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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-32677] Segmentation fault converting ReplicaSet to Replicated Shard Cluster</title>
                <link>https://jira.mongodb.org/browse/SERVER-32677</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The starting point are 3 node: 2 data barer and 1 arbitrer. All nodes started without the flag --shardsvr. Once the replicaset is initialized (initialization + addArb) it cannot be converted to a replicated shard.&lt;/p&gt;

&lt;p&gt;Once you restart the node with the flag --shardsvr they, after a while, access a bad memory segment (Invalid access at address: 0x18) and receive signal SIGSEGV.&lt;/p&gt;

&lt;p&gt;If restarted again they continue to receive the same signal after some time in idle (more or less 5 minute)&lt;/p&gt;</description>
                <environment>docker container mongo:3.6.1 (debian jessy)&lt;br/&gt;
&lt;br/&gt;
&lt;a href=&quot;https://github.com/docker-library/mongo/blob/657b1a53a9680b972a6344f3d958a17775dd8719/3.6/Dockerfile&quot;&gt;https://github.com/docker-library/mongo/blob/657b1a53a9680b972a6344f3d958a17775dd8719/3.6/Dockerfile&lt;/a&gt;</environment>
        <key id="482255">SERVER-32677</key>
            <summary>Segmentation fault converting ReplicaSet to Replicated Shard Cluster</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="13201">Fixed</resolution>
                                        <assignee username="blake.oler@mongodb.com">Blake Oler</assignee>
                                    <reporter username="gdecicco">Gianluca De Cicco</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Fri, 12 Jan 2018 11:27:17 +0000</created>
                <updated>Mon, 30 Oct 2023 23:09:21 +0000</updated>
                            <resolved>Fri, 20 Apr 2018 17:36:44 +0000</resolved>
                                    <version>3.6.1</version>
                                    <fixVersion>3.6.4</fixVersion>
                    <fixVersion>3.7.6</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>20</watches>
                                                                                                                <comments>
                            <comment id="1879369" author="xgen-internal-githook" created="Tue, 1 May 2018 17:58:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Prevent sessions periodic refresh from prematurely accessing sharding internals&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 60cb34ea7351d25b0eb6bee947d21ada09cf438b)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1879368" author="xgen-internal-githook" created="Tue, 1 May 2018 17:58:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Fix segmentation fault when converting a replica set to a replicated sharded cluster&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 424111b2a3f4c30b7e637f4eadda6a18df9bf065.&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3df74e4206d910946abf9f1d7e6c281de329bf5e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3df74e4206d910946abf9f1d7e6c281de329bf5e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1879366" author="xgen-internal-githook" created="Tue, 1 May 2018 17:58:24 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Prevent sessions periodic refresh from prematurely accessing sharding internals&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 60cb34ea7351d25b0eb6bee947d21ada09cf438b)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1879365" author="xgen-internal-githook" created="Tue, 1 May 2018 17:58:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Fix segmentation fault when converting a replica set to a replicated sharded cluster&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 424111b2a3f4c30b7e637f4eadda6a18df9bf065.&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3df74e4206d910946abf9f1d7e6c281de329bf5e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3df74e4206d910946abf9f1d7e6c281de329bf5e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1879364" author="xgen-internal-githook" created="Tue, 1 May 2018 17:57:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Prevent sessions periodic refresh from prematurely accessing sharding internals&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 60cb34ea7351d25b0eb6bee947d21ada09cf438b)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1879363" author="xgen-internal-githook" created="Tue, 1 May 2018 17:57:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Fix segmentation fault when converting a replica set to a replicated sharded cluster&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 424111b2a3f4c30b7e637f4eadda6a18df9bf065.&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3df74e4206d910946abf9f1d7e6c281de329bf5e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3df74e4206d910946abf9f1d7e6c281de329bf5e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1879051" author="kaloian.manassiev" created="Tue, 1 May 2018 14:41:49 +0000"  >&lt;p&gt;On the 3.6 branch: &lt;a href=&quot;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9e4b78f198fa6a0bca75fd1012d8437d98a3c825&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1870209" author="xgen-internal-githook" created="Fri, 20 Apr 2018 16:20:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;, &apos;name&apos;: &apos;Blake Oler&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Prevent sessions periodic refresh from prematurely accessing sharding internals&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/60cb34ea7351d25b0eb6bee947d21ada09cf438b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/60cb34ea7351d25b0eb6bee947d21ada09cf438b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1842409" author="greg.mckeon" created="Thu, 22 Mar 2018 18:45:08 +0000"  >&lt;p&gt;Clarifying the confusing state of this ticket:&lt;/p&gt;

&lt;p&gt;The fix for the 3.6 branch has been completed, and is in the 3.6.4 release.&lt;/p&gt;

&lt;p&gt;The fix in master is currently blocked, and this ticket will remain unresolved until the fix in master is pushed.&lt;/p&gt;</comment>
                            <comment id="1818794" author="xgen-internal-githook" created="Wed, 28 Feb 2018 17:25:37 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Fix segmentation fault when converting a replica set to a replicated sharded cluster&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/424111b2a3f4c30b7e637f4eadda6a18df9bf065&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/424111b2a3f4c30b7e637f4eadda6a18df9bf065&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1808577" author="xgen-internal-githook" created="Fri, 16 Feb 2018 21:51:06 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Fix segmentation fault when converting a replica set to a replicated sharded cluster&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit cad0d35091f98b5c2bb37765861841844bd9e16d.&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9586e557d54ef70f9ca4b43c26892cd55257e1a5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9586e557d54ef70f9ca4b43c26892cd55257e1a5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1797101" author="xgen-internal-githook" created="Tue, 6 Feb 2018 18:46:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;blake.oler@mongodb.com&apos;, &apos;name&apos;: &apos;Blake Oler&apos;, &apos;username&apos;: &apos;BlakeIsBlake&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32677&quot; title=&quot;Segmentation fault converting ReplicaSet to Replicated Shard Cluster&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32677&quot;&gt;&lt;del&gt;SERVER-32677&lt;/del&gt;&lt;/a&gt; Fix segmentation fault when converting a replica set to a replicated sharded cluster&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/cad0d35091f98b5c2bb37765861841844bd9e16d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/cad0d35091f98b5c2bb37765861841844bd9e16d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1783520" author="kaloian.manassiev" created="Wed, 24 Jan 2018 16:05:32 +0000"  >&lt;p&gt;The problem happens when the logical session cache happens to run before the sharding initialization has completed. I think the fix should be to add a check that &lt;tt&gt;ShardingState::get(opCtx)-&amp;gt;enabled()&lt;/tt&gt; before attempting to reference the catalog cache &lt;a href=&quot;https://github.com/mongodb/mongo/blob/fec49f5e76d3b55a191c141974fdcf1aea7cdc96/src/mongo/db/sessions_collection_sharded.cpp#L58&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;As part of this fix we should see if there are other places which may be accessing sharding infrastructure, which is initialized late.&lt;/p&gt;</comment>
                            <comment id="1773303" author="mark.agarunov" created="Fri, 12 Jan 2018 20:59:33 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=gdecicco&quot; class=&quot;user-hover&quot; rel=&quot;gdecicco&quot;&gt;gdecicco&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the report. I&apos;ve set the fixVersion to &quot;Needs Triage&quot; for this new feature to be scheduled against our currently planned work. Updates will be posted on this ticket as they happen.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                            <comment id="1772585" author="gdecicco" created="Fri, 12 Jan 2018 11:52:15 +0000"  >&lt;p&gt;I cannot edit the description, there is a typo:&lt;br/&gt;
&quot;Once you restart the node with the flag --&lt;del&gt;replSet&lt;/del&gt; &amp;#45;-shardsvr&quot;&lt;/p&gt;</comment>
                            <comment id="1772584" author="gdecicco" created="Fri, 12 Jan 2018 11:49:45 +0000"  >&lt;p&gt;Addendum: if the flag --shardsvr is removed the replicaset stop receiving SIGSEGV&lt;/p&gt;</comment>
                    </comments>
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                    <name>Related</name>
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            <issuekey id="2175529">SERVER-71106</issuekey>
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                                                                <inwardlinks description="is related to">
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                            <attachment id="175350" name="arbitrer.conf" size="336" author="gdecicco" created="Fri, 12 Jan 2018 11:24:32 +0000"/>
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                            <customfieldvalue>&lt;p&gt;start 2 data node with: (config attached)&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;$ mongod --config /data/mongod.conf --replSet rs&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;start the arbiter with:&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;$ mongod --config /data/arbitrer.conf --replSet rs&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;connect to one data node and run the replicaset init&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;   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;&amp;gt; rs.initiate({ _id: &quot;rs&quot;, members: [{ _id: 1, host: &quot;mongo_replica1:27017&quot; }, { _id: 2, host: &quot;mongo_replica2:27017&quot; }], settings: { getLastErrorDefaults: { w: &quot;majority&quot;, wtimeout: 30000 }}})&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;connecting to replicaset &quot;rs/mongo_replica1:27017,mongo_replica2:27017&quot; to add arbitrer&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;   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;&amp;gt; rs.addArb(&quot;mongo_arbitrer:27017&quot;)&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;now following &lt;a href=&quot;https://docs.mongodb.com/manual/tutorial/convert-replica-set-to-replicated-shard-cluster/#restart-the-replica-set-as-a-shard&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/tutorial/convert-replica-set-to-replicated-shard-cluster/#restart-the-replica-set-as-a-shard&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;stop secondary and run &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;$ mongod --config /data/mongod.conf --shardsvr --replSet rs&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;stop arbitrer and run&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;$ mongod --config /data/arbitrer.conf --shardsvr --replSet rs&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;connect to primary and stepDown&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;   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;&amp;gt; rs.stepDown()&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;restart old Primary with&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;   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;$ mongod --config /data/mongod.conf --shardsvr --replSet rs&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;everything reconnect. After some minutes (around 5. it&apos;s cyclic) in idle one data node receive SIGSEGV and on cascade also the other data node (but not the arbitrer) receive the same SIGSEGV.&lt;/p&gt;</customfieldvalue>

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