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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-34059] DuplicateKeyError aborts transaction</title>
                <link>https://jira.mongodb.org/browse/SERVER-34059</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I&apos;m trying to test how drivers will handle error cases within multi-statement transactions. I perform the following with my prototype of PyMongo that supports transactions:&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;
		&lt;tbody &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-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;session = client.start_session()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;session.start_transaction()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;collection.insert_one({&apos;_id&apos;: 1}, session=session)&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;try:&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    collection.insert_one({&apos;_id&apos;: 1}, session=session)&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;except Exception as exc:&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    print(exc)&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;collection.insert_one({&apos;_id&apos;: 1}, session=session)&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;session.commit_transaction()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;It appears (based on debugging) that the transaction includes the document {_id: 1} after the first insert, and the second insert not only causes a duplicate key error, it also aborts the transaction. Therefore the third insert succeeds (outside of any transaction), and the commit_transaction fails with code 125, errmsg &quot;Transaction isn&apos;t in progress.&quot;&lt;/p&gt;</description>
                <environment></environment>
        <key id="514832">SERVER-34059</key>
            <summary>DuplicateKeyError aborts transaction</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Thu, 22 Mar 2018 01:23:52 +0000</created>
                <updated>Tue, 6 Dec 2022 03:34:28 +0000</updated>
                            <resolved>Tue, 19 Jun 2018 18:24:49 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>18</watches>
                                                                                                                <comments>
                            <comment id="1925278" author="greg.mckeon" created="Tue, 19 Jun 2018 18:24:49 +0000"  >&lt;p&gt;This is currently not possible to fix in the storage engine.&lt;/p&gt;</comment>
                            <comment id="1845829" author="jesse" created="Mon, 26 Mar 2018 21:23:16 +0000"  >&lt;p&gt;I&apos;ve opened &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-11493&quot; title=&quot;Document which errors abort transactions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-11493&quot;&gt;&lt;del&gt;DOCS-11493&lt;/del&gt;&lt;/a&gt; to at least write down all the errors that abort a transaction.&lt;/p&gt;</comment>
                            <comment id="1843899" author="siyuan.zhou@10gen.com" created="Fri, 23 Mar 2018 20:39:33 +0000"  >&lt;p&gt;I had a patch last night to allow DuplicatedKey error, but it turns out we cannot.&lt;/p&gt;

&lt;p&gt;DuplicatedKey error is checked as a part of a WUOW after the data write, the convention is to uassert and abort the WT transaction. If we keep the WT transaction and reuse it, the document will be preserved in the data table. DuplicatedKey error is just one example. Any index constraints will result in the same issue, e.g. inserting unexpected location format into geo index.&lt;/p&gt;</comment>
                            <comment id="1843316" author="spencer" created="Fri, 23 Mar 2018 15:22:43 +0000"  >&lt;p&gt;The latter issue about the third write being performed outside the transaction will be fixed by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34051&quot; title=&quot;Require autocommit:false on all operations as part of an ongoing transaction&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34051&quot;&gt;&lt;del&gt;SERVER-34051&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1843312" author="spencer" created="Fri, 23 Mar 2018 15:20:54 +0000"  >&lt;p&gt;This is related to the work on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33432&quot; title=&quot;Implicit transaction abort&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33432&quot;&gt;&lt;del&gt;SERVER-33432&lt;/del&gt;&lt;/a&gt;, and can probably be completed concurrently to it.  We should have a set of error codes that cause implicit transaction abort, and otherwise we should leave the transaction in place.&lt;/p&gt;</comment>
                            <comment id="1842230" author="jesse" created="Thu, 22 Mar 2018 17:11:47 +0000"  >&lt;p&gt;It&apos;s from a server behavior. The driver appears to be doing the right thing: same lsid and txnNumber as the previous inserts, and a stmtId that is one greater. The server has forgotten about the transaction, though, so I guess it thinks this is a retryable write, and it succeeds.&lt;/p&gt;</comment>
                            <comment id="1841761" author="schwerin" created="Thu, 22 Mar 2018 13:05:21 +0000"  >&lt;p&gt;It&apos;s also worrisome that the server thought the third insert was outside a transaction. Is that from a server or driver behavior?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="500850">SERVER-33432</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="514676">SERVER-34051</issuekey>
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