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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-6557] when running 2 or more MapReduce in parallel mongo crash</title>
                <link>https://jira.mongodb.org/browse/SERVER-6557</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn5&amp;#93;&lt;/span&gt; CMD: drop hoursDatabase.tmp.mr.minuteid_instanceid_90&lt;br/&gt;
Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn5&amp;#93;&lt;/span&gt; CMD: drop hoursDatabase.tmp.mr.minuteid_instanceid_90&lt;br/&gt;
Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn5&amp;#93;&lt;/span&gt; CMD: drop hoursDatabase.tmp.mr.minuteid_instanceid_90_inc&lt;br/&gt;
Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn6&amp;#93;&lt;/span&gt; build index minutesDatabase.tmp.mr.secondid_instanceid_status_91_inc &lt;/p&gt;
{ 0: 1 }
&lt;p&gt; Sun Jul 22 13:04:32 Invalid access at address: 0xc0 from thread: conn5&lt;/p&gt;

&lt;p&gt;Sun Jul 22 13:04:32 Got signal: 11 (Segmentation fault).&lt;/p&gt;

&lt;p&gt;Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn6&amp;#93;&lt;/span&gt; build index done.  scanned 0 total records. 0 secs Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn6&amp;#93;&lt;/span&gt; CMD: drop minutesDatabase.tmp.mr.secondid_instanceid_status_91&lt;br/&gt;
Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn6&amp;#93;&lt;/span&gt; build index minutesDatabase.tmp.mr.secondid_instanceid_status_91 &lt;/p&gt;
{ _id: 1 }
&lt;p&gt; Sun Jul 22 13:04:32 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn6&amp;#93;&lt;/span&gt; build index done.  scanned 0 total records. 0 secs Sun Jul 22 13:04:32 Backtrace:&lt;br/&gt;
0x6236d1 0x5516b9 0x551c42 0x35c8e0e4c0 0xbb2d15 0xbaa638 0xbafefb 0x5b7600 0x7780f1 0x77923d 0x77a1cc 0x757be8 0x75b3f1 0x67284d 0x673b92 0x56a392 0xabe091 0x35c8e06367 0x35c82d2f7d&lt;br/&gt;
 ./mongod(_ZN5mongo15printStackTraceERSo+0x21) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x6236d1&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo10abruptQuitEi+0x399) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x5516b9&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo24abruptQuitWithAddrSignalEiP7siginfoPv+0x262) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x551c42&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /lib64/libpthread.so.0 &lt;span class=&quot;error&quot;&gt;&amp;#91;0x35c8e0e4c0&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(&lt;em&gt;ZNSt8_Rb_treeIN5mongo8ByLocKeyESt4pairIKS1_PNS0_12ClientCursorEESt10_Select1stIS6_ESt4lessIS1_ESaIS6_EE5eraseERS3&lt;/em&gt;+0x15) &lt;span class=&quot;error&quot;&gt;&amp;#91;0xbb2d15&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo12ClientCursor17setLastLoc_inlockENS_7DiskLocE+0x138) &lt;span class=&quot;error&quot;&gt;&amp;#91;0xbaa638&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo12ClientCursorD1Ev+0x4b) &lt;span class=&quot;error&quot;&gt;&amp;#91;0xbafefb&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo2mr16MapReduceCommand3runERKSsRNS_7BSONObjEiRSsRNS_14BSONObjBuilderEb+0xbd0) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x5b7600&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo12_execCommandEPNS_7CommandERKSsRNS_7BSONObjEiRNS_14BSONObjBuilderEb+0x51) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x7780f1&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo11execCommandEPNS_7CommandERNS_6ClientEiPKcRNS_7BSONObjERNS_14BSONObjBuilderEb+0xd0d) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x77923d&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo12_runCommandsEPKcRNS_7BSONObjERNS_11_BufBuilderINS_16TrivialAllocatorEEERNS_14BSONObjBuilderEbi+0x2ac) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x77a1cc&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo11runCommandsEPKcRNS_7BSONObjERNS_5CurOpERNS_11_BufBuilderINS_16TrivialAllocatorEEERNS_14BSONObjBuilderEbi+0x38) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x757be8&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(&lt;em&gt;ZN5mongo8runQueryERNS_7MessageERNS_12QueryMessageERNS_5CurOpES1&lt;/em&gt;+0xbc1) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x75b3f1&amp;#93;&lt;/span&gt;  ./mongod &lt;span class=&quot;error&quot;&gt;&amp;#91;0x67284d&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo16assembleResponseERNS_7MessageERNS_10DbResponseERKNS_11HostAndPortE+0x3a2) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x673b92&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo16MyMessageHandler7processERNS_7MessageEPNS_21AbstractMessagingPortEPNS_9LastErrorE+0x82) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x56a392&amp;#93;&lt;/span&gt;&lt;br/&gt;
 ./mongod(_ZN5mongo3pms9threadRunEPNS_13MessagingPortE+0x411) &lt;span class=&quot;error&quot;&gt;&amp;#91;0xabe091&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /lib64/libpthread.so.0 &lt;span class=&quot;error&quot;&gt;&amp;#91;0x35c8e06367&amp;#93;&lt;/span&gt;&lt;br/&gt;
 /lib64/libc.so.6(clone+0x6d) &lt;span class=&quot;error&quot;&gt;&amp;#91;0x35c82d2f7d&amp;#93;&lt;/span&gt;&lt;/p&gt;</description>
                <environment>linux RH 5.5</environment>
        <key id="45084">SERVER-6557</key>
            <summary>when running 2 or more MapReduce in parallel mongo crash</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="5">Cannot Reproduce</resolution>
                                        <assignee username="siddharth.singh@10gen.com">siddharth.singh@10gen.com</assignee>
                                    <reporter username="igreenfi">izek greenfield</reporter>
                        <labels>
                    </labels>
                <created>Mon, 23 Jul 2012 10:23:09 +0000</created>
                <updated>Tue, 31 Jul 2012 19:49:55 +0000</updated>
                            <resolved>Tue, 31 Jul 2012 19:49:55 +0000</resolved>
                                    <version>2.2.0-rc0</version>
                                                    <component>Concurrency</component>
                    <component>MapReduce</component>
                                        <votes>2</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="149170" author="ian@10gen.com" created="Tue, 31 Jul 2012 19:49:55 +0000"  >&lt;p&gt;@izek, I&apos;m closing this ticket for now, but please reopen with detailed steps to reproduce if you can.&lt;/p&gt;</comment>
                            <comment id="147320" author="siddharth.singh@10gen.com" created="Wed, 25 Jul 2012 20:07:31 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;  I tried running mapreduce in parallel but could not repro the crash. Can you please post the steps to reproduce this.&lt;/p&gt;

&lt;p&gt;Thanks.&lt;/p&gt;</comment>
                            <comment id="146452" author="igreenfi" created="Tue, 24 Jul 2012 05:58:37 +0000"  >&lt;p&gt;sample doc:&lt;br/&gt;
{&lt;br/&gt;
  &quot;_id&quot; : ObjectId(&quot;500d1aa0c52b935b44ebf6ee&quot;),&lt;br/&gt;
  &quot;compInstallPath&quot; : &quot;/opt/orland/auditServer&quot;,&lt;br/&gt;
  &quot;compInstanceName&quot; : &quot;ppsInstance1&quot;,&lt;br/&gt;
  &quot;compName&quot; : &quot;pps&quot;,&lt;br/&gt;
  &quot;compVersion&quot; : &quot;1.0.0-1&quot;,&lt;br/&gt;
  &quot;flowContext&quot; : &quot;fx1234&quot;,&lt;br/&gt;
  &quot;name&quot; : &quot;kuku&quot;,&lt;br/&gt;
  &quot;elapsedTime&quot; : NumberLong(17),&lt;br/&gt;
  &quot;instanceId&quot; : NumberLong(-903099689),&lt;br/&gt;
  &quot;recordTime&quot; : ISODate(&quot;2012-07-23T09:34:24.418Z&quot;),&lt;br/&gt;
  &quot;day_id&quot; : ISODate(&quot;2012-07-22T21:00:00Z&quot;),&lt;br/&gt;
  &quot;hour_id&quot; : ISODate(&quot;2012-07-23T09:00:00Z&quot;),&lt;br/&gt;
  &quot;minute_id&quot; : ISODate(&quot;2012-07-23T09:34:00Z&quot;),&lt;br/&gt;
  &quot;second_id&quot; : ISODate(&quot;2012-07-23T09:34:24Z&quot;),&lt;br/&gt;
  &quot;distinctContentID&quot; : &quot;c1&quot;,&lt;br/&gt;
  &quot;status&quot; : 303,&lt;br/&gt;
  &quot;distinctContentInstanceID&quot; : &quot;c3&quot;,&lt;br/&gt;
  &quot;householdId&quot; : &quot;householdId-1&quot;,&lt;br/&gt;
  &quot;authorizationId&quot; : &quot;abcd-1&quot;,&lt;br/&gt;
  &quot;lastTime&quot; : &quot;2011-09-02T13:12:59Z&quot;,&lt;br/&gt;
  &quot;profile&quot; : &quot;abe&quot;&lt;br/&gt;
}&lt;/p&gt;

&lt;p&gt;commands:&lt;br/&gt;
{&lt;br/&gt;
&quot;mapreduce&quot; : &quot;raw_data&quot;,&lt;br/&gt;
&quot;out&quot; : &lt;/p&gt;
{ &quot;merge&quot; : &quot;secondid_instanceid_name_status&quot;, &quot;db&quot; : &quot;secondsDatabase&quot; }
&lt;p&gt;,&lt;br/&gt;
&quot;query&quot; : { &quot;second_id&quot; : &lt;/p&gt;
{ $gte: new Date(1343109120000) }
&lt;p&gt;, $and: [ { &quot;second_id&quot; : &lt;/p&gt;
{ $lt: new Date(1343109180000) }
&lt;p&gt; } ] },&lt;br/&gt;
&quot;map&quot; : &quot;function Map() { emit(&lt;/p&gt;
{time_id : this.second_id, instance_id : this.instanceId, name : this.name}
&lt;p&gt;, &lt;/p&gt;
{count: 1, elapsedTime: this.elapsedTime, status : this.status, failedCount: 1 , sucssesCount: 1}
&lt;p&gt;); }&quot;,&lt;br/&gt;
&quot;reduce&quot; : &quot;function Reduce(key, values) { var reduced = &lt;/p&gt;
{count:0, elapsedTime:0}
&lt;p&gt;; values.forEach(function(val) &lt;/p&gt;
{ reduced.elapsedTime += val.elapsedTime; reduced.count += val.count; }
&lt;p&gt; ); return reduced; }&quot;,&lt;br/&gt;
&quot;finalize&quot; : &quot;function Finalize(key, reduced) &lt;/p&gt;
{ reduced.avgElapsedTime = reduced.elapsedTime / reduced.count; return reduced;}
&lt;p&gt;&quot;,&lt;br/&gt;
&quot;sort&quot; : &lt;/p&gt;
{ &quot;second_id&quot; : 1 , &quot;instanceId&quot; : 1, &quot;name&quot; : 1 , &quot;status&quot; : 1}
&lt;p&gt; }&lt;/p&gt;

&lt;p&gt;on my env it happen each time i start it. it happen when i start with empty collection immediatly if the collection has data it takes more time.&lt;/p&gt;
</comment>
                            <comment id="146441" author="antoine" created="Tue, 24 Jul 2012 05:04:10 +0000"  >&lt;p&gt;is this reproducible always?&lt;br/&gt;
Could you give us a sample document and the exact command ran?&lt;br/&gt;
thanks&lt;/p&gt;</comment>
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