consistency.cpp#L581-L582&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;double maxValidateMemoryUsageMB&lt;/a&gt; during the second phase of validation.&lt;/del&gt; &lt;em&gt;It appears like we use double the memory limit but we actually double count the number of index keys in the first phase. We can update the comment to make this more clear.&lt;/em&gt; If a user sets maxValidateMemoryUsage to their max available memory like in &lt;a href=&quot;https://github.com/10gen/mms/blob/ff4c7915e436cbd6bc82ae3cf900ffc42ee4fbb4/server/src/main/com/xgen/cloud/nds/datavalidation/_public/model/DataValidationDefaults.java#L22-L24&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;atlas&lt;/a&gt;, validation can OOM &lt;em&gt;because our limit calculation undercounts actual memory usage/ignores other metadata for each key&lt;/em&gt;. &lt;del&gt;We should respect maxValidateMemoryUsageMB as the memory limit and consider doubling the &lt;a href=&quot;https://github.com/10gen/mongo/blob/240d84a4693e0fddb33e115d715e235e97657f80/src/mongo/db/catalog/validate.idl#L49&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;server default&lt;/a&gt;.&lt;/del&gt;&lt;/p&gt;

&lt;p&gt;We want to consider accounting for other metadata that is stored along with each key during validation when calculating the estimated memory usage.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2510161">SERVER-83615</key>
            <summary>Treat maxValidateMemoryUsageMB as an absolute limit</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="1" iconUrl="https://jira.mongodb.org/images/icons/statuses/open.png" description="">Open</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="shinyee.tan@mongodb.com">Shin Yee Tan</reporter>
                        <labels>
                            <label>storex-ranked</label>
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                <created>Mon, 27 Nov 2023 23:03:30 +0000</created>
                <updated>Mon, 29 Jan 2024 19:12:49 +0000</updated>
                                                                                                <votes>0</votes>
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