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            <title>[SERVER-38806] Reduce time spent blocking new transaction coordination requests after coordinator failover</title>
                <link>https://jira.mongodb.org/browse/SERVER-38806</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;(Old title: Allow finer grained control of coordinator re-creation on step-up)&lt;/p&gt;

&lt;p&gt;On step-up, we launch an asynchronous task to read all documents from the coordinators collection and recreate new TransactionCoordinator objects in memory for each document to continue the commit process for that transaction where it left off. Currently, all operations that access the TransactionCoordinatorCatalog during this time block until this process is complete. This means that all operations that attempt to create a new transaction or to commit an existing transaction will block behind that process, which could be time-consuming since it requires a full collection scan. We should probably benchmark how long that will be expected to take, and if necessary, improve the concurrency mechanism around creating new coordinators on step-up.&lt;/p&gt;</description>
                <environment></environment>
        <key id="664233">SERVER-38806</key>
            <summary>Reduce time spent blocking new transaction coordination requests after coordinator failover</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>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="matthew.saltz@mongodb.com">Matthew Saltz</reporter>
                        <labels>
                            <label>ShardedTxn:DistributedCommit</label>
                            <label>ShardedTxn:FutureOptimizations</label>
                            <label>pm-564</label>
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                <created>Wed, 2 Jan 2019 14:48:15 +0000</created>
                <updated>Tue, 6 Dec 2022 03:09:27 +0000</updated>
                            <resolved>Fri, 24 May 2019 19:25:45 +0000</resolved>
                                                                    <component>Sharding</component>
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