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Posted to solr-user@lucene.apache.org by matthew sporleder <ms...@gmail.com> on 2011/01/27 21:30:54 UTC

disappearing MBeans

I am using JMX to monitor my replication status and am finding that my
MBeans are disappearing.  I turned on debugging for JMX and found that
solr seems to be deleting the mbeans.

Is this a bug?  Some trace info is below..

here's me reading the mbean successfully:
Jan 27, 2011 5:00:02 PM ServerCommunicatorAdmin reqIncoming
FINER: Receive a new request.
Jan 27, 2011 5:00:02 PM DefaultMBeanServerInterceptor getAttribute
FINER: Attribute= indexReplicatedAt, obj=
solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:00:02 PM Repository retrieve
FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:00:02 PM ServerCommunicatorAdmin reqIncoming
FINER: Finish a request.


a little while later it removes the mbean from the PM Repository
(whatever that is) and then re-adds it:
FINER: Send create notification of object
solr/myapp-core:id=org.apache.solr.handler.component.SearchHandler,type=atlas
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
FINER: JMX.mbean.registered
solr/myapp-core:type=atlas,id=org.apache.solr.handler.component.SearchHandler
Jan 27, 2011 5:16:14 PM Repository contains
FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM Repository retrieve
FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM Repository remove
FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor unregisterMBean
FINER: Send delete notification of object
solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=/replication
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
FINER: JMX.mbean.unregistered
solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor registerMBean
FINER: ObjectName =
solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM Repository addMBean
FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor addObject
FINER: Send create notification of object
solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=/replication
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
FINER: JMX.mbean.registered
solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler


And after a tons of messages but still in the same second it does:
Jan 27, 2011 5:16:14 PM Repository contains
FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM Repository retrieve
FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM Repository removeFINER:
name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor unregisterMBean
FINER: Send delete notification of object
solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
FINER: JMX.mbean.unregistered
solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor registerMBean
FINER: ObjectName =
solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandlerJan
27, 2011 5:16:14 PM Repository addMBean
FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor addObjectFINER:
Send create notification of object
solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor
sendNotificationFINER: JMX.mbean.registered
solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler


And then I don't know what this is about but it removes the bean again:
Jan 27, 2011 5:16:15 PM Repository contains
FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:15 PM Repository retrieve
FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:15 PM Repository remove
FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:16:15 PM DefaultMBeanServerInterceptor unregisterMBean
FINER: Send delete notification of object
solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=org.apache.solr.hand
ler.ReplicationHandler
Jan 27, 2011 5:16:15 PM DefaultMBeanServerInterceptor sendNotification
FINER: JMX.mbean.unregistered
solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.Replicat
ionHandler


But eventually I come in to read and find nothing:
Jan 27, 2011 5:20:01 PM ServerCommunicatorAdmin reqIncoming
FINER: Receive a new request.
Jan 27, 2011 5:20:01 PM DefaultMBeanServerInterceptor getAttribute
FINER: Attribute= indexReplicatedAt, obj=
solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:20:01 PM Repository retrieve
FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
Jan 27, 2011 5:20:01 PM DefaultMBeanServerInterceptor getMBean
FINER: solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler:
Found no object


Thanks,
Matt

Re: disappearing MBeans

Posted by matthew sporleder <ms...@gmail.com>.

Sorry to reply to myself, but I just wanted to see if anyone saw
this/had ideas why MBeans would be removed/re-added/removed.

I tried looking for this in the code but was unable to grok what
triggers bean removal.

Any hints?


On Thu, Jan 27, 2011 at 3:30 PM, matthew sporleder <ms...@gmail.com> wrote:
> I am using JMX to monitor my replication status and am finding that my
> MBeans are disappearing.  I turned on debugging for JMX and found that
> solr seems to be deleting the mbeans.
>
> Is this a bug?  Some trace info is below..
>
> here's me reading the mbean successfully:
> Jan 27, 2011 5:00:02 PM ServerCommunicatorAdmin reqIncoming
> FINER: Receive a new request.
> Jan 27, 2011 5:00:02 PM DefaultMBeanServerInterceptor getAttribute
> FINER: Attribute= indexReplicatedAt, obj=
> solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:00:02 PM Repository retrieve
> FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:00:02 PM ServerCommunicatorAdmin reqIncoming
> FINER: Finish a request.
>
>
> a little while later it removes the mbean from the PM Repository
> (whatever that is) and then re-adds it:
> FINER: Send create notification of object
> solr/myapp-core:id=org.apache.solr.handler.component.SearchHandler,type=atlas
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
> FINER: JMX.mbean.registered
> solr/myapp-core:type=atlas,id=org.apache.solr.handler.component.SearchHandler
> Jan 27, 2011 5:16:14 PM Repository contains
> FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM Repository retrieve
> FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM Repository remove
> FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor unregisterMBean
> FINER: Send delete notification of object
> solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=/replication
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
> FINER: JMX.mbean.unregistered
> solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor registerMBean
> FINER: ObjectName =
> solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM Repository addMBean
> FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor addObject
> FINER: Send create notification of object
> solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=/replication
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
> FINER: JMX.mbean.registered
> solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
>
>
> And after a tons of messages but still in the same second it does:
> Jan 27, 2011 5:16:14 PM Repository contains
> FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM Repository retrieve
> FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM Repository removeFINER:
> name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor unregisterMBean
> FINER: Send delete notification of object
> solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor sendNotification
> FINER: JMX.mbean.unregistered
> solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor registerMBean
> FINER: ObjectName =
> solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandlerJan
> 27, 2011 5:16:14 PM Repository addMBean
> FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor addObjectFINER:
> Send create notification of object
> solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:14 PM DefaultMBeanServerInterceptor
> sendNotificationFINER: JMX.mbean.registered
> solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
>
>
> And then I don't know what this is about but it removes the bean again:
> Jan 27, 2011 5:16:15 PM Repository contains
> FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:15 PM Repository retrieve
> FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:15 PM Repository remove
> FINER: name=solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:16:15 PM DefaultMBeanServerInterceptor unregisterMBean
> FINER: Send delete notification of object
> solr/myapp-core:id=org.apache.solr.handler.ReplicationHandler,type=org.apache.solr.hand
> ler.ReplicationHandler
> Jan 27, 2011 5:16:15 PM DefaultMBeanServerInterceptor sendNotification
> FINER: JMX.mbean.unregistered
> solr/myapp-core:type=org.apache.solr.handler.ReplicationHandler,id=org.apache.solr.handler.Replicat
> ionHandler
>
>
> But eventually I come in to read and find nothing:
> Jan 27, 2011 5:20:01 PM ServerCommunicatorAdmin reqIncoming
> FINER: Receive a new request.
> Jan 27, 2011 5:20:01 PM DefaultMBeanServerInterceptor getAttribute
> FINER: Attribute= indexReplicatedAt, obj=
> solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:20:01 PM Repository retrieve
> FINER: name=solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler
> Jan 27, 2011 5:20:01 PM DefaultMBeanServerInterceptor getMBean
> FINER: solr/myapp-core:type=/replication,id=org.apache.solr.handler.ReplicationHandler:
> Found no object
>