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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-33992] Mobile SE: Test validate functionality is doing the right thing</title>
                <link>https://jira.mongodb.org/browse/SERVER-33992</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Validate for Mobile SE is not tested yet. It might not be doing the right thing.&lt;br/&gt;
Implementation of validate() also depends on how the size Storer gets implemented.&lt;/p&gt;

&lt;p&gt;This ticket tracks work needed to check if validate is actually finding corruption, and implementing as per size Storer&apos;s implementation.&lt;/p&gt;

&lt;p&gt;Also make sure that validate() gets retried if SQLite returns a busy error.&lt;/p&gt;</description>
                <environment></environment>
        <key id="513669">SERVER-33992</key>
            <summary>Mobile SE: Test validate functionality is doing the right thing</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="13202">Works as Designed</resolution>
                                        <assignee username="sulabh.mahajan@mongodb.com">Sulabh Mahajan</assignee>
                                    <reporter username="sulabh.mahajan@mongodb.com">Sulabh Mahajan</reporter>
                        <labels>
                            <label>nonnyc</label>
                            <label>storage-engines</label>
                    </labels>
                <created>Mon, 19 Mar 2018 23:52:57 +0000</created>
                <updated>Fri, 27 Oct 2023 13:53:55 +0000</updated>
                            <resolved>Wed, 11 Jul 2018 06:12:27 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1943949" author="sulabh.mahajan" created="Wed, 11 Jul 2018 06:12:11 +0000"  >&lt;p&gt;I do not see any tests being impacted by validate() functionality anymore.&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36062&quot; title=&quot;Mobile SE: Stop running parallel and concurrent suites on mobile variants&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36062&quot;&gt;&lt;del&gt;SERVER-36062&lt;/del&gt;&lt;/a&gt; will stop running parallel and parallel-compatibility and &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35473&quot; title=&quot;Mobile SE: Fix writeConflictRetry loop with map-reduce jstests&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35473&quot;&gt;&lt;del&gt;SERVER-35473&lt;/del&gt;&lt;/a&gt; will take care of concurrency and concurrency_simultaneous once mapreduce issue is resolved.&lt;/p&gt;

&lt;p&gt;Marking this ticket closed as all tasks tracked by this ticket are complete.&lt;/p&gt;</comment>
                            <comment id="1943924" author="sulabh.mahajan" created="Wed, 11 Jul 2018 03:57:54 +0000"  >&lt;p&gt;I verified and validate() is doing the following:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Iterate over the collection/index and verify if the number of records and size of data cached tallies with what is in the database&lt;/li&gt;
	&lt;li&gt;If full validate is performed, SQLite&apos;s &lt;tt&gt;PRAGMA integrity_check&lt;/tt&gt; is run over the whole database.&lt;br/&gt;
I discussed with the team and we think we would like to keep the  sizeStorer as it is today. With that validate doesn&apos;t need more improvements.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Another point to consider is if we want to retry validate if a write conflict is encountered. I checked what WiredTiger is doing and it doesn&apos;t retry today. Validate in SQLite only does reads, so ideally shouldn&apos;t even get a database locked issue that translates to write conflict. I intend to keep the behaviour consistent with WiredTiger here.&lt;/p&gt;

&lt;p&gt;Effectively that means as far as implementation is concerned validate() seems to be doing the right thing and doesn&apos;t need any changes.&lt;/p&gt;</comment>
                            <comment id="1925785" author="sulabh.mahajan" created="Wed, 20 Jun 2018 05:49:30 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32993&quot; title=&quot;Mobile SE: Data inconsistencies with concurrent operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32993&quot;&gt;&lt;del&gt;SERVER-32993&lt;/del&gt;&lt;/a&gt; was filed for disabling concurrency and concurrency_simultaneous suites. Validate() functionality prevents successful running of a few tests in those suites. Once validate is implemented, re-enable those tests and the ones tagged &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32993&quot; title=&quot;Mobile SE: Data inconsistencies with concurrent operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32993&quot;&gt;&lt;del&gt;SERVER-32993&lt;/del&gt;&lt;/a&gt;&quot;.&lt;/p&gt;</comment>
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