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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>
    </build-info>


<item>
            <title>[SERVER-57483] Results from $lookup stage are not cached for a resharding operation&apos;s sub-pipeline</title>
                <link>https://jira.mongodb.org/browse/SERVER-57483</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/a2f2a57609308271b2fce1cab9bbf7f08a5eda18/src/mongo/db/pipeline/document_source_lookup.cpp#L453&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;DocumentSourceLookUp::buildPipeline() calls ShardServerProcessInterface::attachCursorSourceToPipeline()&lt;/a&gt; which &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a2f2a57609308271b2fce1cab9bbf7f08a5eda18/src/mongo/db/pipeline/process_interface/shardsvr_process_interface.cpp#L385&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;calls sharded_agg_helpers::attachCursorToPipeline()&lt;/a&gt; and always &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a2f2a57609308271b2fce1cab9bbf7f08a5eda18/src/mongo/db/pipeline/sharded_agg_helpers.cpp#L1267&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;serializes and re&amp;#45;parses&lt;/a&gt;, even when the pipeline may execute locally on the shard via ShardServerProcessInterface::attachCursorSourceToPipelineForLocalRead().&lt;/p&gt;

&lt;p&gt;Because &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a2f2a57609308271b2fce1cab9bbf7f08a5eda18/src/mongo/db/pipeline/document_source_sequential_document_cache.cpp#L166&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the $sequentialCache stage omits itself from the serialized pipeline&lt;/a&gt;, the parsed pipeline which executes locally on the shard won&apos;t ever use the cache.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1770121">SERVER-57483</key>
            <summary>Results from $lookup stage are not cached for a resharding operation&apos;s sub-pipeline</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="max.hirschhorn@mongodb.com">Max Hirschhorn</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>PM-234-M3</label>
                            <label>PM-234-T-data-clone</label>
                            <label>post-rc0</label>
                    </labels>
                <created>Mon, 7 Jun 2021 03:11:30 +0000</created>
                <updated>Sun, 29 Oct 2023 21:52:33 +0000</updated>
                            <resolved>Thu, 10 Jun 2021 11:18:23 +0000</resolved>
                                                    <fixVersion>5.0.0-rc2</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="4107492" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:28:04 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3878314" author="max.hirschhorn@10gen.com" created="Tue, 15 Jun 2021 13:47:14 +0000"  >&lt;p&gt;Note for posterity: &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=ted.tuckman&quot; class=&quot;user-hover&quot; rel=&quot;ted.tuckman&quot;&gt;ted.tuckman&lt;/a&gt;, pointed out that &lt;a href=&quot;https://github.com/mongodb/mongo/blob/91ce36557dc90c85544791a47f880509ada6469e/src/mongo/db/s/resharding/resharding_collection_cloner.cpp#L171-L175&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the $match stages in the ReshardingCollectionCloner&apos;s $lookup pipeline&lt;/a&gt; are being coalesced from the call to Pipeline::optimizePipeline() and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/91ce36557dc90c85544791a47f880509ada6469e/src/mongo/db/pipeline/document_source_sequential_document_cache.cpp#L134-L140&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;causing the $sequentialCache to be removed&lt;/a&gt; (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57705&quot; title=&quot;DocumentSourceSequentialCache can wind up in a suboptimal location due to optimizations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57705&quot;&gt;SERVER-57705&lt;/a&gt;). I hadn&apos;t noticed this in my performance testing because I had also been including my changes for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57668&quot; title=&quot;Cache chunk bounds as an array in resharding collection cloning pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57668&quot;&gt;&lt;del&gt;SERVER-57668&lt;/del&gt;&lt;/a&gt; along with my changes for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57483&quot; title=&quot;Results from $lookup stage are not cached for a resharding operation&amp;#39;s sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57483&quot;&gt;&lt;del&gt;SERVER-57483&lt;/del&gt;&lt;/a&gt;. The projection stage between the two $match stages prevents the $match stages from being coalesced and therefore preserves the $sequentialCache stage.&lt;/p&gt;</comment>
                            <comment id="3870124" author="xgen-internal-githook" created="Thu, 10 Jun 2021 05:43:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;, &apos;username&apos;: &apos;visemet&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57483&quot; title=&quot;Results from $lookup stage are not cached for a resharding operation&amp;#39;s sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57483&quot;&gt;&lt;del&gt;SERVER-57483&lt;/del&gt;&lt;/a&gt; Fix caching $lookup results for config.cache.chunks.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 0c046b785bd8d48114f627e105c7215e4734c6db)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4da58947c643ada0596061ceeb8d1a63b6faeb0d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4da58947c643ada0596061ceeb8d1a63b6faeb0d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3870000" author="xgen-internal-githook" created="Thu, 10 Jun 2021 01:25:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Max Hirschhorn&apos;, &apos;email&apos;: &apos;max.hirschhorn@mongodb.com&apos;, &apos;username&apos;: &apos;visemet&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57483&quot; title=&quot;Results from $lookup stage are not cached for a resharding operation&amp;#39;s sub-pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57483&quot;&gt;&lt;del&gt;SERVER-57483&lt;/del&gt;&lt;/a&gt; Fix caching $lookup results for config.cache.chunks.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0c046b785bd8d48114f627e105c7215e4734c6db&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0c046b785bd8d48114f627e105c7215e4734c6db&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3868934" author="charlie.swanson" created="Wed, 9 Jun 2021 16:27:24 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=max.hirschhorn&quot; class=&quot;user-hover&quot; rel=&quot;max.hirschhorn&quot;&gt;max.hirschhorn&lt;/a&gt; we discussed you sending us a CR for a patch which is similar to what you outlined in your comment, so I&apos;m assigning this to you. I filed &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57579&quot; title=&quot;DocumentSourceSequentialCache doesn&amp;#39;t clone, ruining non-correlated $lookup pipeline caching in sharded deployments&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57579&quot;&gt;&lt;del&gt;SERVER-57579&lt;/del&gt;&lt;/a&gt; for the follow-up work that we can handle as a more permanent fix. &lt;/p&gt;</comment>
                            <comment id="3861695" author="max.hirschhorn@10gen.com" created="Mon, 7 Jun 2021 03:11:53 +0000"  >&lt;p&gt;One solution could be to avoid calling Pipeline::clone() when the executes locally on the shard. This wouldn&apos;t help when the server is running with &lt;tt&gt;&amp;#45;&amp;#45;setParameter internalQueryAllowShardedLookup=true&lt;/tt&gt; but that isn&apos;t an officially supported configuration anyhow.&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;diff --git a/src/mongo/db/pipeline/sharded_agg_helpers.cpp b/src/mongo/db/pipeline/sharded_agg_helpers.cpp&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;index cd5d35f992..b3723c1b0d 100644&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: #2B91AF; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;--- a/src/mongo/db/pipeline/sharded_agg_helpers.cpp&lt;/span&gt;&lt;/pre&gt;
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		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: #2B91AF; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+++ b/src/mongo/db/pipeline/sharded_agg_helpers.cpp&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;@@ -1261,16 +1261,19 @@ std::unique_ptr&amp;lt;Pipeline, PipelineDeleter&amp;gt; attachCursorToPipeline(Pipeline* owne&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;     invariant(pipeline-&amp;gt;getSources().empty() ||&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;               !dynamic_cast&amp;lt;DocumentSourceMergeCursors*&amp;gt;(pipeline-&amp;gt;getSources().front().get()));&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+    if (!allowTargetingShards || expCtx-&amp;gt;ns.isLocal() || expCtx-&amp;gt;ns.isConfigDotCacheDotChunks()) {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+        // Use &apos;ownedPipeline&apos; rather than a serialized and re-parsed copy of it when reading from&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+        // the collection locally. This is important because optimizations such as the&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+        // $sequentialCache stage are lost when the pipeline is serialized.&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+        return expCtx-&amp;gt;mongoProcessInterface-&amp;gt;attachCursorSourceToPipelineForLocalRead(&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+            pipeline.release());&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+    }&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;     auto catalogCache = Grid::get(expCtx-&amp;gt;opCtx)-&amp;gt;catalogCache();&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;     return shardVersionRetry(&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;         expCtx-&amp;gt;opCtx, catalogCache, expCtx-&amp;gt;ns, &quot;targeting pipeline to attach cursors&quot;_sd, [&amp;amp;]() {&lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;             auto pipelineToTarget = pipeline-&amp;gt;clone();&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: red; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-            if (allowTargetingShards &amp;amp;&amp;amp; !expCtx-&amp;gt;ns.isConfigDotCacheDotChunks() &amp;amp;&amp;amp;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: red; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-                expCtx-&amp;gt;ns.db() != &quot;local&quot;) {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: red; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-            }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: red; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-            return expCtx-&amp;gt;mongoProcessInterface-&amp;gt;attachCursorSourceToPipelineForLocalRead(&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: red; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-                pipelineToTarget.release());&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;+            return targetShardsAndAddMergeCursors(expCtx, std::move(pipelineToTarget));&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;         });&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: gray; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
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