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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-49794] Cap the size of transactions from flushing the size storer</title>
                <link>https://jira.mongodb.org/browse/SERVER-49794</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;WiredTigerSizeStorer::flush() can end up creating a very large single transaction; this can be problematic for storage engines to handle.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1416803">SERVER-49794</key>
            <summary>Cap the size of transactions from flushing the size storer</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="milkie@mongodb.com">Eric Milkie</assignee>
                                    <reporter username="milkie@mongodb.com">Eric Milkie</reporter>
                        <labels>
                    </labels>
                <created>Wed, 22 Jul 2020 11:27:40 +0000</created>
                <updated>Wed, 30 Sep 2020 19:04:56 +0000</updated>
                            <resolved>Wed, 30 Sep 2020 19:04:56 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3419279" author="milkie" created="Wed, 30 Sep 2020 19:04:56 +0000"  >&lt;p&gt;This doesn&apos;t seem to be necessary at this time; alternative modifications were made to the code to avoid stuck eviction.&lt;/p&gt;</comment>
                            <comment id="3333173" author="milkie" created="Tue, 11 Aug 2020 16:56:45 +0000"  >&lt;p&gt;It&apos;s unclear if this is actually a problem that needs to be solved &amp;#8211; waiting for more investigation the related ticket.&lt;/p&gt;</comment>
                            <comment id="3314298" author="milkie" created="Thu, 30 Jul 2020 17:46:50 +0000"  >&lt;p&gt;Note that one possible way to have this happen would be to create a collection, insert one or more documents, and then drop that collection.  If you did that 71,000 times, even if the collection name stayed the same, you could end up in the situation with 71,000 entries to be flushed in the size storer.&lt;/p&gt;</comment>
                            <comment id="3314193" author="milkie" created="Thu, 30 Jul 2020 16:59:31 +0000"  >&lt;p&gt;The failure that triggered this investigation suggests that flush() generated a transaction with 71,000 inserts.  For this to be possible, the size storer table in memory would need to have contained 71,000 entries representing 71,000 different collections.  I am looking to see if that condition could have been met by that test run.&lt;/p&gt;</comment>
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