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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>[GODRIVER-2930] Allow setting batch size on change stream cursor</title>
                <link>https://jira.mongodb.org/browse/GODRIVER-2930</link>
                <project id="14289" key="GODRIVER">Go Driver</project>
                    <description>&lt;p&gt;Currently you can set batch size on a &lt;tt&gt;ChangeStream&lt;/tt&gt; using &lt;tt&gt;ChangeStreamOptions.SetBatchSize&lt;/tt&gt;. However, that applies to both the initial &quot;aggregate&quot; command as well as the subsequent &quot;getMore&quot; commands run while iterating the change stream. That can cause a problem when starting a change stream on low- or bursty-traffic collections because the initial aggregate won&apos;t return a cursor until the batch size is filled. The tailable cursor used by a change stream is intended to wait indefinitely for updates, but the initial &quot;aggregate&quot; command isn&apos;t, so will time out if there aren&apos;t enough changes to fill a batch, leading to an unexpected error.&lt;/p&gt;

&lt;p&gt;Definition of done:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Allow setting batch size on a &lt;tt&gt;ChangeStream&lt;/tt&gt; after it&apos;s returned by &lt;tt&gt;Watch&lt;/tt&gt;.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="2407335">GODRIVER-2930</key>
            <summary>Allow setting batch size on change stream cursor</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="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="13201">Fixed</resolution>
                                        <assignee username="matt.dale@mongodb.com">Matt Dale</assignee>
                                    <reporter username="matt.dale@mongodb.com">Matt Dale</reporter>
                        <labels>
                    </labels>
                <created>Wed, 2 Aug 2023 17:27:49 +0000</created>
                <updated>Sat, 28 Oct 2023 11:37:13 +0000</updated>
                            <resolved>Wed, 2 Aug 2023 20:49:35 +0000</resolved>
                                                    <fixVersion>1.12.1</fixVersion>
                    <fixVersion>1.11.9</fixVersion>
                                    <component>Change Streams</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="5608590" author="xgen-internal-githook" created="Wed, 2 Aug 2023 19:27:39 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Matt Dale&apos;, &apos;email&apos;: &apos;9760375+matthewdale@users.noreply.github.com&apos;, &apos;username&apos;: &apos;matthewdale&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-2930&quot; title=&quot;Allow setting batch size on change stream cursor&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-2930&quot;&gt;&lt;del&gt;GODRIVER-2930&lt;/del&gt;&lt;/a&gt; Allow setting batch size for subsequent getMore&apos;s on a ChangeStream. (#1342)&lt;br/&gt;
Branch: release/1.12&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/3ff68c3aeb52039692317f51c440293146058b15&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/3ff68c3aeb52039692317f51c440293146058b15&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5608588" author="xgen-internal-githook" created="Wed, 2 Aug 2023 19:27:09 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Matt Dale&apos;, &apos;email&apos;: &apos;9760375+matthewdale@users.noreply.github.com&apos;, &apos;username&apos;: &apos;matthewdale&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-2930&quot; title=&quot;Allow setting batch size on change stream cursor&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-2930&quot;&gt;&lt;del&gt;GODRIVER-2930&lt;/del&gt;&lt;/a&gt; Allow setting batch size for subsequent getMore&apos;s on a ChangeStream. (#1342)&lt;br/&gt;
Branch: release/1.11&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/c7b372f9f4220a4bad43cc026392fe047813ee1e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/c7b372f9f4220a4bad43cc026392fe047813ee1e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5608532" author="xgen-internal-githook" created="Wed, 2 Aug 2023 19:09:45 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Matt Dale&apos;, &apos;email&apos;: &apos;9760375+matthewdale@users.noreply.github.com&apos;, &apos;username&apos;: &apos;matthewdale&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-2930&quot; title=&quot;Allow setting batch size on change stream cursor&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-2930&quot;&gt;&lt;del&gt;GODRIVER-2930&lt;/del&gt;&lt;/a&gt; Allow setting batch size for subsequent getMore&apos;s on a ChangeStream. (#1342)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/3efbd23a061a4069af96e56b894f4f72bcd51999&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/3efbd23a061a4069af96e56b894f4f72bcd51999&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5608350" author="JIRAUSER1259527" created="Wed, 2 Aug 2023 18:09:50 +0000"  >&lt;p&gt;PR: &lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/pull/1342&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/pull/1342&lt;/a&gt;&lt;/p&gt;</comment>
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