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    <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-52903] Add an upper bound for how long a tenant migration donor can block operations</title>
                <link>https://jira.mongodb.org/browse/SERVER-52903</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We decided at the 6 week review that the donor should bound how long it blocks operations.&lt;/p&gt;

&lt;p&gt;This is useful in general to limit the impact of a tenant migration on a user workload, but in particular is useful in case the donor starts blocking very soon after writing a commitIndexBuild oplog entry. This is because the recipient will not start building the index until seeing commitIndexBuild in the oplog; will not report that it has majority-committed the commitIndexBuild oplog entry until finishing building the index; and building the index can take a long time (hours).&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=suganthi.mani&quot; class=&quot;user-hover&quot; rel=&quot;suganthi.mani&quot;&gt;suganthi.mani&lt;/a&gt; or &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=matthew.russotto&quot; class=&quot;user-hover&quot; rel=&quot;matthew.russotto&quot;&gt;matthew.russotto&lt;/a&gt; , could you confirm that this is the plan for how the recipient will handle two-phase index builds?&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=evin.roesle&quot; class=&quot;user-hover&quot; rel=&quot;evin.roesle&quot;&gt;evin.roesle&lt;/a&gt;, could you propose a default upper bound for how long the donor should block operations? The upper bound should be settable via a server parameter.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1543688">SERVER-52903</key>
            <summary>Add an upper bound for how long a tenant migration donor can block operations</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="andrew.shuvalov@mongodb.com">Andrew Shuvalov</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                            <label>pm-1791_non-cloud-blocking</label>
                            <label>pm-1791_other_required</label>
                    </labels>
                <created>Tue, 17 Nov 2020 03:19:09 +0000</created>
                <updated>Sun, 29 Oct 2023 22:00:20 +0000</updated>
                            <resolved>Thu, 14 Jan 2021 19:36:11 +0000</resolved>
                                                    <fixVersion>4.9.0-alpha0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="3565714" author="xgen-internal-githook" created="Thu, 14 Jan 2021 19:19:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Andrew Shuvalov&apos;, &apos;email&apos;: &apos;andrew.shuvalov@mongodb.com&apos;, &apos;username&apos;: &apos;shuvalov-mdb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-52903&quot; title=&quot;Add an upper bound for how long a tenant migration donor can block operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-52903&quot;&gt;&lt;del&gt;SERVER-52903&lt;/del&gt;&lt;/a&gt;: Add an upper bound for how long a tenant migration donor can block operations&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a102bde490e4f63a5558551f31e3c834edeb4dd6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a102bde490e4f63a5558551f31e3c834edeb4dd6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3533653" author="JIRAUSER1256988" created="Wed, 16 Dec 2020 23:23:49 +0000"  >&lt;p&gt;I changed it back to open and will return to this ticket later, working on something else. If you think this is not needed, you have time to tell me.&lt;/p&gt;</comment>
                            <comment id="3531550" author="lingzhi.deng" created="Tue, 15 Dec 2020 23:24:12 +0000"  >&lt;p&gt;I don&apos;t think we need to block this ticket. Sugnathi&apos;s proposal of blocking index builds probably makes this less necessary. But it is still a good idea to have some upper bound on the critical section. We should still do the ticket as a safety valve, regardless of how we handle index build. &lt;/p&gt;</comment>
                            <comment id="3519948" author="JIRAUSER1256988" created="Tue, 8 Dec 2020 02:00:55 +0000"  >&lt;p&gt;Ok, thanks &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=suganthi.mani&quot; class=&quot;user-hover&quot; rel=&quot;suganthi.mani&quot;&gt;suganthi.mani&lt;/a&gt; for heads up. I have it mostly done but I can hold.&lt;/p&gt;</comment>
                            <comment id="3519942" author="suganthi.mani" created="Tue, 8 Dec 2020 01:50:17 +0000"  >&lt;p&gt;FYI, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=andrew.shuvalov&quot; class=&quot;user-hover&quot; rel=&quot;andrew.shuvalov&quot;&gt;andrew.shuvalov&lt;/a&gt; I have discussed some design approaches for handling index builds during tenant migration (see &lt;a href=&quot;https://docs.google.com/document/d/1HekHJt5Dg6ZUGwJTBhgWQSuClPHgpEug3nFaCE9uM40/edit?usp=sharing&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;). If we plan to go by option#3, we might not need this ticket fix for index build issue. But, this ticket might still be helpful to handle any unforeseen reasons.&lt;/p&gt;</comment>
                            <comment id="3493653" author="matthew.russotto" created="Tue, 17 Nov 2020 15:15:06 +0000"  >&lt;p&gt;That&apos;s correct; furthermore, oplog application on the recipient will be halted while the index builds.&lt;/p&gt;</comment>
                    </comments>
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