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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>[SERVER-15248] Factor our scatter-gather behavior of common replication algorithms into template algorithm</title>
                <link>https://jira.mongodb.org/browse/SERVER-15248</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="158017">SERVER-15248</key>
            <summary>Factor our scatter-gather behavior of common replication algorithms into template algorithm</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="schwerin@mongodb.com">Andy Schwerin</assignee>
                                    <reporter username="schwerin@mongodb.com">Andy Schwerin</reporter>
                        <labels>
                    </labels>
                <created>Fri, 12 Sep 2014 22:24:15 +0000</created>
                <updated>Thu, 2 Oct 2014 21:31:19 +0000</updated>
                            <resolved>Fri, 19 Sep 2014 15:46:54 +0000</resolved>
                                                    <fixVersion>2.7.7</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="723084" author="xgen-internal-githook" created="Fri, 19 Sep 2014 15:41:45 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15248&quot; title=&quot;Factor our scatter-gather behavior of common replication algorithms into template algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15248&quot;&gt;&lt;del&gt;SERVER-15248&lt;/del&gt;&lt;/a&gt; Make ScatterGatherRunner, ElectCmdRunner and FreshnessChecker cancelable.&lt;/p&gt;

&lt;p&gt;This is necessary so that step-downs can cancel running elections.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fa1b332411047150fcf706b3a60398c491b44d84&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fa1b332411047150fcf706b3a60398c491b44d84&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="719436" author="xgen-internal-githook" created="Mon, 15 Sep 2014 23:20:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15248&quot; title=&quot;Factor our scatter-gather behavior of common replication algorithms into template algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15248&quot;&gt;&lt;del&gt;SERVER-15248&lt;/del&gt;&lt;/a&gt; Convert FreshnessChecker to use a ScatterGatherAlgorithm.&lt;/p&gt;

&lt;p&gt;Also, use completion functions instead of scheduling work on events to handle&lt;br/&gt;
election phase transitions in repl_coordinator_impl_elect.cpp.  Leads to less&lt;br/&gt;
scheduling, and easier-to-follow code.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d427859985fffb76278a104d46a1a913528dbc4a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d427859985fffb76278a104d46a1a913528dbc4a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="719435" author="xgen-internal-githook" created="Mon, 15 Sep 2014 23:20:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15248&quot; title=&quot;Factor our scatter-gather behavior of common replication algorithms into template algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15248&quot;&gt;&lt;del&gt;SERVER-15248&lt;/del&gt;&lt;/a&gt; Use a ScatterGatherAlgorithm in ElectCmdRunner.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f8a3f964eda2be32154dd8afbfad9bdf6283e82e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f8a3f964eda2be32154dd8afbfad9bdf6283e82e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="719434" author="xgen-internal-githook" created="Mon, 15 Sep 2014 23:20:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15248&quot; title=&quot;Factor our scatter-gather behavior of common replication algorithms into template algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15248&quot;&gt;&lt;del&gt;SERVER-15248&lt;/del&gt;&lt;/a&gt; Convert QuorumChecker into a ScatterGatherAlgorithm.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f082e861661501755b27eee6abf3a4e61e61fdc4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f082e861661501755b27eee6abf3a4e61e61fdc4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="718776" author="xgen-internal-githook" created="Mon, 15 Sep 2014 14:29:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15248&quot; title=&quot;Factor our scatter-gather behavior of common replication algorithms into template algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15248&quot;&gt;&lt;del&gt;SERVER-15248&lt;/del&gt;&lt;/a&gt; Introduce ScatterGatherAlgorithm interface and ScatterGatherRunner.&lt;/p&gt;

&lt;p&gt;The ScatterGatherAlgorithm interface describes operations that a scatter-gather&lt;br/&gt;
process must perform.  ScatterGatherRunner uses a ReplicationExecutor to&lt;br/&gt;
execute a ScatterGatherAlgorithm.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2791e15547ab4bd9adf64bdfb0c51b8aed637d38&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2791e15547ab4bd9adf64bdfb0c51b8aed637d38&lt;/a&gt;&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="158021">SERVER-15249</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="158022">SERVER-15250</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="158023">SERVER-15251</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="158024">SERVER-15252</issuekey>
        </issuelink>
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