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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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>[DOCS-876] Inter replica communication timeout</title>
                <link>https://jira.mongodb.org/browse/DOCS-876</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;Is the inter replica communication timeout configurable? The last I heard it was hard coded to 1 or 2 secs. This would be useful in AWS deployments across zones.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Reporter&lt;/b&gt;: Dharshan Rangegowda&lt;br/&gt;
&lt;b&gt;E-mail&lt;/b&gt;: &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;mailto:dharshanr@scalegrid.net&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;dharshanr@scalegrid.net&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/mail_small.gif&quot; height=&quot;12&quot; width=&quot;13&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;&lt;/p&gt;</description>
                <environment>&lt;br/&gt;
&lt;br/&gt;
*Location*: &lt;a href=&quot;http://docs.mongodb.org/manual/administration/replica-sets/&quot;&gt;http://docs.mongodb.org/manual/administration/replica-sets/&lt;/a&gt;&lt;br/&gt;
*User-Agent*: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/534.53.11 (KHTML, like Gecko) Version/5.1.3 Safari/534.53.10&lt;br/&gt;
*Referrer*: &lt;a href=&quot;http://docs.mongodb.org/manual/replication/&quot;&gt;http://docs.mongodb.org/manual/replication/&lt;/a&gt;&lt;br/&gt;
*Screen Resolution*: 1280 x 800&lt;br/&gt;
</environment>
        <key id="59095">DOCS-876</key>
            <summary>Inter replica communication timeout</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="9">Done</resolution>
                                        <assignee username="stephen.steneker@mongodb.com">Stennie Steneker</assignee>
                                    <reporter username="dharshanr@scalegrid.net">Dharshan Rangegowda</reporter>
                        <labels>
                            <label>collector-298ba4e7</label>
                    </labels>
                <created>Wed, 12 Dec 2012 00:43:41 +0000</created>
                <updated>Fri, 3 Nov 2017 11:24:16 +0000</updated>
                            <resolved>Thu, 20 Dec 2012 05:11:01 +0000</resolved>
                                                                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="219994" author="stennie" created="Thu, 20 Dec 2012 05:11:01 +0000"  >&lt;p&gt;Hi Dharshan,&lt;/p&gt;

&lt;p&gt;The replica set heartbeat and timeout values are currently not configurable.  There are several heuristics used to determine appropropriate health check and failover timing (for example, attempting to avoid false positives where a node may be up but slow to respond to the heartbeat) so these would not be straightforward settings to adjust.&lt;/p&gt;

&lt;p&gt;There are quite a few MongoDB deployments successfully using AWS across multiple availability zones.  If you are interested in best practices, Amazon has a white paper on AWS and MongoDB: &lt;a href=&quot;http://aws.amazon.com/whitepapers/mongodb-on-aws/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://aws.amazon.com/whitepapers/mongodb-on-aws/&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Note that it can take several minutes for TCP to decide a connection is down, so 10-20 seconds is a reasonably snappy (and common) period to determine failover for a database connection.&lt;/p&gt;

&lt;p&gt;There is an existing server request for configurable heartbeat intervals, if you&apos;d like to vote/watch this: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5593&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-5593&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Cheers,&lt;br/&gt;
Stephen&lt;/p&gt;</comment>
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