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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>[JAVA-1111] isLocked is incompatible with MongoDB 2.5.5</title>
                <link>https://jira.mongodb.org/browse/JAVA-1111</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;&lt;tt&gt;MongoClient&lt;/tt&gt; exposes a method `isLocked()` that checks if the given node is &lt;tt&gt;fsync&lt;/tt&gt; locked.&lt;/p&gt;

&lt;p&gt;On 2.5.5 via a mongoS, this operation fails with the following exception:&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;com.mongodb.MongoException: DBClientBase::findN: transport error: mms-db1:50000 ns: admin.$cmd.sys.inprog query: { $query: {} }&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;	at com.mongodb.QueryResultIterator.throwOnQueryFailure(QueryResultIterator.java:213)&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;	at com.mongodb.QueryResultIterator.init(QueryResultIterator.java:197)&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;	at com.mongodb.QueryResultIterator.initFromQueryResponse(QueryResultIterator.java:175)&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;	at com.mongodb.QueryResultIterator.&amp;lt;init&amp;gt;(QueryResultIterator.java:64)&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;	at com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:78)&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;	at com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:59)&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;	at com.mongodb.DBCollection.findOne(DBCollection.java:869)&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;	at com.mongodb.DBCollection.findOne(DBCollection.java:843)&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;	at com.mongodb.DBCollection.findOne(DBCollection.java:789)&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;	at com.mongodb.DBCollection.findOne(DBCollection.java:778)&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;	at com.mongodb.Mongo.isLocked(Mongo.java:734)&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;Note:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;The command was given to a mongoS listed in the URI mentioned in Environment above.&lt;/li&gt;
	&lt;li&gt;The mms-db1:50000 from the trace is the primary of the first shard.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;In the mms-db1:50000&apos;s mongod.log, the following message is logged:&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;[conn551] AssertionException handling request, closing client connection: 16810 bad query: BadValue unknown top level operator: $query&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;It appears to be dependent on going through the mongoS, but unclear if auth-enabled is a factor.&lt;/p&gt;</description>
                <environment>* Linux 64-bit community edition&lt;br/&gt;
* MongoDB 2.5.5 sharded cluster with CR authentication enabled on admin database of mongoS and admin database per shard.&lt;br/&gt;
* MongoClient connection made to multiple mongoSes via a URI:&lt;br/&gt;
&amp;quot;&lt;a href=&quot;mongodb://admin:&quot;&gt;mongodb://admin:&lt;/a&gt;&lt;a href=&apos;mailto:admin@mms-db1&apos;&gt;admin@mms-db1&lt;/a&gt;:60000,mms-db1:60001,mms-db2:60000,mms-db2:60001/&amp;quot;&lt;br/&gt;
* 2.12.0 snapshot build jar at:&lt;br/&gt;
&lt;a href=&quot;https://oss.sonatype.org/content/repositories/snapshots/org/mongodb/mongo-java-driver/2.12.0-SNAPSHOT/mongo-java-driver-2.12.0-20140210.145413-52.jar&quot;&gt;https://oss.sonatype.org/content/repositories/snapshots/org/mongodb/mongo-java-driver/2.12.0-SNAPSHOT/mongo-java-driver-2.12.0-20140210.145413-52.jar&lt;/a&gt;</environment>
        <key id="110996">JAVA-1111</key>
            <summary>isLocked is incompatible with MongoDB 2.5.5</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="-1">Unassigned</assignee>
                                    <reporter username="john.morales@mongodb.com">John Morales</reporter>
                        <labels>
                    </labels>
                <created>Thu, 13 Feb 2014 23:58:16 +0000</created>
                <updated>Fri, 14 Feb 2014 17:45:45 +0000</updated>
                            <resolved>Fri, 14 Feb 2014 12:27:04 +0000</resolved>
                                    <version>2.12.0</version>
                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="499422" author="john.morales@10gen.com" created="Fri, 14 Feb 2014 16:50:03 +0000"  >&lt;p&gt;Created: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12734&quot; title=&quot;CurrentOp (inprog) fails with wrapped query ($query: {})&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12734&quot;&gt;&lt;del&gt;SERVER-12734&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="499397" author="john.morales@10gen.com" created="Fri, 14 Feb 2014 16:39:10 +0000"  >&lt;p&gt;I see - I &lt;em&gt;think&lt;/em&gt; the intention on 2.4.9 was the fan out the check to shards rather than performing the fsync lock. The &lt;tt&gt;MongoClient.isLocked()&lt;/tt&gt; is only doing a check of fsync &quot;status&quot;.&lt;/p&gt;

&lt;p&gt;Will create a SERVER ticket.&lt;/p&gt;</comment>
                            <comment id="499331" author="jeff.yemin" created="Fri, 14 Feb 2014 15:25:30 +0000"  >&lt;p&gt;Is there a use case for calling isLocked on a mongos?  If you try to lock a mongos, you get:&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;mongos&amp;gt; db.fsyncLock()&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;{ &quot;ok&quot; : 0, &quot;errmsg&quot; : &quot;can&apos;t do lock through mongos&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;I think it would be best if all lock-related methods threw an exception unless the MongoClient represents a direct connection to a mongod.&lt;/p&gt;</comment>
                            <comment id="499130" author="john.morales@10gen.com" created="Fri, 14 Feb 2014 05:17:21 +0000"  >&lt;p&gt;No, sorry - now I see how that&apos;s confusing.&lt;/p&gt;

&lt;p&gt;I first discovered the issue using 2.11.2. I then only tried 2.12.0 snapshot as a sanity check for perhaps it was fixed in 2.12.0 which I know provides support for some MongoDB 2.5.5 changes. &lt;/p&gt;

&lt;p&gt;In conclusion, neither 2.11.2 nor 2.12.0 snapshot works against MongoDB 2.5.5. But (at least) 2.11.2 works with MongoDB 2.4.9 - didn&apos;t try 2.12.0 with server 2.4.9.&lt;/p&gt;</comment>
                            <comment id="499119" author="jeff.yemin" created="Fri, 14 Feb 2014 04:04:55 +0000"  >&lt;p&gt;Just to be clear, this works with 2.11.x?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                                        </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="111078">SERVER-12734</issuekey>
        </issuelink>
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                                    </issuelinktype>
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