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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-38973] Allow configuration of timeouts for getMores on oplog for replication</title>
                <link>https://jira.mongodb.org/browse/SERVER-38973</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We are running into issues with oplog timeout.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;2019-01-14T07:05:11.295+0000 I REPL &lt;span class=&quot;error&quot;&gt;&amp;#91;replication-175&amp;#93;&lt;/span&gt; Restarting oplog query due to error: ExceededTimeLimit: Operation timed out, request was RemoteCommand 1472496 &#8211; target:&amp;lt;xxx&amp;gt;:27017 db:local expDate:2019-01-14T07:05:11.295+0000 cmd:{ getMore: 16260654145, collection: &quot;oplog.rs&quot;, maxTimeMS: 5000, term: 37, lastKnownCommittedOpTime:`&lt;/p&gt;

{ ts: Timestamp 1 547154618000|17, t: 37 }

&lt;p&gt;}. Last fetched optime (with hash): { ts: Timestamp 1547364761000|168, t: 37 }&lt;span class=&quot;error&quot;&gt;&amp;#91;-6073438480613680634&amp;#93;&lt;/span&gt;. Restarts remaining: 3&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;As per instructions in text &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-19605&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-19605&lt;/a&gt;&#160;we have set&#160;&lt;/p&gt;

&lt;p&gt;setParameter:&lt;br/&gt;
 oplogInitialFindMaxSeconds: 600&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;Is there a separate timeout for the oplog getMore command that is not documented?&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="671837">SERVER-38973</key>
            <summary>Allow configuration of timeouts for getMores on oplog for replication</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="dharshanr@scalegrid.net">Dharshan Rangegowda</reporter>
                        <labels>
                    </labels>
                <created>Mon, 14 Jan 2019 07:25:46 +0000</created>
                <updated>Tue, 6 Dec 2022 03:08:30 +0000</updated>
                                            <version>3.4.16</version>
                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="2116504" author="dharshanr@scalegrid.net" created="Wed, 16 Jan 2019 00:40:57 +0000"  >&lt;p&gt;Hi Eric,&lt;/p&gt;

&lt;p&gt;I think its better to have the timeouts configurable instead of hardcoded - I dont see this as a broken replica. We have a replica in China in one of our scenarios and we repeatedly hit this issue.&#160;&lt;/p&gt;</comment>
                            <comment id="2115986" author="eric.sedor" created="Tue, 15 Jan 2019 18:24:19 +0000"  >&lt;p&gt;Hello,&lt;/p&gt;

&lt;p&gt;We can confirm that&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-19605&quot; title=&quot;Oplog timeout should be configurable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-19605&quot;&gt;&lt;del&gt;SERVER-19605&lt;/del&gt;&lt;/a&gt;&#160;is for the initial find only and not additional getMores. We can consider this a feature request.&lt;/p&gt;

&lt;p&gt;That said, because of the implications of changing behavior around oplog getMore timeouts, we would generally recommend you consider the health of the deployment using guidance from &lt;a href=&quot;https://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or &lt;a href=&quot;https://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the mongodb tag&lt;/a&gt;. It sounds like if this timeout needs to be changed there could be serious issues with the deployment that aren&apos;t caused by oplog getMores specifically.&lt;/p&gt;

&lt;p&gt;Does this make sense?&lt;/p&gt;</comment>
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