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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-35525] Consider converting WT tunables into MongoDB parameters</title>
                <link>https://jira.mongodb.org/browse/SERVER-35525</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="557174">SERVER-35525</key>
            <summary>Consider converting WT tunables into MongoDB parameters</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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>
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                                    <resolution id="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="dmitry.agranat@mongodb.com">Dmitry Agranat</reporter>
                        <labels>
                            <label>nonnyc</label>
                            <label>storage-engines</label>
                    </labels>
                <created>Sun, 10 Jun 2018 14:02:32 +0000</created>
                <updated>Tue, 6 Dec 2022 03:26:40 +0000</updated>
                            <resolved>Fri, 22 Jun 2018 15:06:07 +0000</resolved>
                                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="1917247" author="bruce.lucas@10gen.com" created="Mon, 11 Jun 2018 17:34:36 +0000"  >&lt;p&gt;The concepts embodied in those parameters seem mostly pretty inherently WT-specific. I would be concerned whether an attempt to hide them behind something more generic will lose too much fidelity and make it difficult to achieve the desired tuning. I think there are two things that are requested here:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;document the specific WT tunables that we have found customers need in a manner that reflects how they interact with the way MongoDB uses them&lt;/li&gt;
	&lt;li&gt;make it more convenient for customers to tune them by promoting them to first-class MongoDB parameters&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Do these actually need to go through the API as such? Couldn&apos;t they be handled in the same way that we handle the existing WiredTiger-specific options today, like wiredTigerCacheSizeGB, wiredTigerJournalCompressor, wiredTigerDirectoryForIndexes, wiredTigerCollectionBlockCompressor, wiredTigerIndexPrefixCompression, etc.?&lt;/p&gt;</comment>
                            <comment id="1917158" author="milkie" created="Mon, 11 Jun 2018 16:41:22 +0000"  >&lt;p&gt;By all storage engines, I am referring to putting something through MongoDB&apos;s generic pluggable storage API that will make sense for all storage engines.  It will be up to each individual storage engine to decide how to implement the functionality, but it will be our jobs to ensure that the functionality isn&apos;t completely WiredTiger-centric.&lt;/p&gt;</comment>
                            <comment id="1917026" author="milkie" created="Mon, 11 Jun 2018 15:33:52 +0000"  >&lt;p&gt;If we end up doing this, I prefer that we come up with some cover parameters that set underlying storage engine settings together as a group, rather than simply exposing internal storage engine tuning knobs to admins.  We need to have parameters that make sense for all storage engines, not just WiredTiger.&lt;/p&gt;</comment>
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