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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-20650] Backport MongoRocks changes to 3.0</title>
                <link>https://jira.mongodb.org/browse/SERVER-20650</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Hey Ramon,&lt;/p&gt;

&lt;p&gt;I have a couple of more changes from our private 3.0 branch that I&apos;d like to merge into public v3.0. Here&apos;s the branch with the commit: &lt;a href=&quot;https://github.com/mongodb-partners/mongo/commits/v3.0-backport&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb-partners/mongo/commits/v3.0-backport&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;This is probably one of the last changes on 3.0 branch as we moved all our development to 3.2 branch and mongo-rocks repo. We&apos;re keeping 3.0 stable.&lt;/p&gt;

&lt;p&gt;Thanks!&lt;br/&gt;
Igor&lt;/p&gt;</description>
                <environment></environment>
        <key id="231614">SERVER-20650</key>
            <summary>Backport MongoRocks changes to 3.0</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="9">Done</resolution>
                                        <assignee username="ramon.fernandez@mongodb.com">Ramon Fernandez Marina</assignee>
                                    <reporter username="igor">Igor Canadi</reporter>
                        <labels>
                    </labels>
                <created>Fri, 25 Sep 2015 19:26:20 +0000</created>
                <updated>Thu, 10 Dec 2015 23:30:44 +0000</updated>
                            <resolved>Thu, 22 Oct 2015 18:27:39 +0000</resolved>
                                                    <fixVersion>3.0.8</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1068152" author="xgen-internal-githook" created="Thu, 22 Oct 2015 18:27:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;igorcanadi&apos;, u&apos;name&apos;: u&apos;Igor Canadi&apos;, u&apos;email&apos;: u&apos;icanadi@fb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20650&quot; title=&quot;Backport MongoRocks changes to 3.0&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20650&quot;&gt;&lt;del&gt;SERVER-20650&lt;/del&gt;&lt;/a&gt; backport recent changes from MongoRocks&lt;/p&gt;

&lt;p&gt;This patch includes the following changes:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Don&apos;t lazily initialize _writeBatch&lt;/li&gt;
	&lt;li&gt;Abandon snapshots in commitAndRestart()&lt;/li&gt;
	&lt;li&gt;Use only 33% of RAM for MongoRocks block cache&lt;/li&gt;
	&lt;li&gt;Decrease block cache shard count to 2^6 from 2^7&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18844&quot; title=&quot;Reacquire the snapshot after commit/abort&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18844&quot;&gt;&lt;del&gt;SERVER-18844&lt;/del&gt;&lt;/a&gt; Refresh iterators on commit()&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-17062&quot; title=&quot;Make query execution robust to WriteConflictException&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-17062&quot;&gt;&lt;del&gt;SERVER-17062&lt;/del&gt;&lt;/a&gt; Allow cursors over unique indexes with duplicates&lt;/li&gt;
	&lt;li&gt;Recompute dataSize and numRecords if numbers don&apos;t make sense&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Signed-off-by: Ramon Fernandez &amp;lt;ramon@mongodb.com&amp;gt;&lt;br/&gt;
Branch: v3.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2a4e6cd054ad8b1d3c54ca73fc6d852116eb89c5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2a4e6cd054ad8b1d3c54ca73fc6d852116eb89c5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1063612" author="igor" created="Sat, 17 Oct 2015 19:36:03 +0000"  >&lt;p&gt;Ah, sorry, I did something wrong &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/sad.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt; &lt;/p&gt;

&lt;p&gt;I fixed the build (tried to compile this time) and rebased on 3.0.7 &amp;#8211; &lt;a href=&quot;https://github.com/mongodb-partners/mongo/commits/v3.0-backport&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb-partners/mongo/commits/v3.0-backport&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Thanks a lot!&lt;/p&gt;</comment>
                            <comment id="1063142" author="ramon.fernandez" created="Fri, 16 Oct 2015 18:43:47 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=igor&quot; class=&quot;user-hover&quot; rel=&quot;igor&quot;&gt;igor&lt;/a&gt;, I&apos;m getting a compile error when building this patch:&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;$ scons -j12 --cpppath=$(readlink -f ../rocksdb/include/) --libpath=$(readlink -f ../rocksdb/) --extralib=rocksdb --rocksdb mongod&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;...&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;g++ -o build/linux2/normal/mongo/db/storage/rocks/rocks_util.o -c -Wnon-virtual-dtor -Woverloaded-virtual -std=c++11 -fPIC -fno-strict-aliasing -ggdb -pthread -Wall -Wsign-compare -Wno-unknown-pragmas -Winvalid-pch -pipe -Werror -O3 -Wno-unused-local-typedefs -Wno-unused-function -Wno-deprecated-declarations -Wno-unused-but-set-variable -Wno-missing-braces -fno-builtin-memcmp -DBOOST_ALL_NO_LIB -D_SCONS -DMONGO_EXPOSE_MACROS -DPCRE_STATIC -DSUPPORT_UTF8 -DMONGO_OPTIMIZED_BUILD -DMONGO_BYTE_ORDER=1234 -D_FILE_OFFSET_BITS=64 -DMONGO_HAVE___THREAD -DMONGO_HAVE_CXX11_ATOMICS -DBOOST_SYSTEM_NO_DEPRECATED -DMONGO_HAVE_HEADER_UNISTD_H -DMONGO_HAVE_POSIX_MONOTONIC_CLOCK -DMONGO_HAVE_EXECINFO_BACKTRACE -Isrc/third_party/s2 -Isrc/third_party/pcre-8.37 -Isrc/third_party/boost -I/home/rf/cm/rocksdb/include -Ibuild/linux2/normal -Isrc src/mongo/db/storage/rocks/rocks_util.cpp&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;src/mongo/db/storage/rocks/rocks_engine.cpp: In member function &apos;rocksdb::Options mongo::RocksEngine::_options() const&apos;:&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;src/mongo/db/storage/rocks/rocks_engine.cpp:516:13: error: &apos;struct rocksdb::Options&apos; has no member named &apos;optimize_filter_for_hits&apos;&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;     options.optimize_filter_for_hits = true;&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;             ^&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;Creating &apos;build/linux2/normal/mongo/util/version.cpp&apos;&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;scons: *** [build/linux2/normal/mongo/db/storage/rocks/rocks_engine.o] Error 1&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;scons: building terminated because of errors.&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;Am I doing something wrong?&lt;/p&gt;</comment>
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