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<channel>
    <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-25734] Deadlock between the balancer and step-up/stepdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-25734</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Seen in &lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_mongo_master_enterprise_rhel_62_64_bit_sharding_csrs_continuous_config_stepdown_WT_0b1cb011c860aa8c68714d4370c30417009993ed_16_08_22_15_13_31&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;my patch build&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Balancer is running, trying to take a distributed lock, which does a local write and thus tries to take a database lock.  It can&apos;t take the database lock because another thread is trying to make the process stepdown (which holds a global lock), but stepdown is blocked trying to stop the balancer.  Deadlock.&lt;/p&gt;

&lt;p&gt;Stepdown thread:&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;
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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; [2016/08/22 16:01:27.163] Thread 2443 (Thread 0x7f0081552700 (LWP 12463)):&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.163] #0  0x00007f00beb0e334 in __lll_lock_wait () from /lib64/libpthread.so.0&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.163] #1  0x00007f00beb095d8 in _L_lock_854 () from /lib64/libpthread.so.0&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.163] #2  0x00007f00beb094a7 in pthread_mutex_lock () from /lib64/libpthread.so.0&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.164] #3  0x00007f00c2951612 in mongo::MigrationManager::interruptAndDisableMigrations() ()&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; [2016/08/22 16:01:27.164] #4  0x00007f00c292381c in mongo::Balancer::stopThread() ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.164] #5  0x00007f00c25e5525 in mongo::repl::ReplicationCoordinatorExternalStateImpl::shardingOnStepDownHook() ()&lt;/span&gt;&lt;/pre&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.164] #6  0x00007f00c2605411 in mongo::repl::ReplicationCoordinatorImpl::_performPostMemberStateUpdateAction(mongo::repl::ReplicationCoordinatorImpl::PostMemberStateUpdateAction) ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.164] #7  0x00007f00c2606ebe in mongo::repl::ReplicationCoordinatorImpl::_stepDownContinue(mongo::executor::TaskExecutor::EventHandle, mongo::OperationContext*, mongo::Date_t, mongo::Date_t, bool, bool, mongo::Status*) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.164] #8  0x00007f00c2607374 in mongo::repl::ReplicationCoordinatorImpl::stepDown_nonBlocking(mongo::OperationContext*, bool, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;gt; const&amp;amp;, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;gt; const&amp;amp;, mongo::Status*) ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.164] #9  0x00007f00c260767a in mongo::repl::ReplicationCoordinatorImpl::stepDown(mongo::OperationContext*, bool, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;gt; const&amp;amp;, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;gt; const&amp;amp;) ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.164] #10 0x00007f00c2638226 in mongo::repl::CmdReplSetStepDown::run(mongo::OperationContext*, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, mongo::BSONObj&amp;amp;, int, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt;&amp;amp;, mongo::BSONObjBuilder&amp;amp;) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.165] #11 0x00007f00c1fea5a4 in mongo::Command::run(mongo::OperationContext*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.165] #12 0x00007f00c1febc11 in mongo::Command::execCommand(mongo::OperationContext*, mongo::Command*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.165] #13 0x00007f00c269b64d in mongo::runCommands(mongo::OperationContext*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.165] #14 0x00007f00c220187b in mongo::assembleResponse(mongo::OperationContext*, mongo::Message&amp;amp;, mongo::DbResponse&amp;amp;, mongo::HostAndPort const&amp;amp;) ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.165] #15 0x00007f00c1e16b4e in mongo::ServiceEntryPointMongod::_sessionLoop(mongo::transport::Session*) ()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.165] #16 0x00007f00c2ad78ab in mongo::(anonymous namespace)::runFunc(void*) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.165] #17 0x00007f00beb07aa1 in start_thread () from /lib64/libpthread.so.0&lt;/span&gt;&lt;/pre&gt;
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					&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; [2016/08/22 16:01:27.165] #18 0x00007f00be854aad in clone () from /lib64/libc.so.6&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;Balancer thread:&lt;/p&gt;
&lt;p/&gt;
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&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; [2016/08/22 16:01:27.145] Thread 2455 (Thread 0x7f0083661700 (LWP 29868)):&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.145] #0  0x00007f00beb0ba5e in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.145] #1  0x00007f00c20ba298 in mongo::CondVarLockGrantNotification::wait(unsigned int) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.146] #2  0x00007f00c20bf2a6 in mongo::LockerImpl&amp;lt;false&amp;gt;::lockComplete(mongo::ResourceId, mongo::LockMode, unsigned int, bool) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.146] #3  0x00007f00c20aed19 in mongo::Lock::GlobalLock::waitForLock(unsigned int) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.146] #4  0x00007f00c20af225 in mongo::Lock::GlobalLock::GlobalLock(mongo::Locker*, mongo::LockMode, unsigned int) ()&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.146] #5  0x00007f00c20af2a7 in mongo::Lock::DBLock::DBLock(mongo::Locker*, mongo::StringData, mongo::LockMode) ()&lt;/span&gt;&lt;/pre&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: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; [2016/08/22 16:01:27.146] #6  0x00007f00c20d2057 in mongo::AutoGetOrCreateDb::AutoGetOrCreateDb(mongo::OperationContext*, mongo::StringData, mongo::LockMode) ()&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; [2016/08/22 16:01:27.146] #7  0x00007f00c200bcfd in mongo::CmdFindAndModify::run(mongo::OperationContext*, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, mongo::BSONObj&amp;amp;, int, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt;&amp;amp;, mongo::BSONObjBuilder&amp;amp;) ()&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; [2016/08/22 16:01:27.146] #8  0x00007f00c1fea7a8 in mongo::Command::run(mongo::OperationContext*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&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; [2016/08/22 16:01:27.146] #9  0x00007f00c1febc11 in mongo::Command::execCommand(mongo::OperationContext*, mongo::Command*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&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; [2016/08/22 16:01:27.146] #10 0x00007f00c269b64d in mongo::runCommands(mongo::OperationContext*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&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; [2016/08/22 16:01:27.147] #11 0x00007f00c21ff332 in mongo::(anonymous namespace)::receivedCommand ()&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; [2016/08/22 16:01:27.147] #12 0x00007f00c2201306 in mongo::assembleResponse(mongo::OperationContext*, mongo::Message&amp;amp;, mongo::DbResponse&amp;amp;, mongo::HostAndPort const&amp;amp;) ()&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; [2016/08/22 16:01:27.147] #13 0x00007f00c20d36bf in mongo::DBDirectClient::call(mongo::Message&amp;amp;, mongo::Message&amp;amp;, bool, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;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; [2016/08/22 16:01:27.147] #14 0x00007f00c1e835cc in mongo::DBClientWithCommands::runCommandWithMetadata(mongo::StringData, mongo::StringData, mongo::BSONObj const&amp;amp;, mongo::BSONObj const&amp;amp;) ()&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; [2016/08/22 16:01:27.147] #15 0x00007f00c29e9a3b in mongo::ShardLocal::_runCommand(mongo::OperationContext*, mongo::ReadPreferenceSetting const&amp;amp;, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;gt;, mongo::BSONObj const&amp;amp;) ()&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; [2016/08/22 16:01:27.147] #16 0x00007f00c29e0193 in mongo::Shard::runCommand(mongo::OperationContext*, mongo::ReadPreferenceSetting const&amp;amp;, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, mongo::BSONObj const&amp;amp;, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;gt;, mongo::Shard::RetryPolicy) ()&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; [2016/08/22 16:01:27.147] #17 0x00007f00c296b7b2 in mongo::DistLockCatalogImpl::grabLock(mongo::OperationContext*, mongo::StringData, mongo::OID const&amp;amp;, mongo::StringData, mongo::StringData, mongo::Date_t, mongo::StringData) ()&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; [2016/08/22 16:01:27.147] #18 0x00007f00c2971177 in mongo::ReplSetDistLockManager::lockWithSessionID(mongo::OperationContext*, mongo::StringData, mongo::StringData, mongo::OID, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;gt;, mongo::Duration&amp;lt;std::ratio&amp;lt;1l, 1000l&amp;gt; &amp;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; [2016/08/22 16:01:27.148] #19 0x00007f00c29531c0 in mongo::MigrationManager::_scheduleWithDistLock_inlock(mongo::OperationContext*, mongo::HostAndPort const&amp;amp;, mongo::MigrationManager::Migration) ()&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; [2016/08/22 16:01:27.148] #20 0x00007f00c2955833 in mongo::MigrationManager::_schedule(mongo::OperationContext*, mongo::MigrateInfo const&amp;amp;, bool, unsigned long, mongo::MigrationSecondaryThrottleOptions const&amp;amp;, bool) ()&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; [2016/08/22 16:01:27.148] #21 0x00007f00c2955ef9 in mongo::MigrationManager::executeManualMigration(mongo::OperationContext*, mongo::MigrateInfo const&amp;amp;, unsigned long, mongo::MigrationSecondaryThrottleOptions const&amp;amp;, bool) ()&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; [2016/08/22 16:01:27.148] #22 0x00007f00c2925984 in mongo::Balancer::moveSingleChunk(mongo::OperationContext*, mongo::ChunkType const&amp;amp;, mongo::ShardId const&amp;amp;, unsigned long, mongo::MigrationSecondaryThrottleOptions const&amp;amp;, bool) ()&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; [2016/08/22 16:01:27.148] #23 0x00007f00c26bd562 in mongo::(anonymous namespace)::ConfigSvrMoveChunkCommand::run(mongo::OperationContext*, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt; const&amp;amp;, mongo::BSONObj&amp;amp;, int, std::__cxx11::basic_string&amp;lt;char, std::char_traits&amp;lt;char&amp;gt;, std::allocator&amp;lt;char&amp;gt; &amp;gt;&amp;amp;, mongo::BSONObjBuilder&amp;amp;) ()&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; [2016/08/22 16:01:27.148] #24 0x00007f00c1fea5a4 in mongo::Command::run(mongo::OperationContext*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&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; [2016/08/22 16:01:27.148] #25 0x00007f00c1febc11 in mongo::Command::execCommand(mongo::OperationContext*, mongo::Command*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&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; [2016/08/22 16:01:27.148] #26 0x00007f00c269b64d in mongo::runCommands(mongo::OperationContext*, mongo::rpc::RequestInterface const&amp;amp;, mongo::rpc::ReplyBuilderInterface*) ()&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; [2016/08/22 16:01:27.148] #27 0x00007f00c220187b in mongo::assembleResponse(mongo::OperationContext*, mongo::Message&amp;amp;, mongo::DbResponse&amp;amp;, mongo::HostAndPort const&amp;amp;) ()&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; [2016/08/22 16:01:27.149] #28 0x00007f00c1e16b4e in mongo::ServiceEntryPointMongod::_sessionLoop(mongo::transport::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; [2016/08/22 16:01:27.149] #29 0x00007f00c2ad78ab in mongo::(anonymous namespace)::runFunc(void*) ()&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; [2016/08/22 16:01:27.149] #30 0x00007f00beb07aa1 in start_thread () from /lib64/libpthread.so.0&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; [2016/08/22 16:01:27.149] #31 0x00007f00be854aad in clone () from /lib64/libc.so.6&lt;/span&gt;&lt;/pre&gt;
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			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="310938">SERVER-25734</key>
            <summary>Deadlock between the balancer and step-up/stepdown</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="9">Done</resolution>
                                        <assignee username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                    </labels>
                <created>Mon, 22 Aug 2016 20:24:08 +0000</created>
                <updated>Sat, 19 Nov 2016 00:06:18 +0000</updated>
                            <resolved>Thu, 15 Sep 2016 02:34:10 +0000</resolved>
                                    <version>3.3.12</version>
                                    <fixVersion>3.3.14</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1384962" author="kaloian.manassiev" created="Thu, 15 Sep 2016 02:33:50 +0000"  >&lt;p&gt;The deadlock on step down is gone away as a side effect of this commit, which removes interrupting the balancer on step down: &lt;a href=&quot;https://github.com/mongodb/mongo/commit/3596a4fb09b31c955d95fbe17db0492589c96f03&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3596a4fb09b31c955d95fbe17db0492589c96f03&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1381166" author="xgen-internal-githook" created="Sat, 10 Sep 2016 16:21:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;kaloianm&apos;, u&apos;name&apos;: u&apos;Kaloian Manassiev&apos;, u&apos;email&apos;: u&apos;kaloian.manassiev@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25734&quot; title=&quot;Deadlock between the balancer and step-up/stepdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25734&quot;&gt;&lt;del&gt;SERVER-25734&lt;/del&gt;&lt;/a&gt; Add a drain mode completion hook which runs outside of the global X lock&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8eea87b6b90499d526e085ba723ddf989b837994&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8eea87b6b90499d526e085ba723ddf989b837994&lt;/a&gt;&lt;/p&gt;</comment>
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