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    <title>MongoDB Jira</title>
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    <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-37213] small cache size causes hangs in rollback_wt_cache_full.js in 3.6</title>
                <link>https://jira.mongodb.org/browse/SERVER-37213</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The cache size in rollback_wt_cache_full.js is currently set to 1 GB. We should look into lowering this cache size, at least on the 3.6 branch, to a setting that is closer to the built-in rollback refetch limit of 300 MB.&lt;/p&gt;</description>
                <environment></environment>
        <key id="607237">SERVER-37213</key>
            <summary>small cache size causes hangs in rollback_wt_cache_full.js in 3.6</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-storage-engines">Backlog - Storage Engines Team</assignee>
                                    <reporter username="benety.goh@mongodb.com">Benety Goh</reporter>
                        <labels>
                            <label>storage-engines</label>
                    </labels>
                <created>Wed, 19 Sep 2018 18:40:13 +0000</created>
                <updated>Tue, 6 Dec 2022 03:17:56 +0000</updated>
                                            <version>3.6.8</version>
                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2063743" author="sara.williamson" created="Thu, 15 Nov 2018 20:39:09 +0000"  >&lt;p&gt;We don&apos;t need to take any action right now &#8211; this can be deprioritized. We&apos;ll revisit after the other replication cache issues have been addressed.&lt;/p&gt;</comment>
                            <comment id="2052787" author="alexander.gorrod" created="Tue, 6 Nov 2018 04:32:47 +0000"  >&lt;p&gt;Setting a cache size smaller than 1GB is certainly reasonable. There is an upper limit of 20% of cache used for dirty content - which this test is configuring. That translates to 200MB with 1GB. The test is using 10MB documents - so it&apos;ll be necessary to keep the cache size large enough to hold a reasonable number of those very large docs. I wouldn&apos;t use a cache size of less than 300MB (60MB dirty) for the test as it was committed.&lt;/p&gt;</comment>
                            <comment id="2052422" author="benety.goh" created="Mon, 5 Nov 2018 20:46:46 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=alexander.gorrod&quot; class=&quot;user-hover&quot; rel=&quot;alexander.gorrod&quot;&gt;alexander.gorrod&lt;/a&gt;, the issue isn&apos;t with figuring how to set a smaller cache size. We were wondering if it makes sense to run this test with a 0.5GB cache size to match some customers&apos; deployments and determine if this test will still run well.&lt;/p&gt;</comment>
                            <comment id="2051275" author="alexander.gorrod" created="Mon, 5 Nov 2018 00:19:38 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=benety.goh&quot; class=&quot;user-hover&quot; rel=&quot;benety.goh&quot;&gt;benety.goh&lt;/a&gt; is the question here about how to set a cache size smaller than 1GB? If so - the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/configuration-options/#storage.wiredTiger.engineConfig.cacheSizeGB&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;cache size configuration option&lt;/a&gt; is a float to allow setting smaller cache sizes. If not could you please clarify the intent of this ticket?&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="1293310">SERVER-47144</issuekey>
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