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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-5593] Make heartbeat interval configurable to suit low-bandwidth links</title>
                <link>https://jira.mongodb.org/browse/SERVER-5593</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The time between heartbeat pings is hardcoded (&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/repl/heartbeat.cpp#L373&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/db/repl/heartbeat.cpp#L373&lt;/a&gt;) to be 2000 milliseconds. This amounts to quite a lot of traffic for a backup node on an expensive link (it works out at about 3 GB / month / node if there are only two nodes and communication is over a gvpe network).&lt;/p&gt;

&lt;p&gt;It would be useful if it was possible to configure the heartbeat ping time to alternative values.&lt;/p&gt;</description>
                <environment></environment>
        <key id="36165">SERVER-5593</key>
            <summary>Make heartbeat interval configurable to suit low-bandwidth links</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="9">Done</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="a1kmm">Andrew Miller</reporter>
                        <labels>
                            <label>elections</label>
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                <created>Fri, 13 Apr 2012 05:42:15 +0000</created>
                <updated>Tue, 6 Dec 2022 05:33:56 +0000</updated>
                            <resolved>Thu, 14 Jun 2018 19:36:58 +0000</resolved>
                                    <version>2.1.0</version>
                                                    <component>Replication</component>
                                        <votes>14</votes>
                                    <watches>16</watches>
                                                                                                                <comments>
                            <comment id="1921067" author="spencer" created="Thu, 14 Jun 2018 19:36:58 +0000"  >&lt;p&gt;Heartbeat interval is now configurable, and also not the main way liveness is maintained in pv1&lt;/p&gt;</comment>
                            <comment id="1112113" author="andrewdoumaux" created="Fri, 11 Dec 2015 16:02:25 +0000"  >&lt;p&gt;I agree that heartbeats (and associated timeouts) should be configurable.  A network partition lasting over 12 seconds with the primary member will cause a fail-over and possible rollback transactions.  &lt;/p&gt;</comment>
                            <comment id="109505" author="eliot" created="Fri, 13 Apr 2012 12:00:10 +0000"  >&lt;p&gt;Generally more configurations options aren&apos;t a good thing.&lt;/p&gt;</comment>
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